firefly-linux-kernel-4.4.55.git
15 years agosh: intc: Handle legacy IRQ reservation in vector map.
Paul Mundt [Mon, 2 Nov 2009 06:43:20 +0000 (15:43 +0900)]
sh: intc: Handle legacy IRQ reservation in vector map.

Different CPUs will have different starting vectors, with varying
amounts of reserved or unusable vector space prior to the first slot.
This introduces a legacy vector reservation system that inserts itself in
between the CPU vector map registration and the platform specific IRQ
setup. This works fine in practice as the only new vectors that boards
need to establish on their own should be dynamically allocated rather
than arbitrarily assigned. As a plus, this also makes all of the
converted platforms sparseirq ready.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Remove unused WP signal for SDHI0 and KFR2R09
Magnus Damm [Fri, 30 Oct 2009 06:26:04 +0000 (06:26 +0000)]
sh: Remove unused WP signal for SDHI0 and KFR2R09

Get rid of the unused WP signal for SDHI0 on KFR2R09.
This because yc304 on KFR2R09 is a Micro SD slot which
does not implement the WP signal.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add SDHI1 support to the AP325RXA board
Magnus Damm [Fri, 30 Oct 2009 06:22:03 +0000 (06:22 +0000)]
sh: Add SDHI1 support to the AP325RXA board

Update the SDHI platform data for the AP325RXA board
to include support for the CN7 Micro SD Card slot.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: intc: dynamic IRQ support.
Paul Mundt [Mon, 2 Nov 2009 01:30:26 +0000 (10:30 +0900)]
sh: intc: dynamic IRQ support.

This adds support for dynamic IRQ allocation/deallocation for all parts
using the SH-style vectored IRQs. While this is not inherently
INTC-specific, the INTC code is the main tie-in for vectored IRQ
registration, and is the only place that a full view of the utilized
vector map is possible.

The implementation is fairly straightforward, implementing a flat IRQ map
where each registered vector is reserved, allowing us to scan for holes
and dynamically wire up IRQs lazily later on in the boot stage. This
piggybacks on top of sparseirq in order to make the best use of the
available vector space.

Dynamic IRQs can be used for any number of things, ranging from MSI in
the SH-X3 PCIe case down to demux vectors for board FPGAs and system
controllers that presently allocate an arbitrary range. In the latter
case, this also allows those platforms to use sparseirq without blowing
up, which brings us one step closer to enabling sparseirq as the default
for all platform and CPU combinations.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add KFR2R09 specific memory pre/post R-standby code
Magnus Damm [Fri, 30 Oct 2009 04:24:48 +0000 (04:24 +0000)]
sh: Add KFR2R09 specific memory pre/post R-standby code

Add R-standby support to the KFR2R09 sdram code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add R-standby sleep mode support
Magnus Damm [Fri, 30 Oct 2009 04:24:40 +0000 (04:24 +0000)]
sh: Add R-standby sleep mode support

Add R-standby specific bits to the SuperH Mobile sleep code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Use RSMEM for sleep code on sh7724
Magnus Damm [Fri, 30 Oct 2009 04:24:32 +0000 (04:24 +0000)]
sh: Use RSMEM for sleep code on sh7724

Use RSMEM instead of ILMEM for sleep mode code storage on SH7724.
This allows us to use R-standby mode on SH7724.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add MMU and Cache handling sleep mode code
Magnus Damm [Fri, 30 Oct 2009 04:24:23 +0000 (04:24 +0000)]
sh: Add MMU and Cache handling sleep mode code

Add MMU and cache handling functionality to the SuperH Mobile
sleep code. The MMU and cache registers are saved and restored.
The MMU is disabled and the cache is flushed and disabled before
entering sleep modes if the SUSP_SH_MMU flag is set. This flag
should be set in the case of R-standby and most likely for future
U-standby support as well.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Keep track of allowed sleep modes
Magnus Damm [Fri, 30 Oct 2009 04:24:15 +0000 (04:24 +0000)]
sh: Keep track of allowed sleep modes

Add code to keep track of supported sleep modes. This to
only export cpuidle modes that are backed by board support
code. Also, do not allow suspend-to-ram if sdram board code
is missing.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Rework SuperH Mobile sleep mode code
Magnus Damm [Fri, 30 Oct 2009 04:24:07 +0000 (04:24 +0000)]
sh: Rework SuperH Mobile sleep mode code

Rework the SuperH Mobile sleep code from including
board specific code to allowing each board to provide
pre/post code snippets. These snippets should contain
sdram management code to enter and leave self-refresh.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add Ecovec24 specific memory pre/post sleep code
Magnus Damm [Fri, 30 Oct 2009 04:23:59 +0000 (04:23 +0000)]
sh: Add Ecovec24 specific memory pre/post sleep code

Add self-refresh handling code for the Ecovec24 board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add ap325rxa specific memory pre/post sleep code
Magnus Damm [Fri, 30 Oct 2009 04:23:51 +0000 (04:23 +0000)]
sh: Add ap325rxa specific memory pre/post sleep code

Add self-refresh handling code for the AP325RXA board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Move ap325rxa board code into separate directory
Magnus Damm [Fri, 30 Oct 2009 04:23:42 +0000 (04:23 +0000)]
sh: Move ap325rxa board code into separate directory

Move the AP325RXA board code from a single board file
to a separate directory. This to make it easy to add
support for sdram sleep mode code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add migor specific memory pre/post sleep code
Magnus Damm [Thu, 29 Oct 2009 10:52:31 +0000 (10:52 +0000)]
sh: Add migor specific memory pre/post sleep code

Add self-refresh handling code for the Migo-R board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add ms7724se specific memory pre/post sleep code
Magnus Damm [Thu, 29 Oct 2009 10:52:23 +0000 (10:52 +0000)]
sh: Add ms7724se specific memory pre/post sleep code

Add self-refresh handling code for the MS7724SE board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add kfr2r09 specific memory pre/post sleep code
Magnus Damm [Thu, 29 Oct 2009 10:52:15 +0000 (10:52 +0000)]
sh: Add kfr2r09 specific memory pre/post sleep code

Add self-refresh handling code for the KFR2R09 board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Allow boards to register memory pre/post sleep code
Magnus Damm [Thu, 29 Oct 2009 10:52:06 +0000 (10:52 +0000)]
sh: Allow boards to register memory pre/post sleep code

Add code to allow boards registering self-contained
functions for going to/from self-refresh. At this
point the board code is unused. When all supported
boards have been converted then the new sleep code
will make use of these functions.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add sh7724 notifier for R-standby save/restore
Magnus Damm [Thu, 29 Oct 2009 10:51:57 +0000 (10:51 +0000)]
sh: Add sh7724 notifier for R-standby save/restore

Make use of the recently added notifier chains for sh7724
r-standby register save/restore handling. At this point
only the BSC and INTC are handled.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add notifiers chains for cpu/board code
Magnus Damm [Thu, 29 Oct 2009 10:51:48 +0000 (10:51 +0000)]
sh: Add notifiers chains for cpu/board code

This patch adds atomic notifier chains for pre/post
sleep events. Useful for cpu code and boards that
need to save and restore register state before and
after entering a sleep mode.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Do not apply virt_to_phys() to a physical address
Matt Fleming [Thu, 29 Oct 2009 21:53:30 +0000 (21:53 +0000)]
sh: Do not apply virt_to_phys() to a physical address

The variable 'phys' already contains the physical address to flush. It
is not a virtual address and should not be passed to virt_to_phys().

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: perf events: Kill off left over debugging cruft.
Paul Mundt [Wed, 28 Oct 2009 09:02:15 +0000 (18:02 +0900)]
sh: perf events: Kill off left over debugging cruft.

num_events should be compared > MAX_HWEVENTS and not >=. The latter was
used as a debugging test which accidentally slipped in.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: perf events: Add preliminary support for SH-4A counters.
Paul Mundt [Wed, 28 Oct 2009 08:57:54 +0000 (17:57 +0900)]
sh: perf events: Add preliminary support for SH-4A counters.

This adds in preliminary support for the SH-4A performance counters.
Presently only the first 2 counters are supported, as these are the ones
of the most interest to the perf tool and end users. Counter chaining is
not presently handled, so these are simply implemented as 32-bit
counters.

This also establishes a perf event support framework for other hardware
counters, which the existing SH-4 oprofile code will migrate over to as
the SH-4A support evolves.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: mach-ecovec24: Add USB1 gadget support
Kuninori Morimoto [Wed, 28 Oct 2009 06:31:57 +0000 (06:31 +0000)]
sh: mach-ecovec24: Add USB1 gadget support

USB1 can change to host/function by checking PTB3.
This patch add USB1 gadget support and check PTB3 when boot,
and change name to usb1_common_XXX from usb1_host_XXX.

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: add SDHI1 support to ms7724se
Magnus Damm [Tue, 27 Oct 2009 10:49:55 +0000 (10:49 +0000)]
sh: add SDHI1 support to ms7724se

Add support for cn8 and SDHI1 to the ms7724se board.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: mac address through private data for sh_eth on ms7724se
Magnus Damm [Tue, 27 Oct 2009 10:47:34 +0000 (10:47 +0000)]
sh: mac address through private data for sh_eth on ms7724se

Convert the ms7724se board code to pass the mac
address to the sh_eth driver using platform data.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agoMerge branch 'sh/stable-updates'
Paul Mundt [Tue, 27 Oct 2009 08:10:24 +0000 (17:10 +0900)]
Merge branch 'sh/stable-updates'

15 years agosh: enable PERF_USE_VMALLOC across the board.
Paul Mundt [Tue, 27 Oct 2009 08:08:55 +0000 (17:08 +0900)]
sh: enable PERF_USE_VMALLOC across the board.

The vast majority of SH platforms want this, and the few that don't
aren't going to care one way or the other. Enable it across the board.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Bump up dma_ops initialization far earlier in the boot process.
Paul Mundt [Tue, 27 Oct 2009 08:07:45 +0000 (17:07 +0900)]
sh: Bump up dma_ops initialization far earlier in the boot process.

Presently this was tacked on to the dma debug init bits from
fs_initcall(), which is far too late for devices setting up their own
per-device coherent areas.

Throw this in the beginning of mem_init(), as per the x86 iommu
allocation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Clean up more superfluous symbol exports.
Paul Mundt [Tue, 27 Oct 2009 02:51:19 +0000 (11:51 +0900)]
sh: Clean up more superfluous symbol exports.

Many of these symbols went away completely, or we just never cared about
them in the first place. Trim the exports down to the essential set.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: intc: Make ack_regs generally available.
Paul Mundt [Tue, 27 Oct 2009 02:36:43 +0000 (11:36 +0900)]
sh: intc: Make ack_regs generally available.

Currently this is ifdef'ed under SH-3 and SH-4A, but there are other CPUs
that will need this as well. Given the size of the existing data
structures, this doesn't cause any additional cacheline utilization for
the existing users, so has no direct impact on the data structures.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh64: cache flush symbol exports.
Paul Mundt [Tue, 27 Oct 2009 01:51:35 +0000 (10:51 +0900)]
sh64: cache flush symbol exports.

These were previously hidden in sh_ksyms_32, despite also being needed
for sh64 now that the cache.c code is shared.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Fix up dma_is_consistent().
Paul Mundt [Tue, 27 Oct 2009 01:41:58 +0000 (10:41 +0900)]
sh: Fix up dma_is_consistent().

This fixes up the dma_is_consistent() definition for the various
coherence options.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Kill off superfluous arch/sh/drivers/pci/Kconfig.
Paul Mundt [Tue, 27 Oct 2009 01:36:55 +0000 (10:36 +0900)]
sh: Kill off superfluous arch/sh/drivers/pci/Kconfig.

Now that this contains a grand total of 1 Kconfig option, it's hardly
worth keeping split out. Roll CONFIG_PCI back in to the top-level
architecture Kconfig, along with the other bus types.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Revamp PCI DMA coherence Kconfig bits.
Paul Mundt [Tue, 27 Oct 2009 01:35:02 +0000 (10:35 +0900)]
sh: Revamp PCI DMA coherence Kconfig bits.

Leaving this configurable caused more trouble than it was ever worth, so
just make it explicit. Boards that are verified one way or the other can
fix up their selects accordingly. We presently default to non-coherent
for most platforms.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Annotate irq functions with "notrace"
Matt Fleming [Mon, 26 Oct 2009 22:19:49 +0000 (22:19 +0000)]
sh: Annotate irq functions with "notrace"

Now that SH's irqflags functions are out of line it becomes necessary to
mark them as "notrace" so that we don't try to trace them.

[ Do the same for irq_64.c -- PFM. ]

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: fix watchdog timer for sh7780/sh7785
Valentin R Sitsikov [Fri, 16 Oct 2009 10:45:47 +0000 (10:45 +0000)]
sh: fix watchdog timer for sh7780/sh7785

Signed-off-by: Valentin Sitdikov <valentin.sitdikov@siemens.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Fix hugetlbfs dependencies for SH-3 && MMU configurations.
Paul Mundt [Mon, 26 Oct 2009 22:22:37 +0000 (07:22 +0900)]
sh: Fix hugetlbfs dependencies for SH-3 && MMU configurations.

The hugetlb dependencies presently depend on SUPERH && MMU while the
hugetlb page size definitions depend on CPU_SH4 or CPU_SH5. This
unfortunately allows SH-3 + MMU configurations to enable hugetlbfs
without a corresponding HPAGE_SHIFT definition, resulting in the build
blowing up.

As SH-3 doesn't support variable page sizes, we tighten up the
dependenies a bit to prevent hugetlbfs from being enabled. These days
we also have a shiny new SYS_SUPPORTS_HUGETLBFS, so switch to using
that rather than adding to the list of corner cases in fs/Kconfig.

Reported-by: Kristoffer Ericson <kristoffer.ericson@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Document uImage.bin target in archhelp.
Paul Mundt [Mon, 26 Oct 2009 22:17:12 +0000 (07:17 +0900)]
sh: Document uImage.bin target in archhelp.

This was missing from the previous patch.

Reported-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: mac address through private data for sh_eth on ecovec24
Magnus Damm [Mon, 26 Oct 2009 10:44:37 +0000 (10:44 +0000)]
sh: mac address through private data for sh_eth on ecovec24

Convert the ecovec24 board code to pass the mac
address to the sh_eth driver using platform data.
Also, remove the static clock to allow Runtime PM.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: add hwblk_id to sh_eth on ecovec24
Magnus Damm [Mon, 26 Oct 2009 10:41:58 +0000 (10:41 +0000)]
sh: add hwblk_id to sh_eth on ecovec24

Add HWBLK_ETHER to the sh_eth platform device
to allow Runtime PM of the ethernet hardware.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agoMerge branch 'sh/stable-updates'
Paul Mundt [Mon, 26 Oct 2009 10:46:59 +0000 (19:46 +0900)]
Merge branch 'sh/stable-updates'

15 years agosh: add uImage.bin target
Magnus Damm [Mon, 26 Oct 2009 10:12:39 +0000 (10:12 +0000)]
sh: add uImage.bin target

Add an uImage.bin target to allow uncompressed uImages.
Useful for boards with busted u-boot decompression like
the rsk7203 on my desk.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: rsk7203 CONFIG_MTD=n fix
Magnus Damm [Mon, 26 Oct 2009 10:08:55 +0000 (10:08 +0000)]
sh: rsk7203 CONFIG_MTD=n fix

Fix the rsk7203 board code to build with CONFIG_MTD=n.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: fix kexec by removing check for old kexec-tools
Magnus Damm [Mon, 26 Oct 2009 10:30:48 +0000 (10:30 +0000)]
sh: fix kexec by removing check for old kexec-tools

This unbreaks kexec support. Without this fix all
cases of kexec fails since __pa() does not behave
like PHYSADDR(). The downside is that we also kill
the code blocking users running old kexec-tools.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agoMerge branch 'sh/stable-updates'
Paul Mundt [Mon, 26 Oct 2009 01:48:18 +0000 (10:48 +0900)]
Merge branch 'sh/stable-updates'

Conflicts:
arch/sh/kernel/dwarf.c

15 years agoMerge branch 'sh/sdhi-mfd'
Paul Mundt [Mon, 26 Oct 2009 01:47:44 +0000 (10:47 +0900)]
Merge branch 'sh/sdhi-mfd'

Conflicts:
arch/sh/boards/mach-ecovec24/setup.c
arch/sh/boards/mach-kfr2r09/setup.c

15 years agosh: mach-ecevec24: Add SDHI support
Kuninori Morimoto [Fri, 2 Oct 2009 07:54:42 +0000 (07:54 +0000)]
sh: mach-ecevec24: Add SDHI support

Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: SDHI platform data to the kfr2r09 board
Magnus Damm [Fri, 2 Oct 2009 02:23:19 +0000 (02:23 +0000)]
sh: SDHI platform data to the kfr2r09 board

Add SD Card support to the kfr2r09 board using the
sh_mobile_sdhi driver hooked up to SDHI0 and yc304.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: SDHI platform data to the SE7724 board
Magnus Damm [Fri, 2 Oct 2009 02:23:07 +0000 (02:23 +0000)]
sh: SDHI platform data to the SE7724 board

Add SD Card support to the se7724 board using the
sh_mobile_sdhi driver hooked up to SDHI0 and CN7.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: SDHI platform data to the AP325RXA board
Magnus Damm [Fri, 2 Oct 2009 02:22:56 +0000 (02:22 +0000)]
sh: SDHI platform data to the AP325RXA board

Convert the AP325 board to use sh_mobile_sdhi for the
SD Card connected to CN3 instead of mmc_spi.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: SDHI platform data to the Migo-R board
Magnus Damm [Fri, 2 Oct 2009 02:22:43 +0000 (02:22 +0000)]
sh: SDHI platform data to the Migo-R board

Convert the Migo-R board to use sh_mobile_sdhi for the
SD Card connected to CN9 instead of mmc_spi.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agommc: Add SuperH to the tmio-mmc Kconfig
Magnus Damm [Fri, 2 Oct 2009 02:22:21 +0000 (02:22 +0000)]
mmc: Add SuperH to the tmio-mmc Kconfig

Add SUPERH to the Kconfig dependencies for tmio_mmc.

This change allows us to drive the SDHI hardware blocks
found in SuperH Mobile with tmio_mmc.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agomfd: Add SuperH Mobile SDHI platform driver
Magnus Damm [Fri, 2 Oct 2009 02:22:09 +0000 (02:22 +0000)]
mfd: Add SuperH Mobile SDHI platform driver

This patch adds an MFD driver for the SuperH Mobile SDHI
hardware block. At this point the driver simply wraps the
tmio-mmc driver with some clock code. In the future this
driver is the place to put SDHI specific hotplug code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Check for return_to_handler when unwinding the stack
Matt Fleming [Sat, 24 Oct 2009 18:56:57 +0000 (18:56 +0000)]
sh: Check for return_to_handler when unwinding the stack

When CONFIG_FUNCTION_GRAPH_TRACER is enabled the function graph tracer
may patch return addresses on the stack with the address of
return_to_handler(). This really confuses the DWARF unwinder because it
will try find the caller of return_to_handler(), not the caller of the
real return address.

So teach the DWARF unwinder how to find the real return address whenever
it encounters return_to_handler().

This patch does not cope very well when multiple return addresses on the
stack have been patched. To make it work properly it would require state
to track how many return_to_handler()'s have been seen so that we'd know
where to look in current->curr_ret_stack[]. So for now, instead of
trying to handle this, just moan if more than one return address on the
stack has been patched.

Signed-off-by: Matt Fleming <matt@console-pimps.org>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Build fix: define more __movmem* symbols
Lubomir Rintel [Thu, 22 Oct 2009 11:58:37 +0000 (11:58 +0000)]
sh: Build fix: define more __movmem* symbols

ERROR: "__movmemSI12" [net/unix/unix.ko] undefined!
ERROR: "__movmemSI52" [net/ipv6/sit.ko] undefined!
ERROR: "__movmemSI24" [net/ipv6/ipv6.ko] undefined!
ERROR: "__movmemSI60" [net/ipv6/ipv6.ko] undefined!
ERROR: "__movmemSI16" [net/ipv6/ipv6.ko] undefined!
ERROR: "__movmemSI20" [net/ipv6/ipv6.ko] undefined!
ERROR: "__movmemSI32" [net/ipv6/ipv6.ko] undefined!

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: __irq_entry annotate do_IRQ().
Paul Mundt [Mon, 26 Oct 2009 00:58:31 +0000 (09:58 +0900)]
sh: __irq_entry annotate do_IRQ().

This adds an __irq_entry annotation for do_IRQ() so that the IRQ
annotation in the function graph tracer works as advertized. We already
have the IRQENTRY section wired up, so this is just a trivial addition
to actually make use of it.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Add dma-mapping support for dma_alloc/free_coherent() overrides.
Paul Mundt [Mon, 26 Oct 2009 00:50:51 +0000 (09:50 +0900)]
sh: Add dma-mapping support for dma_alloc/free_coherent() overrides.

This moves the current dma_alloc/free_coherent() calls to a generic
variant and plugs them in for the nommu default. Other variants can
override the defaults in the dma mapping ops directly.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus
Linus Torvalds [Thu, 22 Oct 2009 22:35:16 +0000 (07:35 +0900)]
Merge git://git./linux/kernel/git/rusty/linux-2.6-for-linus

* git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus:
  move virtrng_remove to .devexit.text
  move virtballoon_remove to .devexit.text
  virtio_blk: Revert serial number support
  virtio: let header files include virtio_ids.h
  virtio_blk: revert QUEUE_FLAG_VIRT addition

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Linus Torvalds [Thu, 22 Oct 2009 22:34:23 +0000 (07:34 +0900)]
Merge git://git./linux/kernel/git/davem/net-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (21 commits)
  niu: VLAN_ETH_HLEN should be used to make sure that the whole MAC header was copied to the head buffer in the Vlan packets case
  KS8851: Fix ks8851_set_rx_mode() for IFF_MULTICAST
  KS8851: Fix MAC address write order
  KS8851: Add soft reset at probe time
  net: fix section mismatch in fec.c
  net: Fix struct inet_timewait_sock bitfield annotation
  tcp: Try to catch MSG_PEEK bug
  net: Fix IP_MULTICAST_IF
  bluetooth: static lock key fix
  bluetooth: scheduling while atomic bug fix
  tcp: fix TCP_DEFER_ACCEPT retrans calculation
  tcp: reduce SYN-ACK retrans for TCP_DEFER_ACCEPT
  tcp: accept socket after TCP_DEFER_ACCEPT period
  Revert "tcp: fix tcp_defer_accept to consider the timeout"
  AF_UNIX: Fix deadlock on connecting to shutdown socket
  ethoc: clear only pending irqs
  ethoc: inline regs access
  vmxnet3: use dev_dbg, fix build for CONFIG_BLOCK=n
  virtio_net: use dev_kfree_skb_any() in free_old_xmit_skbs()
  be2net: fix support for PCI hot plug
  ...

15 years agomove virtrng_remove to .devexit.text
Uwe Kleine-König [Thu, 1 Oct 2009 08:28:35 +0000 (10:28 +0200)]
move virtrng_remove to .devexit.text

The function virtrng_remove is used only wrapped by __devexit_p so define
it using __devexit.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Rusty Russell <rusty@rustcorp.com.au>
Cc: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agomove virtballoon_remove to .devexit.text
Uwe Kleine-König [Thu, 1 Oct 2009 08:28:33 +0000 (10:28 +0200)]
move virtballoon_remove to .devexit.text

The function virtballoon_remove is used only wrapped by __devexit_p so
define it using __devexit.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agovirtio_blk: Revert serial number support
Rusty Russell [Thu, 22 Oct 2009 22:39:28 +0000 (16:39 -0600)]
virtio_blk: Revert serial number support

This reverts "Add serial number support for virtio_blk, V4a".

Turns out that virtio_pci, lguest and s/390 all have an 8 bit limit
on virtio config space, so noone could ever use this.

This is coming back later in a cleaner form.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: john cooper <john.cooper@redhat.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
15 years agovirtio: let header files include virtio_ids.h
Christian Borntraeger [Wed, 30 Sep 2009 09:17:21 +0000 (11:17 +0200)]
virtio: let header files include virtio_ids.h

Rusty,

commit 3ca4f5ca73057a617f9444a91022d7127041970a
    virtio: add virtio IDs file
moved all device IDs into a single file. While the change itself is
a very good one, it can break userspace applications. For example
if a userspace tool wanted to get the ID of virtio_net it used to
include virtio_net.h. This does no longer work, since virtio_net.h
does not include virtio_ids.h.
This patch moves all "#include <linux/virtio_ids.h>" from the C
files into the header files, making the header files compatible with
the old ones.

In addition, this patch exports virtio_ids.h to userspace.

CC: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agovirtio_blk: revert QUEUE_FLAG_VIRT addition
Christoph Hellwig [Fri, 4 Sep 2009 20:44:42 +0000 (22:44 +0200)]
virtio_blk: revert QUEUE_FLAG_VIRT addition

It seems like the addition of QUEUE_FLAG_VIRT caueses major performance
regressions for Fedora users:

https://bugzilla.redhat.com/show_bug.cgi?id=509383
https://bugzilla.redhat.com/show_bug.cgi?id=505695

while I can't reproduce those extreme regressions myself I think the flag
is wrong.

Rationale:

  QUEUE_FLAG_VIRT expands to QUEUE_FLAG_NONROT which casus the queue
  unplugged immediately.  This is not a good behaviour for at least
  qemu and kvm where we do have significant overhead for every
  I/O operations.  Even with all the latested speeups (native AIO,
  MSI support, zero copy) we can only get native speed for up to 128kb
  I/O requests we already are down to 66% of native performance for 4kb
  requests even on my laptop running the Intel X25-M SSD for which the
  QUEUE_FLAG_NONROT was designed.
  If we ever get virtio-blk overhead low enough that this flag makes
  sense it should only be set based on a feature flag set by the host.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
15 years agoniu: VLAN_ETH_HLEN should be used to make sure that the whole MAC header was copied...
Joyce Yu [Thu, 22 Oct 2009 00:21:10 +0000 (17:21 -0700)]
niu: VLAN_ETH_HLEN should be used to make sure that the whole MAC header was copied to the head buffer in the Vlan packets case

Signed-off-by: Joyce Yu <joyce.yu@sun.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoMerge branch 'for-linus' of git://git.infradead.org/users/eparis/notify
Linus Torvalds [Wed, 21 Oct 2009 23:28:28 +0000 (08:28 +0900)]
Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify

* 'for-linus' of git://git.infradead.org/users/eparis/notify:
  dnotify: ignore FS_EVENT_ON_CHILD
  inotify: fix coalesce duplicate events into a single event in special case
  inotify: deprecate the inotify kernel interface
  fsnotify: do not set group for a mark before it is on the i_list

15 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
Linus Torvalds [Wed, 21 Oct 2009 23:27:12 +0000 (08:27 +0900)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: hp_sdc_rtc - fix test in hp_sdc_rtc_read_rt()
  Input: atkbd - consolidate force release quirks for volume keys
  Input: logips2pp - model 73 is actually TrackMan FX
  Input: i8042 - add Sony Vaio VGN-FZ240E to the nomux list
  Input: fix locking issue in /proc/bus/input/ handlers
  Input: atkbd - postpone restoring LED/repeat rate at resume
  Input: atkbd - restore resetting LED state at startup
  Input: i8042 - make pnp_data_busted variable boolean instead of int
  Input: synaptics - add another Protege M300 to rate blacklist

15 years agoMerge branch 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Linus Torvalds [Wed, 21 Oct 2009 23:26:15 +0000 (08:26 +0900)]
Merge branch 'kvm-updates/2.6.32' of git://git./virt/kvm/kvm

* 'kvm-updates/2.6.32' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: Prevent kvm_init from corrupting debugfs structures
  KVM: MMU: fix pointer cast
  KVM: use proper hrtimer function to retrieve expiration time

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm
Linus Torvalds [Wed, 21 Oct 2009 23:25:36 +0000 (08:25 +0900)]
Merge git://git./linux/kernel/git/agk/linux-2.6-dm

* git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-2.6-dm:
  dm snapshot: allow chunk size to be less than page size
  dm snapshot: use unsigned integer chunk size
  dm snapshot: lock snapshot while supplying status
  dm exception store: fix failed set_chunk_size error path
  dm snapshot: require non zero chunk size by end of ctr
  dm: dec_pending needs locking to save error value
  dm: add missing del_gendisk to alloc_dev error path
  dm log: userspace fix incorrect luid cast in userspace_ctr
  dm snapshot: free exception store on init failure
  dm snapshot: sort by chunk size to fix race

15 years agoPM: Make warning in suspend_test_finish() less likely to happen
Rafael J. Wysocki [Tue, 20 Oct 2009 04:45:02 +0000 (06:45 +0200)]
PM: Make warning in suspend_test_finish() less likely to happen

Increase TEST_SUSPEND_SECONDS to 10 so the warning in
suspend_test_finish() doesn't annoy the users of slower systems so much.

Also, make the warning print the suspend-resume cycle time, so that we
know why the warning actually triggered.

Patch prepared during the hacking session at the Kernel Summit in Tokyo.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agommc: at91_mci: Don't include asm/mach/mmc.h
Uwe Kleine-König [Wed, 21 Oct 2009 07:46:59 +0000 (09:46 +0200)]
mmc: at91_mci: Don't include asm/mach/mmc.h

This fixes a compile bug introduced in

6ef297f (ARM: 5720/1: Move MMCI header to amba include dir)

That commit moved arch/arm/include/asm/mach/mmc.h to
include/linux/amba/mmci.h.  Just removing the include was enough.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Linus Walleij <linus.walleij@stericsson.com>
Acked-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: Bill Gatliff <bgat@billgatliff.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Russell King <rmk+kernel@arm.linux.org.uk>
Cc: Pierre Ossman <drzeus@drzeus.cx>
Cc: linux-arm-kernel@lists.infradead.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoMerge branch 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal...
Linus Torvalds [Wed, 21 Oct 2009 23:17:15 +0000 (08:17 +0900)]
Merge branch 'sh/for-2.6.32' of git://git./linux/kernel/git/lethal/sh-2.6

* 'sh/for-2.6.32' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6:
  sh: Kill off stray HAVE_FTRACE_SYSCALLS reference.
  sh: Remove BKL from landisk gio.
  sh: disabled cache handling fix.
  sh: Fix up single page flushing to use PAGE_SIZE.

15 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Linus Torvalds [Wed, 21 Oct 2009 23:16:01 +0000 (08:16 +0900)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: aesni-intel - Fix irq_fpu_usable usage
  crypto: padlock-sha - Fix stack alignment

15 years agonfs: Fix nfs_parse_mount_options() kfree() leak
Yinghai Lu [Tue, 20 Oct 2009 05:13:46 +0000 (14:13 +0900)]
nfs: Fix nfs_parse_mount_options() kfree() leak

Fix a (small) memory leak in one of the error paths of the NFS mount
options parsing code.

Regression introduced in 2.6.30 by commit a67d18f (NFS: load the
rpc/rdma transport module automatically).

Reported-by: Yinghai Lu <yinghai@kernel.org>
Reported-by: Pekka Enberg <penberg@cs.helsinki.fi>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agofs: pipe.c null pointer dereference
Earl Chew [Mon, 19 Oct 2009 22:55:41 +0000 (15:55 -0700)]
fs: pipe.c null pointer dereference

This patch fixes a null pointer exception in pipe_rdwr_open() which
generates the stack trace:

> Unable to handle kernel NULL pointer dereference at 0000000000000028 RIP:
>  [<ffffffff802899a5>] pipe_rdwr_open+0x35/0x70
>  [<ffffffff8028125c>] __dentry_open+0x13c/0x230
>  [<ffffffff8028143d>] do_filp_open+0x2d/0x40
>  [<ffffffff802814aa>] do_sys_open+0x5a/0x100
>  [<ffffffff8021faf3>] sysenter_do_call+0x1b/0x67

The failure mode is triggered by an attempt to open an anonymous
pipe via /proc/pid/fd/* as exemplified by this script:

=============================================================
while : ; do
   { echo y ; sleep 1 ; } | { while read ; do echo z$REPLY; done ; } &
   PID=$!
   OUT=$(ps -efl | grep 'sleep 1' | grep -v grep |
        { read PID REST ; echo $PID; } )
   OUT="${OUT%% *}"
   DELAY=$((RANDOM * 1000 / 32768))
   usleep $((DELAY * 1000 + RANDOM % 1000 ))
   echo n > /proc/$OUT/fd/1                 # Trigger defect
done
=============================================================

Note that the failure window is quite small and I could only
reliably reproduce the defect by inserting a small delay
in pipe_rdwr_open(). For example:

 static int
 pipe_rdwr_open(struct inode *inode, struct file *filp)
 {
       msleep(100);
       mutex_lock(&inode->i_mutex);

Although the defect was observed in pipe_rdwr_open(), I think it
makes sense to replicate the change through all the pipe_*_open()
functions.

The core of the change is to verify that inode->i_pipe has not
been released before attempting to manipulate it. If inode->i_pipe
is no longer present, return ENOENT to indicate so.

The comment about potentially using atomic_t for i_pipe->readers
and i_pipe->writers has also been removed because it is no longer
relevant in this context. The inode->i_mutex lock must be used so
that inode->i_pipe can be dealt with correctly.

Signed-off-by: Earl Chew <earl_chew@agilent.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
15 years agoKS8851: Fix ks8851_set_rx_mode() for IFF_MULTICAST
Ben Dooks [Mon, 19 Oct 2009 23:49:05 +0000 (23:49 +0000)]
KS8851: Fix ks8851_set_rx_mode() for IFF_MULTICAST

In ks8851_set_rx_mode() the case handling IFF_MULTICAST was also setting
the RXCR1_AE bit by accident. This meant that all unicast frames where
being accepted by the device. Remove RXCR1_AE from this case.

Note, RXCR1_AE was also masking a problem with setting the MAC address
properly, so needs to be applied after fixing the MAC write order.

Fixes a bug reported by Doong, Ping of Micrel. This version of the
patch avoids setting RXCR1_ME for all cases.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoKS8851: Fix MAC address write order
Ben Dooks [Mon, 19 Oct 2009 23:49:04 +0000 (23:49 +0000)]
KS8851: Fix MAC address write order

The MAC address register was being written in the wrong order, so add
a new address macro to convert mac-address byte to register address and
a ks8851_wrreg8() function to write each byte without having to worry
about any difficult byte swapping.

Fixes a bug reported by Doong, Ping of Micrel.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoKS8851: Add soft reset at probe time
Ben Dooks [Mon, 19 Oct 2009 23:49:03 +0000 (23:49 +0000)]
KS8851: Add soft reset at probe time

Issue a full soft reset at probe time.

This was reported by Doong Ping of Micrel, but no explanation of why this
is necessary or what bug it is fixing. Add it as it does not seem to hurt
the current driver and ensures that the device is in a known state when we
start setting it up.

Signed-off-by: Ben Dooks <ben@simtec.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agonet: fix section mismatch in fec.c
Steven King [Wed, 21 Oct 2009 01:51:37 +0000 (18:51 -0700)]
net: fix section mismatch in fec.c

fec_enet_init is called by both fec_probe and fec_resume, so it
shouldn't be marked as __init.

Signed-off-by: Steven King <sfking@fdwdc.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agodnotify: ignore FS_EVENT_ON_CHILD
Andreas Gruenbacher [Wed, 14 Oct 2009 22:13:23 +0000 (00:13 +0200)]
dnotify: ignore FS_EVENT_ON_CHILD

Mask off FS_EVENT_ON_CHILD in dnotify_handle_event().  Otherwise, when there
is more than one watch on a directory and dnotify_should_send_event()
succeeds, events with FS_EVENT_ON_CHILD set will trigger all watches and cause
spurious events.

This case was overlooked in commit e42e2773.

#define _GNU_SOURCE

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>

static void create_event(int s, siginfo_t* si, void* p)
{
printf("create\n");
}

static void delete_event(int s, siginfo_t* si, void* p)
{
printf("delete\n");
}

int main (void) {
struct sigaction action;
char *tmpdir, *file;
int fd1, fd2;

sigemptyset (&action.sa_mask);
action.sa_flags = SA_SIGINFO;

action.sa_sigaction = create_event;
sigaction (SIGRTMIN + 0, &action, NULL);

action.sa_sigaction = delete_event;
sigaction (SIGRTMIN + 1, &action, NULL);

# define TMPDIR "/tmp/test.XXXXXX"
tmpdir = malloc(strlen(TMPDIR) + 1);
strcpy(tmpdir, TMPDIR);
mkdtemp(tmpdir);

# define TMPFILE "/file"
file = malloc(strlen(tmpdir) + strlen(TMPFILE) + 1);
sprintf(file, "%s/%s", tmpdir, TMPFILE);

fd1 = open (tmpdir, O_RDONLY);
fcntl(fd1, F_SETSIG, SIGRTMIN);
fcntl(fd1, F_NOTIFY, DN_MULTISHOT | DN_CREATE);

fd2 = open (tmpdir, O_RDONLY);
fcntl(fd2, F_SETSIG, SIGRTMIN + 1);
fcntl(fd2, F_NOTIFY, DN_MULTISHOT | DN_DELETE);

if (fork()) {
/* This triggers a create event */
creat(file, 0600);
/* This triggers a create and delete event (!) */
unlink(file);
} else {
sleep(1);
rmdir(tmpdir);
}

return 0;
}

Signed-off-by: Andreas Gruenbacher <agruen@suse.de>
Signed-off-by: Eric Paris <eparis@redhat.com>
15 years agonet: Fix struct inet_timewait_sock bitfield annotation
Eric Dumazet [Sun, 18 Oct 2009 22:48:51 +0000 (22:48 +0000)]
net: Fix struct inet_timewait_sock bitfield annotation

commit 9e337b0f (net: annotate inet_timewait_sock bitfields)
added 4/8 bytes in struct inet_timewait_sock.

Fix this by declaring tw_ipv6_offset in the 'flags' bitfield
The 14 bits hole is named tw_pad to make it cleary apparent.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: Try to catch MSG_PEEK bug
Herbert Xu [Mon, 19 Oct 2009 19:41:06 +0000 (19:41 +0000)]
tcp: Try to catch MSG_PEEK bug

This patch tries to print out more information when we hit the
MSG_PEEK bug in tcp_recvmsg.  It's been around since at least
2005 and it's about time that we finally fix it.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agocrypto: aesni-intel - Fix irq_fpu_usable usage
Huang Ying [Tue, 20 Oct 2009 07:20:47 +0000 (16:20 +0900)]
crypto: aesni-intel - Fix irq_fpu_usable usage

When renaming kernel_fpu_using to irq_fpu_usable, the semantics of the
function is changed too, from mesuring whether kernel is using FPU,
that is, the FPU is NOT available, to measuring whether FPU is usable,
that is, the FPU is available.

But the usage of irq_fpu_usable in aesni-intel_glue.c is not changed
accordingly. This patch fixes this.

Signed-off-by: Huang Ying <ying.huang@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
15 years agonet: Fix IP_MULTICAST_IF
Eric Dumazet [Mon, 19 Oct 2009 06:41:58 +0000 (06:41 +0000)]
net: Fix IP_MULTICAST_IF

ipv4/ipv6 setsockopt(IP_MULTICAST_IF) have dubious __dev_get_by_index() calls.

This function should be called only with RTNL or dev_base_lock held, or reader
could see a corrupt hash chain and eventually enter an endless loop.

Fix is to call dev_get_by_index()/dev_put().

If this happens to be performance critical, we could define a new dev_exist_by_index()
function to avoid touching dev refcount.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosh: Convert to asm-generic/dma-mapping-common.h
Paul Mundt [Tue, 20 Oct 2009 03:55:56 +0000 (12:55 +0900)]
sh: Convert to asm-generic/dma-mapping-common.h

This converts the old DMA mapping support to the new generic
dma-mapping-common.h abstraction.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agobluetooth: static lock key fix
Dave Young [Sun, 18 Oct 2009 20:28:30 +0000 (20:28 +0000)]
bluetooth: static lock key fix

When shutdown ppp connection, lockdep waring about non-static key
will happen, it is caused by the lock is not initialized properly
at that time.

Fix with tuning the lock/skb_queue_head init order

[   94.339261] INFO: trying to register non-static key.
[   94.342509] the code is fine but needs lockdep annotation.
[   94.342509] turning off the locking correctness validator.
[   94.342509] Pid: 0, comm: swapper Not tainted 2.6.31-mm1 #2
[   94.342509] Call Trace:
[   94.342509]  [<c0248fbe>] register_lock_class+0x58/0x241
[   94.342509]  [<c024b5df>] ? __lock_acquire+0xb57/0xb73
[   94.342509]  [<c024ab34>] __lock_acquire+0xac/0xb73
[   94.342509]  [<c024b7fa>] ? lock_release_non_nested+0x17b/0x1de
[   94.342509]  [<c024b662>] lock_acquire+0x67/0x84
[   94.342509]  [<c04cd1eb>] ? skb_dequeue+0x15/0x41
[   94.342509]  [<c054a857>] _spin_lock_irqsave+0x2f/0x3f
[   94.342509]  [<c04cd1eb>] ? skb_dequeue+0x15/0x41
[   94.342509]  [<c04cd1eb>] skb_dequeue+0x15/0x41
[   94.342509]  [<c054a648>] ? _read_unlock+0x1d/0x20
[   94.342509]  [<c04cd641>] skb_queue_purge+0x14/0x1b
[   94.342509]  [<fab94fdc>] l2cap_recv_frame+0xea1/0x115a [l2cap]
[   94.342509]  [<c024b5df>] ? __lock_acquire+0xb57/0xb73
[   94.342509]  [<c0249c04>] ? mark_lock+0x1e/0x1c7
[   94.342509]  [<f8364963>] ? hci_rx_task+0xd2/0x1bc [bluetooth]
[   94.342509]  [<fab95346>] l2cap_recv_acldata+0xb1/0x1c6 [l2cap]
[   94.342509]  [<f8364997>] hci_rx_task+0x106/0x1bc [bluetooth]
[   94.342509]  [<fab95295>] ? l2cap_recv_acldata+0x0/0x1c6 [l2cap]
[   94.342509]  [<c02302c4>] tasklet_action+0x69/0xc1
[   94.342509]  [<c022fbef>] __do_softirq+0x94/0x11e
[   94.342509]  [<c022fcaf>] do_softirq+0x36/0x5a
[   94.342509]  [<c022fe14>] irq_exit+0x35/0x68
[   94.342509]  [<c0204ced>] do_IRQ+0x72/0x89
[   94.342509]  [<c02038ee>] common_interrupt+0x2e/0x34
[   94.342509]  [<c024007b>] ? pm_qos_add_requirement+0x63/0x9d
[   94.342509]  [<c038e8a5>] ? acpi_idle_enter_bm+0x209/0x238
[   94.342509]  [<c049d238>] cpuidle_idle_call+0x5c/0x94
[   94.342509]  [<c02023f8>] cpu_idle+0x4e/0x6f
[   94.342509]  [<c0534153>] rest_init+0x53/0x55
[   94.342509]  [<c0781894>] start_kernel+0x2f0/0x2f5
[   94.342509]  [<c0781091>] i386_start_kernel+0x91/0x96

Reported-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Tested-by: Oliver Hartkopp <oliver@hartkopp.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agobluetooth: scheduling while atomic bug fix
Dave Young [Sun, 18 Oct 2009 20:24:41 +0000 (20:24 +0000)]
bluetooth: scheduling while atomic bug fix

Due to driver core changes dev_set_drvdata will call kzalloc which should be
in might_sleep context, but hci_conn_add will be called in atomic context

Like dev_set_name move dev_set_drvdata to work queue function.

oops as following:

Oct  2 17:41:59 darkstar kernel: [  438.001341] BUG: sleeping function called from invalid context at mm/slqb.c:1546
Oct  2 17:41:59 darkstar kernel: [  438.001345] in_atomic(): 1, irqs_disabled(): 0, pid: 2133, name: sdptool
Oct  2 17:41:59 darkstar kernel: [  438.001348] 2 locks held by sdptool/2133:
Oct  2 17:41:59 darkstar kernel: [  438.001350]  #0:  (sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP){+.+.+.}, at: [<faa1d2f5>] lock_sock+0xa/0xc [l2cap]
Oct  2 17:41:59 darkstar kernel: [  438.001360]  #1:  (&hdev->lock){+.-.+.}, at: [<faa20e16>] l2cap_sock_connect+0x103/0x26b [l2cap]
Oct  2 17:41:59 darkstar kernel: [  438.001371] Pid: 2133, comm: sdptool Not tainted 2.6.31-mm1 #2
Oct  2 17:41:59 darkstar kernel: [  438.001373] Call Trace:
Oct  2 17:41:59 darkstar kernel: [  438.001381]  [<c022433f>] __might_sleep+0xde/0xe5
Oct  2 17:41:59 darkstar kernel: [  438.001386]  [<c0298843>] __kmalloc+0x4a/0x15a
Oct  2 17:41:59 darkstar kernel: [  438.001392]  [<c03f0065>] ? kzalloc+0xb/0xd
Oct  2 17:41:59 darkstar kernel: [  438.001396]  [<c03f0065>] kzalloc+0xb/0xd
Oct  2 17:41:59 darkstar kernel: [  438.001400]  [<c03f04ff>] device_private_init+0x15/0x3d
Oct  2 17:41:59 darkstar kernel: [  438.001405]  [<c03f24c5>] dev_set_drvdata+0x18/0x26
Oct  2 17:41:59 darkstar kernel: [  438.001414]  [<fa51fff7>] hci_conn_init_sysfs+0x40/0xd9 [bluetooth]
Oct  2 17:41:59 darkstar kernel: [  438.001422]  [<fa51cdc0>] ? hci_conn_add+0x128/0x186 [bluetooth]
Oct  2 17:41:59 darkstar kernel: [  438.001429]  [<fa51ce0f>] hci_conn_add+0x177/0x186 [bluetooth]
Oct  2 17:41:59 darkstar kernel: [  438.001437]  [<fa51cf8a>] hci_connect+0x3c/0xfb [bluetooth]
Oct  2 17:41:59 darkstar kernel: [  438.001442]  [<faa20e87>] l2cap_sock_connect+0x174/0x26b [l2cap]
Oct  2 17:41:59 darkstar kernel: [  438.001448]  [<c04c8df5>] sys_connect+0x60/0x7a
Oct  2 17:41:59 darkstar kernel: [  438.001453]  [<c024b703>] ? lock_release_non_nested+0x84/0x1de
Oct  2 17:41:59 darkstar kernel: [  438.001458]  [<c028804b>] ? might_fault+0x47/0x81
Oct  2 17:41:59 darkstar kernel: [  438.001462]  [<c028804b>] ? might_fault+0x47/0x81
Oct  2 17:41:59 darkstar kernel: [  438.001468]  [<c033361f>] ? __copy_from_user_ll+0x11/0xce
Oct  2 17:41:59 darkstar kernel: [  438.001472]  [<c04c9419>] sys_socketcall+0x82/0x17b
Oct  2 17:41:59 darkstar kernel: [  438.001477]  [<c020329d>] syscall_call+0x7/0xb

Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: fix TCP_DEFER_ACCEPT retrans calculation
Julian Anastasov [Mon, 19 Oct 2009 10:10:40 +0000 (10:10 +0000)]
tcp: fix TCP_DEFER_ACCEPT retrans calculation

Fix TCP_DEFER_ACCEPT conversion between seconds and
retransmission to match the TCP SYN-ACK retransmission periods
because the time is converted to such retransmissions. The old
algorithm selects one more retransmission in some cases. Allow
up to 255 retransmissions.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: reduce SYN-ACK retrans for TCP_DEFER_ACCEPT
Julian Anastasov [Mon, 19 Oct 2009 10:03:58 +0000 (10:03 +0000)]
tcp: reduce SYN-ACK retrans for TCP_DEFER_ACCEPT

Change SYN-ACK retransmitting code for the TCP_DEFER_ACCEPT
users to not retransmit SYN-ACKs during the deferring period if
ACK from client was received. The goal is to reduce traffic
during the deferring period. When the period is finished
we continue with sending SYN-ACKs (at least one) but this time
any traffic from client will change the request to established
socket allowing application to terminate it properly.
Also, do not drop acked request if sending of SYN-ACK fails.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agotcp: accept socket after TCP_DEFER_ACCEPT period
Julian Anastasov [Mon, 19 Oct 2009 10:01:56 +0000 (10:01 +0000)]
tcp: accept socket after TCP_DEFER_ACCEPT period

Willy Tarreau and many other folks in recent years
were concerned what happens when the TCP_DEFER_ACCEPT period
expires for clients which sent ACK packet. They prefer clients
that actively resend ACK on our SYN-ACK retransmissions to be
converted from open requests to sockets and queued to the
listener for accepting after the deferring period is finished.
Then application server can decide to wait longer for data
or to properly terminate the connection with FIN if read()
returns EAGAIN which is an indication for accepting after
the deferring period. This change still can have side effects
for applications that expect always to see data on the accepted
socket. Others can be prepared to work in both modes (with or
without TCP_DEFER_ACCEPT period) and their data processing can
ignore the read=EAGAIN notification and to allocate resources for
clients which proved to have no data to send during the deferring
period. OTOH, servers that use TCP_DEFER_ACCEPT=1 as flag (not
as a timeout) to wait for data will notice clients that didn't
send data for 3 seconds but that still resend ACKs.
Thanks to Willy Tarreau for the initial idea and to
Eric Dumazet for the review and testing the change.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoRevert "tcp: fix tcp_defer_accept to consider the timeout"
David S. Miller [Tue, 20 Oct 2009 02:12:36 +0000 (19:12 -0700)]
Revert "tcp: fix tcp_defer_accept to consider the timeout"

This reverts commit 6d01a026b7d3009a418326bdcf313503a314f1ea.

Julian Anastasov, Willy Tarreau and Eric Dumazet have come up
with a more correct way to deal with this.

Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agosh: Fix up cacheflush routine symbol exports.
Paul Mundt [Mon, 19 Oct 2009 06:52:20 +0000 (15:52 +0900)]
sh: Fix up cacheflush routine symbol exports.

Fixes up flush_dcache_page() references by modules with run-time cache
disabling.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agosh: Fix up uninitialized variable warning in dwarf unwinder.
Paul Mundt [Mon, 19 Oct 2009 06:51:21 +0000 (15:51 +0900)]
sh: Fix up uninitialized variable warning in dwarf unwinder.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
15 years agoAF_UNIX: Fix deadlock on connecting to shutdown socket
Tomoki Sekiyama [Mon, 19 Oct 2009 06:17:37 +0000 (23:17 -0700)]
AF_UNIX: Fix deadlock on connecting to shutdown socket

I found a deadlock bug in UNIX domain socket, which makes able to DoS
attack against the local machine by non-root users.

How to reproduce:
1. Make a listening AF_UNIX/SOCK_STREAM socket with an abstruct
    namespace(*), and shutdown(2) it.
 2. Repeat connect(2)ing to the listening socket from the other sockets
    until the connection backlog is full-filled.
 3. connect(2) takes the CPU forever. If every core is taken, the
    system hangs.

PoC code: (Run as many times as cores on SMP machines.)

int main(void)
{
int ret;
int csd;
int lsd;
struct sockaddr_un sun;

/* make an abstruct name address (*) */
memset(&sun, 0, sizeof(sun));
sun.sun_family = PF_UNIX;
sprintf(&sun.sun_path[1], "%d", getpid());

/* create the listening socket and shutdown */
lsd = socket(AF_UNIX, SOCK_STREAM, 0);
bind(lsd, (struct sockaddr *)&sun, sizeof(sun));
listen(lsd, 1);
shutdown(lsd, SHUT_RDWR);

/* connect loop */
alarm(15); /* forcely exit the loop after 15 sec */
for (;;) {
csd = socket(AF_UNIX, SOCK_STREAM, 0);
ret = connect(csd, (struct sockaddr *)&sun, sizeof(sun));
if (-1 == ret) {
perror("connect()");
break;
}
puts("Connection OK");
}
return 0;
}

(*) Make sun_path[0] = 0 to use the abstruct namespace.
    If a file-based socket is used, the system doesn't deadlock because
    of context switches in the file system layer.

Why this happens:
 Error checks between unix_socket_connect() and unix_wait_for_peer() are
 inconsistent. The former calls the latter to wait until the backlog is
 processed. Despite the latter returns without doing anything when the
 socket is shutdown, the former doesn't check the shutdown state and
 just retries calling the latter forever.

Patch:
 The patch below adds shutdown check into unix_socket_connect(), so
 connect(2) to the shutdown socket will return -ECONREFUSED.

Signed-off-by: Tomoki Sekiyama <tomoki.sekiyama.qu@hitachi.com>
Signed-off-by: Masanori Yoshida <masanori.yoshida.tv@hitachi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoethoc: clear only pending irqs
Thomas Chou [Wed, 7 Oct 2009 14:16:43 +0000 (14:16 +0000)]
ethoc: clear only pending irqs

This patch fixed the problem of dropped packets due to lost of
interrupt requests. We should only clear what was pending at the
moment we read the irq source reg.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoethoc: inline regs access
Thomas Chou [Wed, 7 Oct 2009 14:16:42 +0000 (14:16 +0000)]
ethoc: inline regs access

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: David S. Miller <davem@davemloft.net>
15 years agoinotify: fix coalesce duplicate events into a single event in special case
Wei Yongjun [Wed, 14 Oct 2009 12:54:03 +0000 (20:54 +0800)]
inotify: fix coalesce duplicate events into a single event in special case

If we do rename a dir entry, like this:

  rename("/tmp/ino7UrgoJ.rename1", "/tmp/ino7UrgoJ.rename2")
  rename("/tmp/ino7UrgoJ.rename2", "/tmp/ino7UrgoJ")

The duplicate events should be coalesced into a single event. But those two
events do not be coalesced into a single event, due to some bad check in
event_compare(). It can not match the two NULL inodes as the same event.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Eric Paris <eparis@redhat.com>
15 years agoinotify: deprecate the inotify kernel interface
Eric Paris [Mon, 29 Jun 2009 15:13:30 +0000 (11:13 -0400)]
inotify: deprecate the inotify kernel interface

In 2.6.33 there will be no users of the inotify interface.  Mark it for
removal as fsnotify is more generic and is easier to use.

Signed-off-by: Eric Paris <eparis@redhat.com>
15 years agofsnotify: do not set group for a mark before it is on the i_list
Eric Paris [Fri, 11 Sep 2009 17:03:19 +0000 (13:03 -0400)]
fsnotify: do not set group for a mark before it is on the i_list

fsnotify_add_mark is supposed to add a mark to the g_list and i_list and to
set the group and inode for the mark.  fsnotify_destroy_mark_by_entry uses
the fact that ->group != NULL to know if this group should be destroyed or
if it's already been done.

But fsnotify_add_mark sets the group and inode before it actually adds the
mark to the i_list and g_list.  This can result in a race in inotify, it
requires 3 threads.

sys_inotify_add_watch("file") sys_inotify_add_watch("file") sys_inotify_rm_watch([a])
inotify_update_watch()
inotify_new_watch()
inotify_add_to_idr()
   ^--- returns wd = [a]
inotfiy_update_watch()
inotify_new_watch()
inotify_add_to_idr()
fsnotify_add_mark()
   ^--- returns wd = [b]
returns to userspace;
inotify_idr_find([a])
   ^--- gives us the pointer from task 1
fsnotify_add_mark()
   ^--- this is going to set the mark->group and mark->inode fields, but will
return -EEXIST because of the race with [b].
fsnotify_destroy_mark()
   ^--- since ->group != NULL we call back
into inotify_freeing_mark() which calls
inotify_remove_from_idr([a])

since fsnotify_add_mark() failed we call:
inotify_remove_from_idr([a])     <------WHOOPS it's not in the idr, this could
have been any entry added later!

The fix is to make sure we don't set mark->group until we are sure the mark is
on the inode and fsnotify_add_mark will return success.

Signed-off-by: Eric Paris <eparis@redhat.com>
15 years agoInput: hp_sdc_rtc - fix test in hp_sdc_rtc_read_rt()
Roel Kluin [Sun, 18 Oct 2009 07:17:15 +0000 (00:17 -0700)]
Input: hp_sdc_rtc - fix test in hp_sdc_rtc_read_rt()

If left unsigned the hp_sdc_rtc_read_i8042timer() return value will not
be checked correctly.

Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>