firefly-linux-kernel-4.4.55.git
9 years agoipv6: gre: fix wrong skb->protocol in WCCP
Yuri Chislov [Mon, 24 Nov 2014 10:25:15 +0000 (11:25 +0100)]
ipv6: gre: fix wrong skb->protocol in WCCP

When using GRE redirection in WCCP, it sets the wrong skb->protocol,
that is, ETH_P_IP instead of ETH_P_IPV6 for the encapuslated traffic.

Fixes: c12b395a4664 ("gre: Support GRE over IPv6")
Cc: Dmitry Kozlov <xeb@mail.ru>
Signed-off-by: Yuri Chislov <yuri.chislov@gmail.com>
Tested-by: Yuri Chislov <yuri.chislov@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoscsi: add SPC-3 command definitions
Hannes Reinecke [Mon, 17 Nov 2014 13:25:20 +0000 (14:25 +0100)]
scsi: add SPC-3 command definitions

SPC-3 defines SERVICE ACTION IN(12), SERVICE_ACTION OUT(12),
SERVICE ACTION OUT(16), and SERVICE ACTION BIDIRECTIONAL.
And READ MEDIA SERIAL NUMBER has long since been deprecated.
So update callers to refer to the new cdb name.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Tested-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoscsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16
Hannes Reinecke [Mon, 17 Nov 2014 13:25:19 +0000 (14:25 +0100)]
scsi: rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16

SPC-3 defines SERVICE ACTION IN(12) and SERVICE ACTION IN(16).
So rename SERVICE_ACTION_IN to SERVICE_ACTION_IN_16 to be
consistent with SPC and to allow for better distinction.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Tested-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoscsi: remove scsi_driver owner field
Christoph Hellwig [Wed, 12 Nov 2014 17:34:51 +0000 (18:34 +0100)]
scsi: remove scsi_driver owner field

The driver core driver structure has grown an owner field and now
requires it to be set for all modular drivers.  Set it up for
all scsi_driver instances and get rid of the now superflous
scsi_driver owner field.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Shane M Seymour <shane.seymour@hp.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: move scsi_dispatch_cmd to scsi_lib.c
Christoph Hellwig [Sat, 6 Sep 2014 01:23:07 +0000 (18:23 -0700)]
scsi: move scsi_dispatch_cmd to scsi_lib.c

scsi_lib.c is where the rest of the I/O submission path lives, so move
scsi_dispatch_cmd there and mark it static.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: stop passing a gfp_mask argument down the command setup path
Christoph Hellwig [Sat, 6 Sep 2014 01:20:23 +0000 (18:20 -0700)]
scsi: stop passing a gfp_mask argument down the command setup path

There is no reason for ULDs to pass in a flag on how to allocate the S/G
lists.  While we don't need GFP_ATOMIC for the blk-mq case because we
don't hold locks, that decision can be made way down the chain without
having to pass a pointless gfp_mask argument.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: remove scsi_next_command
Christoph Hellwig [Sat, 6 Sep 2014 01:02:09 +0000 (18:02 -0700)]
scsi: remove scsi_next_command

There's only one caller left, so inline it and reduce the blk-mq vs !blk-mq
diff a litte bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: don't use scsi_next_command in scsi_reset_provider
Christoph Hellwig [Sat, 6 Sep 2014 01:00:05 +0000 (18:00 -0700)]
scsi: don't use scsi_next_command in scsi_reset_provider

scsi_reset_provider already manually runs all queues for the given host,
so it doesn't need the scsi_run_queues call from it, and it doesn't need
a reference on the device because it's synchronous.

So let's just call scsi_put_command directly and avoid the device reference
dance to simplify the code.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoMerge tag 'iwlwifi-for-john-2014-11-23' of git://git.kernel.org/pub/scm/linux/kernel...
John W. Linville [Mon, 24 Nov 2014 18:53:41 +0000 (13:53 -0500)]
Merge tag 'iwlwifi-for-john-2014-11-23' of git://git./linux/kernel/git/iwlwifi/iwlwifi-fixes

Emmanuel Grumbach <egrumbach@gmail.com> says:

"Not all the firmware know how to handle the HOT_SPOT_CMD.
Make sure that the firmware will know this command before
sending it. This avoids a firmware crash."

Signed-off-by: John W. Linville <linville@tuxdriver.com>
9 years agotmscsim: replace by am53c974 driver
Hannes Reinecke [Mon, 24 Nov 2014 14:37:30 +0000 (15:37 +0100)]
tmscsim: replace by am53c974 driver

The am53c974 is a re-implementation of the tmscsim driver,
and provides the same functionality.
So remove the tmscsim driver and make am53c974 an alias to tmscsim.

Acked-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: enable CONFIG2_FENAB for am53c974
Hannes Reinecke [Mon, 24 Nov 2014 14:37:29 +0000 (15:37 +0100)]
esp_scsi: enable CONFIG2_FENAB for am53c974

CONFIG2_FENAB ('feature enable') changed definition between chip
revisions, from 'Latch SCSI Phase' to 'Latch SCSI Phase, display
chip ID upon reset, and enable 24 bit addresses'.
So only enable it for am53c974 where we know what it's doing.

Acked-by: David S. Miller <davem@davemloft.net>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: let DMA driver provide a config2 value
Paolo Bonzini [Mon, 24 Nov 2014 14:37:28 +0000 (15:37 +0100)]
esp_scsi: let DMA driver provide a config2 value

On PCscsi, the FENAB configuration also enables 24-bit DMA
transfer lengths (and provides the chip id in TCHI after reset).
We want to be able to enable this parameter from the DMA driver.

Check if the caller of scsi_esp_register provided a value for esp->config2.
If this is the case, assume this is not an ESP100, skip the detection
phase and leave esp->config2 untouched.  It will be used in esp_reset_esp.

Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: correctly detect am53c974
Hannes Reinecke [Mon, 24 Nov 2014 14:37:27 +0000 (15:37 +0100)]
esp_scsi: correctly detect am53c974

The am53c974 returns the same ID as the FAS236, but implements
things slightly differently. So detect the am53c974 by checking
for ESP_CONFIG4 register.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoam53c974: BLAST residual handling
Hannes Reinecke [Mon, 24 Nov 2014 14:37:26 +0000 (15:37 +0100)]
am53c974: BLAST residual handling

The am53c974 has an design issue where a single byte might be
left in the SCSI FIFO after a DMA transfer.
As the handling code is currently untested add a WARN_ON()
statement here.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoam53c974: add new driver
Hannes Reinecke [Mon, 24 Nov 2014 14:37:25 +0000 (15:37 +0100)]
am53c974: add new driver

This patch adds a new implementation for the Tekram DC-390T /
AMD AM53c974 SCSI controller, based on the generic
esp_scsi infrastructure.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: use FIFO for command submission
Hannes Reinecke [Mon, 24 Nov 2014 14:37:24 +0000 (15:37 +0100)]
esp_scsi: use FIFO for command submission

Using DMA for command submission has the drawback that it might
generate additional DMA completion interrupts after the command
has been submitted to the device.
Additionally the am53c974 has a design flaw causing it
to generate spurious interrupts even though DMA completion
interrupts are not enabled.
This can be avoided by using the FIFO for command submission.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: read status registers
Hannes Reinecke [Mon, 24 Nov 2014 14:37:23 +0000 (15:37 +0100)]
esp_scsi: read status registers

A read to ESP_INTRPT will clear ESP_STATUS and ESP_SSTEP. So read
all status registers in one go to avoid losing information.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: debug event and command
Hannes Reinecke [Mon, 24 Nov 2014 14:37:22 +0000 (15:37 +0100)]
esp_scsi: debug event and command

Add new debug definitions for event and command logging.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: convert to dev_printk
Hannes Reinecke [Mon, 24 Nov 2014 14:37:21 +0000 (15:37 +0100)]
esp_scsi: convert to dev_printk

Use dev_printk functions for correct device annotations.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: make number of tags configurable
Hannes Reinecke [Mon, 24 Nov 2014 14:37:20 +0000 (15:37 +0100)]
esp_scsi: make number of tags configurable

Add a field 'num_tags' to the esp structure to allow drivers
to overwrite the number of avialable tags if required.
Default is ESP_DEFAULT_TAGS.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agoesp_scsi: spellcheck 'driver'
Hannes Reinecke [Mon, 24 Nov 2014 14:37:19 +0000 (15:37 +0100)]
esp_scsi: spellcheck 'driver'

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agovmw_pscsi: simplify ->change_queue_depth
Christoph Hellwig [Thu, 13 Nov 2014 14:14:43 +0000 (15:14 +0100)]
vmw_pscsi: simplify ->change_queue_depth

Remove overly verbose debugging output that pokes into mid-layer internal
structures that looks like copy & paste from the mpt2/3 drivers.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agompt3sas: simplify ->change_queue_depth
Christoph Hellwig [Thu, 13 Nov 2014 14:13:20 +0000 (15:13 +0100)]
mpt3sas: simplify ->change_queue_depth

Merge two functions, and remove overly verbose debugging output that pokes
into mid-layer internal structures.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agompt2sas: simplify ->change_queue_depth
Christoph Hellwig [Thu, 13 Nov 2014 14:11:59 +0000 (15:11 +0100)]
mpt2sas: simplify ->change_queue_depth

Merge two functions, and remove overly verbose debugging output that pokes
into mid-layer internal structures.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: drop reason argument from ->change_queue_depth
Christoph Hellwig [Thu, 13 Nov 2014 14:08:42 +0000 (15:08 +0100)]
scsi: drop reason argument from ->change_queue_depth

Drop the now unused reason argument from the ->change_queue_depth method.
Also add a return value to scsi_adjust_queue_depth, and rename it to
scsi_change_queue_depth now that it can be used as the default
->change_queue_depth implementation.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: don't allow setting of queue_depth bigger than can_queue
Christoph Hellwig [Thu, 13 Nov 2014 13:27:41 +0000 (14:27 +0100)]
scsi: don't allow setting of queue_depth bigger than can_queue

We won't ever queue more commands than the host allows.  Instead of
letting drivers either reject or ignore this case handle it in
common code.  Note that various driver use internal constant or
variables that are assigned to both shost->can_queue and checked
in ->change_queue_depth - I did remove those checks as well.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
9 years agoscsi: avoid ->change_queue_depth indirection for queue full tracking
Christoph Hellwig [Thu, 13 Nov 2014 13:25:11 +0000 (14:25 +0100)]
scsi: avoid ->change_queue_depth indirection for queue full tracking

All drivers use the implementation for ramping the queue up and down, so
instead of overloading the change_queue_depth method call the
implementation diretly if the driver opts into it by setting the
track_queue_depth flag in the host template.

Note that a few drivers validated the new queue depth in their
change_queue_depth method, but as we never go over the queue depth
set during slave_configure or the sysfs file this isn't nessecary
and can safely be removed.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Venkatesh Srinivas <venkateshs@google.com>
9 years agolpfc: remove queue_depth events
Christoph Hellwig [Thu, 13 Nov 2014 11:42:04 +0000 (12:42 +0100)]
lpfc: remove queue_depth events

James Smart said the userspace to consume these events never emerged.  Given
that these get in the way of the following patches remove support for them.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Acked-by: James Smart <james.smart@emulex.com>
9 years agomegaraid_sas: do not process IOCTLs and SCSI commands during driver removal
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:54:08 +0000 (15:24 +0530)]
megaraid_sas: do not process IOCTLs and SCSI commands during driver removal

Do not process any SCSI and IOCTL command further (return them with
appropriate return values to callers), while driver removal is in
progress or PCI shutdown is invoked.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agomegaraid_sas: dndinaness related bug fixes
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:54:28 +0000 (15:24 +0530)]
megaraid_sas: dndinaness related bug fixes

This patch addresses few endianness related bug fixes.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agomegaraid_sas: corrected return of wait_event from abort frame path
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:54:23 +0000 (15:24 +0530)]
megaraid_sas: corrected return of wait_event from abort frame path

Corrected wait_event() call which was waiting for wrong completion
status (0xFF).

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agomegaraid_sas: make HBA operational after LD_MAP_SYNC DCMD in OCR path
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:54:18 +0000 (15:24 +0530)]
megaraid_sas: make HBA operational after LD_MAP_SYNC DCMD in OCR path

In OCR(Online Controller Reset) path, driver sets adapter state to
MEGASAS_HBA_OPERATIONAL before getting new RAID map.  There will be a small
window where IO will come from OS with old RAID map. This patch will update
adapter state to MEGASAS_HBA_OPERATIONAL, only after driver has new RAID
map to avoid any IOs getting build using old RAID map.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agomegaraid_sas: online Firmware upgrade support for Extended VD feature
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:54:13 +0000 (15:24 +0530)]
megaraid_sas: online Firmware upgrade support for Extended VD feature

In OCR (Online Controller Reset) path, driver sets adapter state to
MEGASAS_HBA_OPERATIONAL before getting new RAID map.  There will be a small
window where IO will come from OS with old RAID map.  This patch will
update adapter state to MEGASAS_HBA_OPERATIONAL, only after driver has new
RAID map to avoid any IOs getting build using old RAID map.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Signed-off-by: Kashyap Desai <kashyap.desai@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agomegaraid_sas: update MAINTAINERS and copyright information for megaraid drivers
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:54:03 +0000 (15:24 +0530)]
megaraid_sas: update MAINTAINERS and copyright information for megaraid drivers

Update MAINTAINERS list and copyright information for megaraid_sas driver.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agomegaraid_sas: driver version upgrade and remove some meta data of driver
Sumit.Saxena@avagotech.com [Mon, 17 Nov 2014 09:53:58 +0000 (15:23 +0530)]
megaraid_sas: driver version upgrade and remove some meta data of driver

Update driver version and remove some meta data (release date and extended
version) about megaraid_sas driver.

Signed-off-by: Sumit Saxena <sumit.saxena@avagotech.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
9 years agodrm/i915: Ignore SURFLIVE and flip counter when the GPU gets reset
Ville Syrjälä [Tue, 27 May 2014 18:33:09 +0000 (21:33 +0300)]
drm/i915: Ignore SURFLIVE and flip counter when the GPU gets reset

During a GPU reset we need to get pending page flip cleared out
since the ring contents are gone and flip will never complete
on its own. This used to work until the mmio vs. CS flip race
detection came about. That piece of code is looking for a
specific surface address in the SURFLIVE register, but as
a flip to that address may never happen the check may never
pass. So we should just skip the SURFLIVE and flip counter
checks when the GPU gets reset.

intel_display_handle_reset() tries to effectively complete
the flip anyway by calling .update_primary_plane(). But that
may not satisfy the conditions of the mmio vs. CS race
detection since there's no guarantee that a modeset didn't
sneak in between the GPU reset and intel_display_handle_reset().
Such a modeset will not wait for pending flips due to the ongoing GPU
reset, and then the primary plane updates performed by
intel_display_handle_reset() will already use the new surface
address, and thus the surface address the flip is waiting for
might never appear in SURFLIVE. The result is that the flip
will never complete and attempts to perform further page flips
will fail with -EBUSY.

During the GPU reset intel_crtc_has_pending_flip() will return
false regardless, so the deadlock with a modeset vs. the error
work acquiring crtc->mutex was avoided. And the reset_counter
check in intel_crtc_has_pending_flip() actually made this bug
even less severe since it allowed normal modesets to go through
even though there's a pending flip.

This is a regression introduced by me here:
 commit 75f7f3ec600524c9544cc31695155f1a9ddbe1d9
 Author: Ville Syrjälä <ville.syrjala@linux.intel.com>
 Date:   Tue Apr 15 21:41:34 2014 +0300

    drm/i915: Fix mmio vs. CS flip race on ILK+

Testcase: igt/kms_flip/flip-vs-panning-vs-hang
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: stable@vger.kernel.org
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
9 years agoMIPS: Fix address type used for early memory detection.
Steven J. Hill [Thu, 13 Nov 2014 15:52:00 +0000 (09:52 -0600)]
MIPS: Fix address type used for early memory detection.

In 'early_parse_mem' the data type used for the start
and size of a memory region specified on the command line
is incorrect. If 64-bit addressing is used, the value
gets truncated.

Signed-off-by: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8456/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Kconfig: Don't allow both microMIPS and SmartMIPS to be selected.
Markos Chandras [Mon, 21 Jul 2014 07:46:14 +0000 (08:46 +0100)]
MIPS: Kconfig: Don't allow both microMIPS and SmartMIPS to be selected.

microMIPS and SmartMIPS can't be used together. This fixes the
following build problem:

Warning: the 32-bit microMIPS architecture does not support the `smartmips' extension
arch/mips/kernel/entry.S:90: Error: unrecognized opcode `mtlhx $24'
[...]
arch/mips/kernel/entry.S:109: Error: unrecognized opcode `mtlhx $24'

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7421/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: kernel: cps-vec: Set ISA level to mips32r2 for the MIPS MT ASE
Markos Chandras [Wed, 16 Jul 2014 07:53:39 +0000 (08:53 +0100)]
MIPS: kernel: cps-vec: Set ISA level to mips32r2 for the MIPS MT ASE

Fixes the following build warnings:
arch/mips/kernel/cps-vec.S: Assembler messages:
arch/mips/kernel/cps-vec.S:228: Warning: the `mt' extension requires
MIPS32 revision 2 or greater
[...]
arch/mips/kernel/cps-vec.S: Assembler messages:
arch/mips/kernel/cps-vec.S:345: Warning: the `mt' extension requires
MIPS32 revision 2 or greater

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: Paul Burton <Paul.Burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7355/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Netlogic: handle modular AHCI builds
Florian Fainelli [Wed, 24 Sep 2014 17:55:11 +0000 (10:55 -0700)]
MIPS: Netlogic: handle modular AHCI builds

Commits a951440971d0 ("MIPS: Netlogic: Support for XLP3XX on-chip SATA")
and fedfcb1137d2 ("MIPS: Netlogic: XLP9XX on-chip SATA support") added
ahci-init and ahci-init-xlp2 as objects to build when CONFIG_SATA_AHCI
is enabled.

If CONFIG_SATA_AHCI is made modular, these two files will also get built
as modules (obj-m), which will result in the following linking failure:

ERROR: "nlm_set_pic_extra_ack" [arch/mips/netlogic/xlp/ahci-init.ko]
undefined!
ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/ahci-init.ko] undefined!
ERROR: "nlm_nodes" [arch/mips/netlogic/xlp/ahci-init-xlp2.ko] undefined!
ERROR: "nlm_set_pic_extra_ack"
[arch/mips/netlogic/xlp/ahci-init-xlp2.ko] undefined!
ERROR: "xlp_socdev_to_node" [arch/mips/netlogic/xlp/ahci-init-xlp2.ko]
undefined!
ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/ahci-init-xlp2.ko]
undefined!

Just check whether CONFIG_SATA_AHCI is defined for this build, and if
that is the case, add these objects to the list of built-in object
files.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: ganesanr@broadcom.com
Cc: jchandra@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/7855/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Netlogic: handle modular USB case
Florian Fainelli [Wed, 24 Sep 2014 17:55:10 +0000 (10:55 -0700)]
MIPS: Netlogic: handle modular USB case

Commit 1004165f346a ("MIPS: Netlogic: USB support for XLP") and then
commit 9eac3591e78b ("MIPS: Netlogic: Add support for USB on XLP2xx")
added usb-init and usb-init-xlp2 as objects to build when CONFIG_USB is
enabled.

If CONFIG_USB is made modular, these two files will also get built as
modules (obj-m), which will result in the following linking failure:

ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/usb-init.ko] undefined!
ERROR: "nlm_nodes" [arch/mips/netlogic/xlp/usb-init-xlp2.ko] undefined!
ERROR: "nlm_set_pic_extra_ack" [arch/mips/netlogic/xlp/usb-init-xlp2.ko]
undefined!
ERROR: "xlp_socdev_to_node" [arch/mips/netlogic/xlp/usb-init-xlp2.ko]
undefined!
ERROR: "nlm_io_base" [arch/mips/netlogic/xlp/usb-init-xlp2.ko]
undefined!

Just check whether CONFIG_USB is defined for this build, and if that is
the case, add these objects to the list of built-in object files.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: ganesanr@broadcom.com
Cc: jchandra@broadcom.com
Patchwork: https://patchwork.linux-mips.org/patch/7854/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Loongson: Make platform serial setup always built-in.
Aaro Koskinen [Wed, 19 Nov 2014 23:05:38 +0000 (01:05 +0200)]
MIPS: Loongson: Make platform serial setup always built-in.

If SERIAL_8250 is compiled as a module, the platform specific setup
for Loongson will be a module too, and it will not work very well.
At least on Loongson 3 it will trigger a build failure,
since loongson_sysconf is not exported to modules.

Fix by making the platform specific serial code always built-in.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Reported-by: Ralf Baechle <ralf@linux-mips.org>
Cc: stable@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: Huacai Chen <chenhc@lemote.com>
Cc: Markos Chandras <Markos.Chandras@imgtec.com>
Patchwork: https://patchwork.linux-mips.org/patch/8533/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: fix EVA & non-SMP non-FPU FP context signal handling
Paul Burton [Tue, 28 Oct 2014 11:25:51 +0000 (11:25 +0000)]
MIPS: fix EVA & non-SMP non-FPU FP context signal handling

The save_fp_context & restore_fp_context pointers were being assigned
to the wrong variables if either:

  - The kernel is configured for UP & runs on a system without an FPU,
    since b2ead5282885 "MIPS: Move & rename
    fpu_emulator_{save,restore}_context".

  - The kernel is configured for EVA, since ca750649e08c "MIPS: kernel:
    signal: Prevent save/restore FPU context in user memory".

This would lead to FP context being clobbered incorrectly when setting
up a sigcontext, then the garbage values being saved uselessly when
returning from the signal.

Fix by swapping the pointer assignments appropriately.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: stable@vger.kernel.org # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8230/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: cpu-probe: Set the FTLB probability bit on supported cores
Markos Chandras [Mon, 10 Nov 2014 12:25:34 +0000 (12:25 +0000)]
MIPS: cpu-probe: Set the FTLB probability bit on supported cores

Make use of the Config6/FLTBP bit to set the probability of a TLBWR
instruction to hit the FTLB or the VTLB. A value of 0 (which may be
the default value on certain cores, such as proAptiv or P5600)
means that a TLBWR instruction will never hit the VTLB which
leads to performance limitations since it effectively decreases
the number of available TLB slots.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Reviewed-by: James Hogan <james.hogan@imgtec.com>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8368/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: BMIPS: Fix ".previous without corresponding .section" warnings
Kevin Cernekee [Tue, 21 Oct 2014 04:27:51 +0000 (21:27 -0700)]
MIPS: BMIPS: Fix ".previous without corresponding .section" warnings

Commit 078a55fc824c1 ("Delete __cpuinit/__CPUINIT usage from MIPS code")
removed our __CPUINIT directives, so now the ".previous" directives
are superfluous.  Remove them.

Signed-off-by: Kevin Cernekee <cernekee@gmail.com>
Cc: f.fainelli@gmail.com
Cc: mbizon@freebox.fr
Cc: jogo@openwrt.org
Cc: jfraser@broadcom.com
Cc: linux-mips@linux-mips.org
Cc: devicetree@vger.kernel.org
Patchwork: https://patchwork.linux-mips.org/patch/8156/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: uaccess.h: Fix strnlen_user comment.
Ralf Baechle [Tue, 4 Nov 2014 01:23:45 +0000 (02:23 +0100)]
MIPS: uaccess.h: Fix strnlen_user comment.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: r4kcache: Add EVA case for protected_writeback_dcache_line
Markos Chandras [Wed, 5 Nov 2014 08:25:37 +0000 (08:25 +0000)]
MIPS: r4kcache: Add EVA case for protected_writeback_dcache_line

Commit de8974e3f76c0 ("MIPS: asm: r4kcache: Add EVA cache flushing
functions") added cache function for EVA using the cachee instruction.
However, it didn't add a case for the protected_writeback_dcache_line.
mips_dsemul() calls r4k_flush_cache_sigtramp() which in turn uses
the protected_writeback_dcache_line() to flush the trampoline code
back to memory. This used the wrong "cache" instruction leading to
random userland crashes on non-FPU cores.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: <stable@vger.kernel.org> # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8331/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: Fix info about plat_setup in arch_mem_init comment
Rafał Miłecki [Wed, 3 Sep 2014 05:36:51 +0000 (07:36 +0200)]
MIPS: Fix info about plat_setup in arch_mem_init comment

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7607/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: rtlx: Remove KERN_DEBUG from pr_debug() arguments in rtlx.c
Masanari Iida [Tue, 7 Oct 2014 03:57:45 +0000 (12:57 +0900)]
MIPS: rtlx: Remove KERN_DEBUG from pr_debug() arguments in rtlx.c

Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7938/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agoMIPS: SEAD3: Fix LED device registration.
Ralf Baechle [Thu, 23 Oct 2014 22:41:45 +0000 (00:41 +0200)]
MIPS: SEAD3: Fix LED device registration.

This isn't a module and shouldn't be one.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Cc: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/8202/

9 years agoMIPS: Fix a copy & paste error in unistd.h
Huacai Chen [Wed, 12 Nov 2014 05:47:14 +0000 (13:47 +0800)]
MIPS: Fix a copy & paste error in unistd.h

Commit 5df4c8dbbc (MIPS: Wire up bpf syscall.) break the N32 build
because of a copy & paste error.

Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: John Crispin <john@phrozen.org>
Cc: Steven J. Hill <Steven.Hill@imgtec.com>
Cc: linux-mips@linux-mips.org
Cc: Fuxin Zhang <zhangfx@lemote.com>
Cc: Zhangjin Wu <wuzhangjin@gmail.com>
Patchwork: https://patchwork.linux-mips.org/patch/8390/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
9 years agopowerpc/pci: Remove unused force_32bit_msi quirk
Benjamin Herrenschmidt [Tue, 7 Oct 2014 05:13:34 +0000 (16:13 +1100)]
powerpc/pci: Remove unused force_32bit_msi quirk

This is now fully replaced with the generic "no_64bit_msi" one
that is set by the respective drivers directly.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
9 years agopowerpc/pseries: Honor the generic "no_64bit_msi" flag
Benjamin Herrenschmidt [Tue, 7 Oct 2014 05:12:55 +0000 (16:12 +1100)]
powerpc/pseries: Honor the generic "no_64bit_msi" flag

Instead of the arch specific quirk which we are deprecating

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
9 years agopowerpc/powernv: Honor the generic "no_64bit_msi" flag
Benjamin Herrenschmidt [Tue, 7 Oct 2014 05:12:36 +0000 (16:12 +1100)]
powerpc/powernv: Honor the generic "no_64bit_msi" flag

Instead of the arch specific quirk which we are deprecating
and that drivers don't understand.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
9 years agosound/radeon: Move 64-bit MSI quirk from arch to driver
Benjamin Herrenschmidt [Mon, 24 Nov 2014 03:17:08 +0000 (14:17 +1100)]
sound/radeon: Move 64-bit MSI quirk from arch to driver

A number of radeon cards have a HW limitation causing them to be
unable to generate the full 64-bit of address bits for MSIs. This
breaks MSIs on some platforms such as POWER machines.

We used to have a powerpc specific quirk to address that on a
single card, but this doesn't scale very well, this is better
put under control of the drivers who know precisely what a given
HW revision can do.

We now have a generic quirk in the PCI code. We should set it
appropriately for all radeon's from the audio driver.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: <stable@vger.kernel.org>
9 years agogpu/radeon: Set flag to indicate broken 64-bit MSI
Benjamin Herrenschmidt [Fri, 3 Oct 2014 05:18:59 +0000 (15:18 +1000)]
gpu/radeon: Set flag to indicate broken 64-bit MSI

Some radeon ASICs don't support all 64 address bits of MSIs despite
advertising support for 64-bit MSIs in their configuration space.

This breaks on systems such as IBM POWER7/8, where 64-bit MSIs can
be assigned with some of the high address bits set.

This makes use of the newly introduced "no_64bit_msi" flag in structure
pci_dev to allow the MSI allocation code to fallback to 32-bit MSIs
on those adapters.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
CC: <stable@vger.kernel.org>
---

Adding Alex's review tag. Patch to the driver is identical to the
reviewed one, I dropped the arch/powerpc hunk rewrote the subject
and cset comment.

9 years agoPCI/MSI: Add device flag indicating that 64-bit MSIs don't work
Benjamin Herrenschmidt [Fri, 3 Oct 2014 05:13:24 +0000 (15:13 +1000)]
PCI/MSI: Add device flag indicating that 64-bit MSIs don't work

This can be set by quirks/drivers to be used by the architecture code
that assigns the MSI addresses.

We additionally add verification in the core MSI code that the values
assigned by the architecture do satisfy the limitation in order to fail
gracefully if they don't (ie. the arch hasn't been updated to deal with
that quirk yet).

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
9 years agoALSA: hda - Limit 40bit DMA for AMD HDMI controllers
Takashi Iwai [Wed, 1 Oct 2014 08:30:53 +0000 (10:30 +0200)]
ALSA: hda - Limit 40bit DMA for AMD HDMI controllers

AMD/ATI HDMI controller chip models, we already have a filter to lower
to 32bit DMA, but the rest are supposed to be working with 64bit
although the hardware doesn't really work with 63bit but only with 40
or 48bit DMA.  In this patch, we take 40bit DMA for safety for the
AMD/ATI controllers as the graphics drivers does.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
CC: <stable@vger.kernel.org>
9 years agoip_tunnel: the lack of vti_link_ops' dellink() cause kernel panic
lucien [Sun, 23 Nov 2014 07:04:11 +0000 (15:04 +0800)]
ip_tunnel: the lack of vti_link_ops' dellink() cause kernel panic

Now the vti_link_ops do not point the .dellink, for fb tunnel device
(ip_vti0), the net_device will be removed as the default .dellink is
unregister_netdevice_queue,but the tunnel still in the tunnel list,
then if we add a new vti tunnel, in ip_tunnel_find():

        hlist_for_each_entry_rcu(t, head, hash_node) {
                if (local == t->parms.iph.saddr &&
                    remote == t->parms.iph.daddr &&
                    link == t->parms.link &&
==>                 type == t->dev->type &&
                    ip_tunnel_key_match(&t->parms, flags, key))
                        break;
        }

the panic will happen, cause dev of ip_tunnel *t is null:
[ 3835.072977] IP: [<ffffffffa04103fd>] ip_tunnel_find+0x9d/0xc0 [ip_tunnel]
[ 3835.073008] PGD b2c21067 PUD b7277067 PMD 0
[ 3835.073008] Oops: 0000 [#1] SMP
.....
[ 3835.073008] Stack:
[ 3835.073008]  ffff8800b72d77f0 ffffffffa0411924 ffff8800bb956000 ffff8800b72d78e0
[ 3835.073008]  ffff8800b72d78a0 0000000000000000 ffffffffa040d100 ffff8800b72d7858
[ 3835.073008]  ffffffffa040b2e3 0000000000000000 0000000000000000 0000000000000000
[ 3835.073008] Call Trace:
[ 3835.073008]  [<ffffffffa0411924>] ip_tunnel_newlink+0x64/0x160 [ip_tunnel]
[ 3835.073008]  [<ffffffffa040b2e3>] vti_newlink+0x43/0x70 [ip_vti]
[ 3835.073008]  [<ffffffff8150d4da>] rtnl_newlink+0x4fa/0x5f0
[ 3835.073008]  [<ffffffff812f68bb>] ? nla_strlcpy+0x5b/0x70
[ 3835.073008]  [<ffffffff81508fb0>] ? rtnl_link_ops_get+0x40/0x60
[ 3835.073008]  [<ffffffff8150d11f>] ? rtnl_newlink+0x13f/0x5f0
[ 3835.073008]  [<ffffffff81509cf4>] rtnetlink_rcv_msg+0xa4/0x270
[ 3835.073008]  [<ffffffff8126adf5>] ? sock_has_perm+0x75/0x90
[ 3835.073008]  [<ffffffff81509c50>] ? rtnetlink_rcv+0x30/0x30
[ 3835.073008]  [<ffffffff81529e39>] netlink_rcv_skb+0xa9/0xc0
[ 3835.073008]  [<ffffffff81509c48>] rtnetlink_rcv+0x28/0x30
....

modprobe ip_vti
ip link del ip_vti0 type vti
ip link add ip_vti0 type vti
rmmod ip_vti

do that one or more times, kernel will panic.

fix it by assigning ip_tunnel_dellink to vti_link_ops' dellink, in
which we skip the unregister of fb tunnel device. do the same on ip6_vti.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: Cong Wang <cwang@twopensource.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoLinux 3.18-rc6
Linus Torvalds [Sun, 23 Nov 2014 23:25:20 +0000 (15:25 -0800)]
Linux 3.18-rc6

9 years agouprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME
Andy Lutomirski [Fri, 21 Nov 2014 21:26:07 +0000 (13:26 -0800)]
uprobes, x86: Fix _TIF_UPROBE vs _TIF_NOTIFY_RESUME

x86 call do_notify_resume on paranoid returns if TIF_UPROBE is set but
not on non-paranoid returns.  I suspect that this is a mistake and that
the code only works because int3 is paranoid.

Setting _TIF_NOTIFY_RESUME in the uprobe code was probably a workaround
for the x86 bug.  With that bug fixed, we can remove _TIF_NOTIFY_RESUME
from the uprobes code.

Reported-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agosched: Provide update_curr callbacks for stop/idle scheduling classes
Thomas Gleixner [Sun, 23 Nov 2014 22:04:52 +0000 (23:04 +0100)]
sched: Provide update_curr callbacks for stop/idle scheduling classes

Chris bisected a NULL pointer deference in task_sched_runtime() to
commit 6e998916dfe3 'sched/cputime: Fix clock_nanosleep()/clock_gettime()
inconsistency'.

Chris observed crashes in atop or other /proc walking programs when he
started fork bombs on his machine.  He assumed that this is a new exit
race, but that does not make any sense when looking at that commit.

What's interesting is that, the commit provides update_curr callbacks
for all scheduling classes except stop_task and idle_task.

While nothing can ever hit that via the clock_nanosleep() and
clock_gettime() interfaces, which have been the target of the commit in
question, the author obviously forgot that there are other code paths
which invoke task_sched_runtime()

do_task_stat(()
 thread_group_cputime_adjusted()
   thread_group_cputime()
     task_cputime()
       task_sched_runtime()
        if (task_current(rq, p) && task_on_rq_queued(p)) {
          update_rq_clock(rq);
          up->sched_class->update_curr(rq);
        }

If the stats are read for a stomp machine task, aka 'migration/N' and
that task is current on its cpu, this will happily call the NULL pointer
of stop_task->update_curr.  Ooops.

Chris observation that this happens faster when he runs the fork bomb
makes sense as the fork bomb will kick migration threads more often so
the probability to hit the issue will increase.

Add the missing update_curr callbacks to the scheduler classes stop_task
and idle_task.  While idle tasks cannot be monitored via /proc we have
other means to hit the idle case.

Fixes: 6e998916dfe3 'sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency'
Reported-by: Chris Mason <clm@fb.com>
Reported-and-tested-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Stanislaw Gruszka <sgruszka@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoMerge branch 'x86-traps' (trap handling from Andy Lutomirski)
Linus Torvalds [Sun, 23 Nov 2014 21:56:55 +0000 (13:56 -0800)]
Merge branch 'x86-traps' (trap handling from Andy Lutomirski)

Merge x86-64 iret fixes from Andy Lutomirski:
 "This addresses the following issues:

   - an unrecoverable double-fault triggerable with modify_ldt.
   - invalid stack usage in espfix64 failed IRET recovery from IST
     context.
   - invalid stack usage in non-espfix64 failed IRET recovery from IST
     context.

  It also makes a good but IMO scary change: non-espfix64 failed IRET
  will now report the correct error.  Hopefully nothing depended on the
  old incorrect behavior, but maybe Wine will get confused in some
  obscure corner case"

* emailed patches from Andy Lutomirski <luto@amacapital.net>:
  x86_64, traps: Rework bad_iret
  x86_64, traps: Stop using IST for #SS
  x86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C

9 years agox86_64, traps: Rework bad_iret
Andy Lutomirski [Sun, 23 Nov 2014 02:00:33 +0000 (18:00 -0800)]
x86_64, traps: Rework bad_iret

It's possible for iretq to userspace to fail.  This can happen because
of a bad CS, SS, or RIP.

Historically, we've handled it by fixing up an exception from iretq to
land at bad_iret, which pretends that the failed iret frame was really
the hardware part of #GP(0) from userspace.  To make this work, there's
an extra fixup to fudge the gs base into a usable state.

This is suboptimal because it loses the original exception.  It's also
buggy because there's no guarantee that we were on the kernel stack to
begin with.  For example, if the failing iret happened on return from an
NMI, then we'll end up executing general_protection on the NMI stack.
This is bad for several reasons, the most immediate of which is that
general_protection, as a non-paranoid idtentry, will try to deliver
signals and/or schedule from the wrong stack.

This patch throws out bad_iret entirely.  As a replacement, it augments
the existing swapgs fudge into a full-blown iret fixup, mostly written
in C.  It's should be clearer and more correct.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agox86_64, traps: Stop using IST for #SS
Andy Lutomirski [Sun, 23 Nov 2014 02:00:32 +0000 (18:00 -0800)]
x86_64, traps: Stop using IST for #SS

On a 32-bit kernel, this has no effect, since there are no IST stacks.

On a 64-bit kernel, #SS can only happen in user code, on a failed iret
to user space, a canonical violation on access via RSP or RBP, or a
genuine stack segment violation in 32-bit kernel code.  The first two
cases don't need IST, and the latter two cases are unlikely fatal bugs,
and promoting them to double faults would be fine.

This fixes a bug in which the espfix64 code mishandles a stack segment
violation.

This saves 4k of memory per CPU and a tiny bit of code.

Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agox86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C
Andy Lutomirski [Sun, 23 Nov 2014 02:00:31 +0000 (18:00 -0800)]
x86_64, traps: Fix the espfix64 #DF fixup and rewrite it in C

There's nothing special enough about the espfix64 double fault fixup to
justify writing it in assembly.  Move it to C.

This also fixes a bug: if the double fault came from an IST stack, the
old asm code would return to a partially uninitialized stack frame.

Fixes: 3891a04aafd668686239349ea58f3314ea2af86b
Signed-off-by: Andy Lutomirski <luto@amacapital.net>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
9 years agoiwlwifi: mvm: check TLV flag before trying to use hotspot firmware commands
Luciano Coelho [Tue, 21 Oct 2014 13:12:18 +0000 (16:12 +0300)]
iwlwifi: mvm: check TLV flag before trying to use hotspot firmware commands

Older firmwares do not provide support for the HOT_SPOT_CMD command.
Check for the appropriate TLV flag that declares hotspot support in
the firmware to prevent a firmware assertion failure that can be
triggered from the userspace,

Cc: stable@vger.kernel.org [3.17+]
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
9 years agoMerge tag 'armsoc-for-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sun, 23 Nov 2014 19:46:01 +0000 (11:46 -0800)]
Merge tag 'armsoc-for-rc6' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A collection of fixes this week:

   - A set of clock fixes for shmobile platforms
   - A fix for tegra that moves serial port labels to be per board.
     We're choosing to merge this for 3.18 because the labels will start
     being parsed in 3.19, and without this change serial port numbers
     that used to be stable since the dawn of time will change numbers.
   - A few other DT tweaks for Tegra.
   - A fix for multi_v7_defconfig that makes it stop spewing cpufreq
     errors on Arndale (Exynos)"

* tag 'armsoc-for-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: multi_v7_defconfig: fix failure setting CPU voltage by enabling dependent I2C controller
  ARM: tegra: roth: Fix SD card VDD_IO regulator
  ARM: tegra: Remove eMMC vmmc property for roth/tn7
  ARM: dts: tegra: move serial aliases to per-board
  ARM: tegra: Add serial port labels to Tegra124 DT
  ARM: shmobile: kzm9g legacy: Set i2c clks_per_count to 2
  ARM: shmobile: r8a7740 dtsi: Correct IIC0 parent clock
  ARM: shmobile: r8a7790: Fix SD3CKCR address to device tree
  ARM: shmobile: r8a7740 legacy: Correct IIC0 parent clock
  ARM: shmobile: r8a7740 legacy: Add missing INTCA clock for irqpin module
  ARM: shmobile: r8a7790: Fix SD3CKCR address
  ARM: dts: sun6i: Re-parent ahb1_mux to pll6 as required by dma controller

9 years agoMerge branch 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj...
Linus Torvalds [Sun, 23 Nov 2014 19:33:49 +0000 (11:33 -0800)]
Merge branch 'for-3.18-fixes' of git://git./linux/kernel/git/tj/percpu

Pull percpu fix from Tejun Heo:
 "This contains one patch to fix a race condition which can lead to
  percpu_ref using a percpu pointer which is corrupted with a set DEAD
  bit.  The bug was introduced while separating out the ATOMIC mode flag
  from the DEAD flag.  The fix is pretty straight forward.

  I just committed the patch to the percpu tree but am sending out the
  pull request early as I'll be on vacation for a week.  The patch
  should be fairly safe and while the latency will be higher I'll be
  checking emails"

* 'for-3.18-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
  percpu-ref: fix DEAD flag contamination of percpu pointer

9 years agosolos-pci: fix error return code
Julia Lawall [Sat, 22 Nov 2014 14:39:17 +0000 (15:39 +0100)]
solos-pci: fix error return code

Return a negative error code on failure.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier ret; expression e1,e2;
@@
(
if (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoigb: Fixes needed for surprise removal support
Carolyn Wyborny [Sat, 22 Nov 2014 07:52:54 +0000 (23:52 -0800)]
igb: Fixes needed for surprise removal support

This patch adds some checks in order to prevent panic's on surprise
removal of devices during S0, S3, S4.  Without this patch, Thunderbolt
type device removal will panic the system.

Signed-off-by: Yanir Lubetkin <yanirx.lubetkin@intel.com>
Signed-off-by: Carolyn Wyborny <carolyn.wyborny@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoixgbe: fix use after free adapter->state test in ixgbe_remove/ixgbe_probe
Daniel Borkmann [Sat, 22 Nov 2014 07:52:53 +0000 (23:52 -0800)]
ixgbe: fix use after free adapter->state test in ixgbe_remove/ixgbe_probe

While working on a different issue, I noticed an annoying use
after free bug on my machine when unloading the ixgbe driver:

[ 8642.318797] ixgbe 0000:02:00.1: removed PHC on p2p2
[ 8642.742716] ixgbe 0000:02:00.1: complete
[ 8642.743784] BUG: unable to handle kernel paging request at ffff8807d3740a90
[ 8642.744828] IP: [<ffffffffa01c77dc>] ixgbe_remove+0xfc/0x1b0 [ixgbe]
[ 8642.745886] PGD 20c6067 PUD 81c1f6067 PMD 81c15a067 PTE 80000007d3740060
[ 8642.746956] Oops: 0002 [#1] SMP DEBUG_PAGEALLOC
[ 8642.748039] Modules linked in: [...]
[ 8642.752929] CPU: 1 PID: 1225 Comm: rmmod Not tainted 3.18.0-rc2+ #49
[ 8642.754203] Hardware name: Supermicro X10SLM-F/X10SLM-F, BIOS 1.1b 11/01/2013
[ 8642.755505] task: ffff8807e34d3fe0 ti: ffff8807b7204000 task.ti: ffff8807b7204000
[ 8642.756831] RIP: 0010:[<ffffffffa01c77dc>]  [<ffffffffa01c77dc>] ixgbe_remove+0xfc/0x1b0 [ixgbe]
[...]
[ 8642.774335] Stack:
[ 8642.775805]  ffff8807ee824098 ffff8807ee824098 ffffffffa01f3000 ffff8807ee824000
[ 8642.777326]  ffff8807b7207e18 ffffffff8137720f ffff8807ee824098 ffff8807ee824098
[ 8642.778848]  ffffffffa01f3068 ffff8807ee8240f8 ffff8807b7207e38 ffffffff8144180f
[ 8642.780365] Call Trace:
[ 8642.781869]  [<ffffffff8137720f>] pci_device_remove+0x3f/0xc0
[ 8642.783395]  [<ffffffff8144180f>] __device_release_driver+0x7f/0xf0
[ 8642.784876]  [<ffffffff814421f8>] driver_detach+0xb8/0xc0
[ 8642.786352]  [<ffffffff814414a9>] bus_remove_driver+0x59/0xe0
[ 8642.787783]  [<ffffffff814429d0>] driver_unregister+0x30/0x70
[ 8642.789202]  [<ffffffff81375c65>] pci_unregister_driver+0x25/0xa0
[ 8642.790657]  [<ffffffffa01eb38e>] ixgbe_exit_module+0x1c/0xc8e [ixgbe]
[ 8642.792064]  [<ffffffff810f93a2>] SyS_delete_module+0x132/0x1c0
[ 8642.793450]  [<ffffffff81012c61>] ? do_notify_resume+0x61/0xa0
[ 8642.794837]  [<ffffffff816d2029>] system_call_fastpath+0x12/0x17

The issue is that test_and_set_bit() done on adapter->state is being
performed *after* the netdevice has been freed via free_netdev().

When netdev is being allocated on initialization time, it allocates
a private area, here struct ixgbe_adapter, that resides after the
net_device structure. In ixgbe_probe(), the device init routine,
we set up the adapter after alloc_etherdev_mq() on the private area
and add a reference for the pci_dev as well via pci_set_drvdata().

Both in the error path of ixgbe_probe(), but also on module unload
when ixgbe_remove() is being called, commit 41c62843eb6a ("ixgbe:
Fix rcu warnings induced by LER") accesses adapter after free_netdev().
The patch stores the result in a bool and thus fixes above oops on my
side.

Fixes: 41c62843eb6a ("ixgbe: Fix rcu warnings induced by LER")
Cc: stable <stable@vger.kernel.org>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoixgbe: Correctly disable VLAN filter in promiscuous mode
Vlad Yasevich [Sat, 22 Nov 2014 07:52:52 +0000 (23:52 -0800)]
ixgbe: Correctly disable VLAN filter in promiscuous mode

IXGBE adapter seems to require that VLAN filtering be enabled if
VMDQ or SRIOV are enabled.  When those functions are disabled,
VLAN filtering may be disabled in promiscuous mode.

Prior to commit a9b8943ee129 ("ixgbe: remove vlan_filter_disable
and enable functions")

The logic was correct.  However, after the commit the logic
got reversed and VLAN filtered in now turned on when VMDQ/SRIOV
is disabled.

This patch changes the condition to enable hw vlan filtered
when VMDQ or SRIOV is enabled.

Fixes: a9b8943ee129 ("ixgbe: remove vlan_filter_disable and enable functions")
Cc: stable <stable@vger.kernel.org>
CC: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Acked-by: Emil Tantilov <emil.s.tantilov@intel.com>
Tested-by: Phil Schmitt <phillip.j.schmitt@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoipv6: Do not treat a GSO_TCPV4 request from UDP tunnel over IPv6 as invalid
Alexander Duyck [Sat, 22 Nov 2014 03:37:09 +0000 (19:37 -0800)]
ipv6: Do not treat a GSO_TCPV4 request from UDP tunnel over IPv6 as invalid

This patch adds SKB_GSO_TCPV4 to the list of supported GSO types handled by
the IPv6 GSO offloads.  Without this change VXLAN tunnels running over IPv6
do not currently handle IPv4 TCP TSO requests correctly and end up handing
the non-segmented frame off to the device.

Below is the before and after for a simple netperf TCP_STREAM test between
two endpoints tunneling IPv4 over a VXLAN tunnel running on IPv6 on top of
a 1Gb/s network adapter.

Recv   Send    Send
Socket Socket  Message  Elapsed
Size   Size    Size     Time     Throughput
bytes  bytes   bytes    secs.    10^6bits/sec

 87380  16384  16384    10.29       0.88      Before
 87380  16384  16384    10.03     895.69      After

Signed-off-by: Alexander Duyck <alexander.h.duyck@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux...
Linus Torvalds [Sun, 23 Nov 2014 19:16:36 +0000 (11:16 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs

Pull btrfs deadlock fix from Chris Mason:
 "This has a fix for a long standing deadlock that we've been trying to
  nail down for a while.  It ended up being a bad interaction with the
  fair reader/writer locks and the order btrfs reacquires locks in the
  btree"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
  btrfs: fix lockups from btrfs_clear_path_blocking

9 years agopercpu-ref: fix DEAD flag contamination of percpu pointer
Tejun Heo [Sat, 22 Nov 2014 14:22:42 +0000 (09:22 -0500)]
percpu-ref: fix DEAD flag contamination of percpu pointer

While decoupling ATOMIC and DEAD flags, f47ad4578461 ("percpu_ref:
decouple switching to percpu mode and reinit") updated
__ref_is_percpu() so that it only tests ATOMIC flag to determine
whether the ref is in percpu mode or not; however, while DEAD implies
ATOMIC, the two flags are set separately during percpu_ref_kill() and
if __ref_is_percpu() races percpu_ref_kill(), it may see DEAD w/o
ATOMIC.  Because __ref_is_percpu() returns @ref->percpu_count_ptr
value verbatim as the percpu pointer after testing ATOMIC, the pointer
may now be contaminated with the DEAD flag.

This can be fixed by clearing the flag bits before returning the
pointer which was the fix proposed by Shaohua; however, as DEAD
implies ATOMIC, we can just test for both flags at once and avoid the
explicit masking.

Update __ref_is_percpu() so that it tests that both ATOMIC and DEAD
are clear before returning @ref->percpu_count_ptr as the percpu
pointer.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-Reviewed-by: Shaohua Li <shli@kernel.org>
Link: http://lkml.kernel.org/r/995deb699f5b873c45d667df4add3b06f73c2c25.1416638887.git.shli@kernel.org
Fixes: f47ad4578461 ("percpu_ref: decouple switching to percpu mode and reinit")
9 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 22 Nov 2014 22:33:11 +0000 (14:33 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull timer fix from Thomas Gleixner:
 "A single bugfix for an init order problem in the sun4i subarch
  clockevents code"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clockevent: sun4i: Fix race condition in the probe code

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 22 Nov 2014 22:15:27 +0000 (14:15 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs

Pull vfs fixes from Al Viro:
 "Assorted fixes, most in overlayfs land"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  ovl: ovl_dir_fsync() cleanup
  ovl: update MAINTAINERS
  ovl: pass dentry into ovl_dir_read_merged()
  ovl: use lockless_dereference() for upperdentry
  ovl: allow filenames with comma
  ovl: fix race in private xattr checks
  ovl: fix remove/copy-up race
  ovl: rename filesystem type to "overlay"
  isofs: avoid unused function warning
  vfs: fix reference leak in d_prune_aliases()

9 years agousb: xhci: rework root port wake bits if controller isn't allowed to wakeup
Lu Baolu [Tue, 18 Nov 2014 09:27:14 +0000 (11:27 +0200)]
usb: xhci: rework root port wake bits if controller isn't allowed to wakeup

When system is being suspended, if host device is not allowed to do wakeup,
xhci_suspend() needs to clear all root port wake on bits. Otherwise, some
platforms may generate spurious wakeup, even if PCI PME# is disabled.

The initial commit ff8cbf250b44 ("xhci: clear root port wake on bits"),
which also got into stable, turned out to not work correctly and had to
be reverted, and is now rewritten.

Cc: stable <stable@vger.kernel.org> # v3.2+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Suggested-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
[Mathias Nyman: reword commit message]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: xhci: Reset a halted endpoint immediately when we encounter a stall.
Mathias Nyman [Tue, 18 Nov 2014 09:27:12 +0000 (11:27 +0200)]
USB: xhci: Reset a halted endpoint immediately when we encounter a stall.

If a device is halted and reuturns a STALL, then the halted endpoint
needs to be cleared both on the host and device side. The host
side halt is cleared by issueing a xhci reset endpoint command. The device side
is cleared with a ClearFeature(ENDPOINT_HALT) request, which should
be issued by the device driver if a URB reruen -EPIPE.

Previously we cleared the host side halt after the device side was cleared.
To make sure the host side halt is cleared in time we want to issue the
reset endpoint command immedialtely when a STALL status is encountered.

Otherwise we end up not following the specs and not returning -EPIPE
several times in a row when trying to transfer data to a halted endpoint.

Fixes: bcef3fd (USB: xhci: Handle errors that cause endpoint halts.)
Cc: <stable@vger.kernel.org> # v2.6.33+
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoRevert "xhci: clear root port wake on bits if controller isn't wake-up capable"
Lu Baolu [Tue, 18 Nov 2014 09:27:13 +0000 (11:27 +0200)]
Revert "xhci: clear root port wake on bits if controller isn't wake-up capable"

commit ff8cbf250b44 ("xhci: clear root port wake on bits if controller isn't")
can cause device detection error if runtime PM is enabled, and S3 wake
is disabled. Revert it.
https://bugzilla.kernel.org/show_bug.cgi?id=85701

This commit got into stable and should be reverted from there as well.

Cc: stable <stable@vger.kernel.org> # v3.2+
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reported-by: Dmitry Nezhevenko <dion@inhex.net>
[Mathias Nyman: reword commit message]
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: xhci: don't start a halted endpoint before its new dequeue is set
Mathias Nyman [Tue, 18 Nov 2014 09:27:11 +0000 (11:27 +0200)]
USB: xhci: don't start a halted endpoint before its new dequeue is set

A halted endpoint ring must first be reset, then move the ring
dequeue pointer past the problematic TRB. If we start the ring too
early after reset, but before moving the dequeue pointer we
will end up executing the same problematic TRB again.

As we always issue a set transfer dequeue command after a reset
endpoint command we can skip starting endpoint rings at reset endpoint
command completion.

Without this fix we end up trying to handle the same faulty TD for
contol endpoints. causing timeout, and failing testusb ctrl_out write
tests.

Fixes: e9df17e (USB: xhci: Correct assumptions about number of rings per endpoint.)
Cc: <stable@vger.kernel.org> #v2.6.35
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoUSB: uas: Add no-uas quirk for Hitachi usb-3 enclosures 4971:1012
Hans de Goede [Fri, 21 Nov 2014 12:28:03 +0000 (13:28 +0100)]
USB: uas: Add no-uas quirk for Hitachi usb-3 enclosures 4971:1012

These disks have a broken uas implementation, the tag field of the status
iu-s is not set properly, so we need to fall-back to usb-storage for these.

Cc: stable@vger.kernel.org # 3.16
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
9 years agoMerge tag 'usb-serial-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git...
Greg Kroah-Hartman [Sat, 22 Nov 2014 15:29:38 +0000 (07:29 -0800)]
Merge tag 'usb-serial-3.18-rc6' of git://git./linux/kernel/git/johan/usb-serial into usb-linus

Johan writes:

USB-serial fixes for v3.18-rc6

Three fixes for bugs related to TTY error reporting, which can to lead
to data being dropped by the line discipline.

Included is also some new device ids for ftdi_sio and cp210x.

Signed-off-by: Johan Hovold <johan@kernel.org>
9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Sat, 22 Nov 2014 01:20:36 +0000 (17:20 -0800)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix BUG when decrypting empty packets in mac80211, from Ronald Wahl.

 2) nf_nat_range is not fully initialized and this is copied back to
    userspace, from Daniel Borkmann.

 3) Fix read past end of b uffer in netfilter ipset, also from Dan
    Carpenter.

 4) Signed integer overflow in ipv4 address mask creation helper
    inet_make_mask(), from Vincent BENAYOUN.

 5) VXLAN, be2net, mlx4_en, and qlcnic need ->ndo_gso_check() methods to
    properly describe the device's capabilities, from Joe Stringer.

 6) Fix memory leaks and checksum miscalculations in openvswitch, from
    Pravin B SHelar and Jesse Gross.

 7) FIB rules passes back ambiguous error code for unreachable routes,
    making behavior confusing for userspace.  Fix from Panu Matilainen.

 8) ieee802154fake_probe() doesn't release resources properly on error,
    from Alexey Khoroshilov.

 9) Fix skb_over_panic in add_grhead(), from Daniel Borkmann.

10) Fix access of stale slave pointers in bonding code, from Nikolay
    Aleksandrov.

11) Fix stack info leak in PPP pptp code, from Mathias Krause.

12) Cure locking bug in IPX stack, from Jiri Bohac.

13) Revert SKB fclone memory freeing optimization that is racey and can
    allow accesses to freed up memory, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (71 commits)
  tcp: Restore RFC5961-compliant behavior for SYN packets
  net: Revert "net: avoid one atomic operation in skb_clone()"
  virtio-net: validate features during probe
  cxgb4 : Fix DCB priority groups being returned in wrong order
  ipx: fix locking regression in ipx_sendmsg and ipx_recvmsg
  openvswitch: Don't validate IPv6 label masks.
  pptp: fix stack info leak in pptp_getname()
  brcmfmac: don't include linux/unaligned/access_ok.h
  cxgb4i : Don't block unload/cxgb4 unload when remote closes TCP connection
  ipv6: delete protocol and unregister rtnetlink when cleanup
  net/mlx4_en: Add VXLAN ndo calls to the PF net device ops too
  bonding: fix curr_active_slave/carrier with loadbalance arp monitoring
  mac80211: minstrel_ht: fix a crash in rate sorting
  vxlan: Inline vxlan_gso_check().
  can: m_can: update to support CAN FD features
  can: m_can: fix incorrect error messages
  can: m_can: add missing delay after setting CCCR_INIT bit
  can: m_can: fix not set can_dlc for remote frame
  can: m_can: fix possible sleep in napi poll
  can: m_can: add missing message RAM initialization
  ...

9 years agoMerge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Sat, 22 Nov 2014 01:15:28 +0000 (17:15 -0800)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Just two radeon and two intel fixes: endian and regression fixes"

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/radeon: fix endian swapping in vbios fetch for tdp table
  drm/radeon: disable native backlight control on pre-r6xx asics (v2)
  drm/i915: Kick fbdev before vgacon
  drm/i915: drop WaSetupGtModeTdRowDispatch:snb

9 years agoMerge tag 'sound-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Sat, 22 Nov 2014 01:11:56 +0000 (17:11 -0800)]
Merge tag 'sound-3.18-rc6' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This batch ended up as a relatively high volume due to pending ASoC
  fixes.  But most of fixes there are trivial and/or device- specific
  fixes and quirks, so safe to apply.  The only (ASoC) core fixes are
  the DPCM race fix and the machine-driver matching fix for
  componentization"

* tag 'sound-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - fix the mic mute led problem for Latitude E5550
  ALSA: hda - move DELL_WMI_MIC_MUTE_LED to the tail in the quirk chain
  ASoC: wm_adsp: Avoid attempt to free buffers that might still be in use
  ALSA: usb-audio: Set the Control Selector to SU_SELECTOR_CONTROL for UAC2
  ALSA: usb-audio: Add ctrl message delay quirk for Marantz/Denon devices
  ASoC: sgtl5000: Fix SMALL_POP bit definition
  ASoC: cs42l51: re-hook of_match_table pointer
  ASoC: rt5670: change dapm routes of PLL connection
  ASoC: rt5670: correct the incorrect default values
  ASoC: samsung: Add MODULE_DEVICE_TABLE for Snow
  ASoC: max98090: Correct pclk divisor settings
  ASoC: dpcm: Fix race between FE/BE updates and trigger
  ASoC: Fix snd_soc_find_dai() matching component by name
  ASoC: rsnd: remove unsupported PAUSE flag
  ASoC: fsi: remove unsupported PAUSE flag
  ASoC: rt5645: Mark RT5645_TDM_CTRL_3 as readable
  ASoC: rockchip-i2s: fix infinite loop in rockchip_snd_rxctrl
  ASoC: es8328-i2c: Fix i2c_device_id name field in es8328_id
  ASoC: fsl_asrc: Add reg_defaults for regmap to fix kernel dump

9 years agoMerge tag 'pm+acpi-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael...
Linus Torvalds [Sat, 22 Nov 2014 00:56:25 +0000 (16:56 -0800)]
Merge tag 'pm+acpi-3.18-rc6' of git://git./linux/kernel/git/rafael/linux-pm

Pull ACPI power management fix from Rafael Wysocki:
 "This is just a one-liner fixing a regression introduced in 3.13 that
  broke system suspend on some Chromebooks.

  On those machines there are ACPI device objects for some I2C devices
  that can wake up the system from sleep states, but that is done via a
  platform-specific mechanism and the ACPI objects don't contain any
  wakeup-related information.  When we started to use ACPI power
  management with those devices (which happened during the 3.13 cycle),
  their configuration confused the ACPI PM layer that returned error
  codes from suspend callbacks for them causing system suspend to fail.

  However, the ACPI PM layer can safely ignore the wakeup setting from a
  device driver if the ACPI object corresponding to the device in
  question doesn't contain wakeup information in which case the driver
  itself is responsible for setting up the device for system wakeup"

* tag 'pm+acpi-3.18-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  ACPI / PM: Ignore wakeup setting if the ACPI companion can't wake up

9 years agoMerge tag 'devicetree-fixes-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sat, 22 Nov 2014 00:40:41 +0000 (16:40 -0800)]
Merge tag 'devicetree-fixes-for-3.18' of git://git./linux/kernel/git/robh/linux

Pull devicetree fixes from Rob Herring:
 "DeviceTree fixes for 3.18:

   - two fixes for OF selftest code
   - fix for PowerPC address parsing to disable work-around except on
     old PowerMACs
   - fix a crash when earlycon is enabled, but no device is found
   - DT documentation fixes and missing vendor prefixes

  All but the doc updates are also for stable"

* tag 'devicetree-fixes-for-3.18' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
  of/selftest: Fix testing when /aliases is missing
  of/selftest: Fix off-by-one error in removal path
  documentation: pinctrl bindings: Fix trivial typo 'abitrary'
  devicetree: bindings: Add vendor prefix for Micron Technology, Inc.
  of: Add vendor prefix for Chips&Media, Inc.
  of/base: Fix PowerPC address parsing hack
  devicetree: vendor-prefixes.txt: fix whitespace
  of: Fix crash if an earlycon driver is not found
  of/irq: Drop obsolete 'interrupts' vs 'interrupts-extended' text
  of: Spelling s/stucture/structure/
  devicetree: bindings: add sandisk to the vendor prefixes

9 years agoMerge tag 'pci-v3.18-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Sat, 22 Nov 2014 00:36:42 +0000 (16:36 -0800)]
Merge tag 'pci-v3.18-fixes-3' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:
 "These are fixes for an issue with 64-bit PCI bus addresses on 32-bit
  PAE kernels, an APM X-Gene problem (it depended on a generic change we
  removed before merging), a fix for my hotplug device configuration
  changes, and a devicetree documentation update.

  Resource management:
    - Support 64-bit bridge windows if we have 64-bit dma_addr_t (Yinghai Lu)

  PCI device hotplug:
    - Apply _HPX Link Control settings to all devices with a link (Yinghai Lu)

  Generic host bridge driver:
    - Add DT binding for "linux,pci-domain" property (Lucas Stach)

  APM X-Gene:
    - Assign resources to bus before adding new devices (Duc Dang)"

* tag 'pci-v3.18-fixes-3' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI: Support 64-bit bridge windows if we have 64-bit dma_addr_t
  PCI: Apply _HPX Link Control settings to all devices with a link
  PCI: Add missing DT binding for "linux,pci-domain" property
  PCI: xgene: Assign resources to bus before adding new devices

9 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
Linus Torvalds [Sat, 22 Nov 2014 00:28:45 +0000 (16:28 -0800)]
Merge git://git./linux/kernel/git/nab/target-pending

Pull SCSI target fixes from Nicholas Bellinger:
 "Here are the target-pending fixes queued for v3.18-rc6.

  The highlights include:

   - target-core OOPs fix with tcm_qla2xxx + vxworks FC initiators +
     zero length SCSI commands having a transfer direction set.  (Roland
     + Craig Watson)

   - vhost-scsi OOPs fix to explicitly prevent WWPN endpoint configfs
     group removal while qemu still has an active reference.  (Paolo +
     nab)

   - ib_srpt fix for RDMA hardware with lower srp_sq_size limits.
     (Bart)

   - two ib_isert work-arounds for running on ocrdma hardware (Or + Sagi
     + Chris)

   - iscsi-target discovery portal typo + SPC-3 PR Preempt SA key
     matching fix (Steve)"

* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
  IB/isert: Adjust CQ size to HW limits
  target: return CONFLICT only when SA key unmatched
  iser-target: Handle DEVICE_REMOVAL event on network portal listener correctly
  ib_isert: Add max_send_sge=2 minimum for control PDU responses
  srp-target: Retry when QP creation fails with ENOMEM
  iscsi-target: return the correct port in SendTargets
  vhost-scsi: Take configfs group dependency during VHOST_SCSI_SET_ENDPOINT
  target: Don't call TFO->write_pending if data_length == 0

9 years agoMerge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma
Linus Torvalds [Sat, 22 Nov 2014 00:24:27 +0000 (16:24 -0800)]
Merge branch 'fixes' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine fixes from Vinod Koul:
 "We have couple of fixes for dmaengine queued up:
   - dma mempcy fix for dma configuration of sun6i by Maxime
   - pl330 fixes: First the fixing allocation for data buffers by Liviu
     and then Jon's fixe for fifo width and usage"

* 'fixes' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: Fix allocation size for PL330 data buffer depth.
  dmaengine: pl330: Limit MFIFO usage for memcpy to avoid exhausting entries
  dmaengine: pl330: Align DMA memcpy operations to MFIFO width
  dmaengine: sun6i: Fix memcpy operation

9 years agoMerge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Linus Torvalds [Sat, 22 Nov 2014 00:14:58 +0000 (16:14 -0800)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus

Pull MIPS fixes from Ralf Baechle:
 "More 3.18 fixes for MIPS:

   - backtraces were not quite working on on 64-bit kernels
   - loongson needs a different cache coherency setting
   - Loongson 3 is a MIPS64 R2 version but due to erratum we treat is an
     older architecture revision.
   - fix build errors due to undefined references to __node_distances
     for certain configurations.
   - fix instruction decodig in the jump label code.
   - for certain configurations copy_{from,to}_user destroy the content
     of $3 so that register needs to be marked as clobbed by the calling
     code.
   - Hardware Table Walker fixes.
   - fill the delay slot of the last instruction of memcpy otherwise
     whatever ends up there randomly might have undesirable effects.
   - ensure get_user/__get_user always zero the variable to be read even
     in case of an error"

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
  MIPS: jump_label.c: Handle the microMIPS J instruction encoding
  MIPS: jump_label.c: Correct the span of the J instruction
  MIPS: Zero variable read by get_user / __get_user in case of an error.
  MIPS: lib: memcpy: Restore NOP on delay slot before returning to caller
  MIPS: tlb-r4k: Add missing HTW stop/start sequences
  MIPS: asm: uaccess: Add v1 register to clobber list on EVA
  MIPS: oprofile: Fix backtrace on 64-bit kernel
  MIPS: Loongson: Set Loongson-3's ISA level to MIPS64R1
  MIPS: Loongson: Fix the write-combine CCA value setting
  MIPS: IP27: Fix __node_distances undefined error
  MIPS: Loongson3: Fix __node_distances undefined error

9 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Linus Torvalds [Sat, 22 Nov 2014 00:13:34 +0000 (16:13 -0800)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mpe/linux

Pull powerpc fix from Michael Ellerman:
 "One fix from Scott, he says:

  This patch fixes a crash (introduced in v3.18-rc1) in the FSL MSI driver
  when threaded IRQs are enabled"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  powerpc/fsl_msi: mark the msi cascade handler IRQF_NO_THREAD

9 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 21 Nov 2014 23:46:17 +0000 (15:46 -0800)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Thomas Gleixner:
 "Misc fixes:
   - gold linker build fix
   - noxsave command line parsing fix
   - bugfix for NX setup
   - microcode resume path bug fix
   - _TIF_NOHZ versus TIF_NOHZ bugfix as discussed in the mysterious
     lockup thread"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86, syscall: Fix _TIF_NOHZ handling in syscall_trace_enter_phase1
  x86, kaslr: Handle Gold linker for finding bss/brk
  x86, mm: Set NX across entire PMD at boot
  x86, microcode: Update BSPs microcode on resume
  x86: Require exact match for 'noxsave' command line option

9 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 21 Nov 2014 23:44:54 +0000 (15:44 -0800)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "Misc fixes: two NUMA fixes, two cputime fixes and an RCU/lockdep fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/cputime: Fix clock_nanosleep()/clock_gettime() inconsistency
  sched/cputime: Fix cpu_timer_sample_group() double accounting
  sched/numa: Avoid selecting oneself as swap target
  sched/numa: Fix out of bounds read in sched_init_numa()
  sched: Remove lockdep check in sched_move_task()

9 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 21 Nov 2014 23:44:07 +0000 (15:44 -0800)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf fixes from Ingo Molnar:
 "Misc fixes: two Intel uncore driver fixes, a CPU-hotplug fix and a
  build dependencies fix"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel/uncore: Fix boot crash on SBOX PMU on Haswell-EP
  perf/x86/intel/uncore: Fix IRP uncore register offsets on Haswell EP
  perf: Fix corruption of sibling list with hotplug
  perf/x86: Fix embarrasing typo

9 years agoMerge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 21 Nov 2014 23:38:21 +0000 (15:38 -0800)]
Merge branch 'core-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull core fix from Ingo Molnar:
 "Fix GENMASK macro shift overflow"

Nobody seems to currently use GENMASK() to fill every single last bit
(which is what overflows) in-tree, and gcc would warn about it, so we
have that going for us.  But apparently there are pending changes that
want this.

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  bitops: Fix shift overflow in GENMASK macros

9 years agotcp: Restore RFC5961-compliant behavior for SYN packets
Calvin Owens [Thu, 20 Nov 2014 23:09:53 +0000 (15:09 -0800)]
tcp: Restore RFC5961-compliant behavior for SYN packets

Commit c3ae62af8e755 ("tcp: should drop incoming frames without ACK
flag set") was created to mitigate a security vulnerability in which a
local attacker is able to inject data into locally-opened sockets by
using TCP protocol statistics in procfs to quickly find the correct
sequence number.

This broke the RFC5961 requirement to send a challenge ACK in response
to spurious RST packets, which was subsequently fixed by commit
7b514a886ba50 ("tcp: accept RST without ACK flag").

Unfortunately, the RFC5961 requirement that spurious SYN packets be
handled in a similar manner remains broken.

RFC5961 section 4 states that:

   ... the handling of the SYN in the synchronized state SHOULD be
   performed as follows:

   1) If the SYN bit is set, irrespective of the sequence number, TCP
      MUST send an ACK (also referred to as challenge ACK) to the remote
      peer:

      <SEQ=SND.NXT><ACK=RCV.NXT><CTL=ACK>

      After sending the acknowledgment, TCP MUST drop the unacceptable
      segment and stop processing further.

   By sending an ACK, the remote peer is challenged to confirm the loss
   of the previous connection and the request to start a new connection.
   A legitimate peer, after restart, would not have a TCB in the
   synchronized state.  Thus, when the ACK arrives, the peer should send
   a RST segment back with the sequence number derived from the ACK
   field that caused the RST.

   This RST will confirm that the remote peer has indeed closed the
   previous connection.  Upon receipt of a valid RST, the local TCP
   endpoint MUST terminate its connection.  The local TCP endpoint
   should then rely on SYN retransmission from the remote end to
   re-establish the connection.

This patch lets SYN packets through the discard added in c3ae62af8e755,
so that spurious SYN packets are properly dealt with as per the RFC.

The challenge ACK is sent unconditionally and is rate-limited, so the
original vulnerability is not reintroduced by this patch.

Signed-off-by: Calvin Owens <calvinowens@fb.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Acked-by: Neal Cardwell <ncardwell@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
9 years agonet: Revert "net: avoid one atomic operation in skb_clone()"
Eric Dumazet [Fri, 21 Nov 2014 19:47:16 +0000 (11:47 -0800)]
net: Revert "net: avoid one atomic operation in skb_clone()"

Not sure what I was thinking, but doing anything after
releasing a refcount is suicidal or/and embarrassing.

By the time we set skb->fclone to SKB_FCLONE_FREE, another cpu
could have released last reference and freed whole skb.

We potentially corrupt memory or trap if CONFIG_DEBUG_PAGEALLOC is set.

Reported-by: Chris Mason <clm@fb.com>
Fixes: ce1a4ea3f1258 ("net: avoid one atomic operation in skb_clone()")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>