Arend van Spriel [Tue, 14 Apr 2015 18:10:27 +0000 (20:10 +0200)]
brcmfmac: make scheduled scan support conditional
The scheduled scan support depends on firmware supporting the PNO
feature. This feature is optional so add a feature flag for this
in the driver and announce scheduled scan support accordingly.
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arend van Spriel [Tue, 14 Apr 2015 18:10:26 +0000 (20:10 +0200)]
brcmfmac: add description for feature flags
Some feature flags were not described in the header file. Adding
the description.
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arend van Spriel [Tue, 14 Apr 2015 18:10:25 +0000 (20:10 +0200)]
brcmfmac: update wiphy band information upon updating regulatory domain
When change the country code the available channels may change. So
the wiphy bands should be updated accordingly.
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Arend van Spriel [Tue, 14 Apr 2015 18:10:24 +0000 (20:10 +0200)]
brcmfmac: use static superset of channels for wiphy bands
The driver was constructing a list of channels per wiphy band
by querying the device. This list is not what the hardware is
able to do as it is already filtered by the country setting in
the device. As user-space may change the country this would
require updating the channel list which is not recommended [1].
This patch introduces a superset of channels. The individual
channels are disabled appropriately by querying the device.
[1] http://mid.gmane.org/
1426706320.3001.21.camel@sipsolutions.net
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Reviewed-by: Daniel (Deognyoun) Kim <dekim@broadcom.com>
Reviewed-by: Pieter-Paul Giesberts <pieterpg@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Zhaoyang Liu [Mon, 13 Apr 2015 16:02:25 +0000 (21:32 +0530)]
mwifiex: fix invalid HT IE configuration in FW
This patch fixes an issue where it was discovered that driver is setting
invalid HT IEs to FW. This was happening because bug in parsing HT IE.
Driver would incorrectly point to start of HT IE while FW only needs actual
HT configuration - excluding EID and length.
Signed-off-by: Zhaoyang Liu <liuzy@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Avinash Patil [Mon, 13 Apr 2015 16:02:24 +0000 (21:32 +0530)]
revert "mwifiex: enable aggregation for TID 6 and 7 streams"
This patch reverts 'commit
c5534844cdee ("mwifiex:
enable aggregation for TID 6 and 7 streams")'.
TID6 & TID7 is voice traffic which is quite time sensitive.
Do not enable any type of aggregation on these TIDs.
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Cathy Luo <cluo@marvell.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Kalle Valo [Sat, 9 May 2015 13:21:49 +0000 (16:21 +0300)]
Merge tag 'iwlwifi-next-for-kalle-2015-05-03' of https://git./linux/kernel/git/iwlwifi/iwlwifi-next
* major rework of the scan code (Luca)
* some work on the thermal code (Chaya Rachel)
* some work on the firwmare debugging infrastructure
David Spinadel [Tue, 28 Apr 2015 15:06:45 +0000 (18:06 +0300)]
iwlwifi: mvm: include wildcard SSID in scans
Fix a copy paste bug that didn't copy wildcard SSIDs to
scan requests. This bug causes scan with only wildcard
SSID to be passive, and scans with more than one SSID to
send only the direct probes.
Fixes: 2a28ac14c518 ("iwlwifi: mvm: add common scan params to thw iwl_mvm_scan_params struct")
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Tue, 21 Apr 2015 15:32:25 +0000 (18:32 +0300)]
iwlwifi: mvm: remove some unused stuff from scan.c
Some more tidbits left over from the legacy scan removal.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Chaya Rachel Ivgi [Sun, 19 Apr 2015 09:26:39 +0000 (12:26 +0300)]
iwlwifi: mvm: make thermal throttling values configurable per NIC family
The thermal throttling parameters were constant and hardcoded, not allowing
changes for different NIC families.
Change this so that the values are part of the NIC family configuration and
are not constant (so they can be changed dynamically in the future).
Signed-off-by: Chaya Rachel Ivgi <chaya.rachel.ivgi@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Johannes Berg [Mon, 20 Apr 2015 15:31:10 +0000 (17:31 +0200)]
iwlwifi: mvm: don't reset key index on HW restart
When a firmware restart is done, don't try to reprogram the keys to new
slots but rather just keep the old key index, while skipping keys that
weren't programmed before.
Not only does this restore the state more faithfully, but it will also
allow using the HW key index for internal purposes as an array index.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Reviewed-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Mon, 20 Apr 2015 12:29:03 +0000 (15:29 +0300)]
iwlwifi: mvm: rename generic_scan_cmd functions to dwell
The generic scan command functions are now irrelevant, since both
sched and regular scans are in the same code. So rename this
functions to dwell and isolate all the dwell-related setting to them.
Keeping the dwell code separate makes it easier to compare the LMAC
and UMAC versions.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Mon, 20 Apr 2015 11:47:49 +0000 (14:47 +0300)]
iwlwifi: mvm: move all LMAC scan flags into a single funtion
Having an LMAC counterpart for the existing UMAC flags function makes
things more consistent and easy to compare and spot the differences.
The flags are the same, but are in different bits, so unfortunately we
can't use a single function for both APIs.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Mon, 20 Apr 2015 11:37:16 +0000 (14:37 +0300)]
iwlwifi: mvm: move all UMAC scan flags setting into the relevant function
Clean the code a little by moving all the flags into the right
function. Additionally, rename the function, since "common" is now
irrelevant.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
David Spinadel [Tue, 14 Apr 2015 06:17:43 +0000 (09:17 +0300)]
iwlwifi: mvm: remove deprecated command IDs
Signed-off-by: David Spinadel <david.spinadel@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Tue, 14 Apr 2015 20:14:48 +0000 (23:14 +0300)]
iwlwifi: allow to limit the size of the external buffer for firmware debugging
When we use an external buffer, it is allocated from the
t DRAM and can be as big as 64MB. This buffer is huge and
might not be needed for the specific issue being chased.
Especially if lots of dumps are going to be created.
Allow to limit the size of the buffer in the configuration.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Eliad Peller [Tue, 14 Apr 2015 08:36:23 +0000 (11:36 +0300)]
iwlwifi: mvm: avoid use-after-free on iwl_mvm_d0i3_enable_tx() [BUGFIX]
qos_seq points (to a struct) inside the command response data.
Make sure to free the response only after qos_seq is not
needed anymore.
type=bugfix
bug=not-tracked
fixes=I78c07110b59dcd389207bd2b168b0a2760839fe0
Change-Id: I619ce2c17e064dc98c7be9abc1e23175fdc8fb9a
Reported-by: Heng Luo <heng.luo@intel.com>
Signed-off-by: Eliad Peller <eliadx.peller@intel.com>
Reviewed-on: https://gerrit.rds.intel.com/r/55381
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Tested-by: IWL Jenkins
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 17 Apr 2015 11:49:58 +0000 (14:49 +0300)]
iwlwifi: mvm: combine UMAC scans into one
With just a few differences left in the UMAC scan functions now, we
can merge them into one, taking care of the small difference according
to the total number of iterations required.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 17 Apr 2015 08:18:46 +0000 (11:18 +0300)]
iwlwifi: mvm: trim sched scan delay down to 16-bit for LMAC as well
In theory, LMAC scans can handle a 32-bit delay, but since waiting for
over 18 hours to start the scan is a bit silly and to keep it aligned
with UMAC scans (which only support 16-bit delays), trim it down to
16-bits.
This makes the LMAC vs. UMAC and the UMAC reg scan vs. UMAC sched scan
code more similar.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 17 Apr 2015 06:53:55 +0000 (09:53 +0300)]
iwlwifi: mvm: combine LMAC scans into one
The last remaining difference between the regular scan and scheduled
scan flows for LMAC is the FW capabilities check for EBS scans.
Merge these checks into a new function and then combine the LMAC scan
functions into a single one.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 16 Apr 2015 17:13:28 +0000 (20:13 +0300)]
iwlwifi: mvm: add number of scan iterations and multiplier to params
As another step towards combining the scan and sched scan functions,
add parameters that tell the scan function how many iterations we want
(i.e. 1 for normal scan, more for scheduled scan) and that set the
full scan multiplier (only meaningful for LMAC).
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Wed, 15 Apr 2015 13:34:13 +0000 (16:34 +0300)]
iwlwifi: mvm: combine LMAC and UMAC preq generation
The probe request to be added to both LMAC and UMAC scan commands are
identical, so move the generation out of the LMAC/UMAC-specific code.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Wed, 15 Apr 2015 13:21:16 +0000 (16:21 +0300)]
iwlwifi: mvm: rename scan_calc_params to scan_calc_dwell
To make things clearer, rename the iwl_mvm_scan_calc_params() function
to iwl_mvm_calc_dwell() and make it calculate and fill in only
dwell-related parameters.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 2 Apr 2015 14:49:04 +0000 (17:49 +0300)]
iwlwifi: mvm: combine SSID functions for sched and regular scans
Now that both scheduled scan and regular scan SSID populating
functions do the same thing, they can be combined into a single
function.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 2 Apr 2015 13:31:42 +0000 (16:31 +0300)]
iwlwifi: mvm: revert order of SSIDs for sched scans
The firmware inverts the order of the SSIDs sent out in probe requests
(for some reason). For regular scans, we've been passing the SSIDs in
the opposite order so they go out in the order we want. With
scheduled scans, we were not doing that, so they were sent out in
reverse order of priority. Fix that by using the reverse order when
populating the SSIDs array for scheduled scans as well.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 2 Apr 2015 12:37:05 +0000 (15:37 +0300)]
iwlwifi: mvm: combine ssid_bitmap setting for regular scans
The only difference in the ssid_bitmap between LMAC and UMAC scans is
that in LMAC bits 1 to 20 are used, while in UMAC bits 0 to 19 are
used (*sigh*). So we can combine the bitmap creation into a single
function and simply shift left if LMAC is used.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Wed, 1 Apr 2015 21:08:35 +0000 (00:08 +0300)]
iwlwifi: mvm: add common scan params to thw iwl_mvm_scan_params struct
Many parameters are common for all scans. Instead of parsing the
cfg80211 scan and sched scan requests differently in each flow, move
the parsing outside of the API/scan-type specific functions. In this
way, we only need to differentiate between scan types once.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Wed, 1 Apr 2015 14:37:44 +0000 (17:37 +0300)]
iwlwifi: mvm: combine parts of UMAC and LMAC sched scans
Similarly to the regular scan patch, a lot of the UMAC and LMAC sched
scan code is also almost identical. Grab the low hanging fruits by
combining the obvious parts.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Wed, 1 Apr 2015 14:09:56 +0000 (17:09 +0300)]
iwlwifi: mvm: combine parts of UMAC and LMAC scans
A lot of the UMAC and LMAC scan code is almost identical. Grab the
low hanging fruits by combining the obvious parts.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Sun, 19 Apr 2015 06:57:09 +0000 (09:57 +0300)]
iwlwifi: clarify the device / firmware mapping in Kconfig
The lists of the devices supported by either MVM or DVM
firmwares was incomplete. Point to
https://wireless.wiki.kernel.org/en/users/drivers/iwlwifi#firmware
instead of maintaining the lists.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Arik Nemtsov [Mon, 23 Feb 2015 12:42:41 +0000 (14:42 +0200)]
iwlwifi: mvm: iterate all interfaces during HW recovery cleanup
Usually during HW recovery the state of all active interfaces is cleaned
up during drv_start(). There's a special case where a HW restart is
requested when an interface is going down. In this case the iface-iterator
won't see this interface and we won't clean it. This has bad consequences
once the interface is legitimately brought up again.
Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 27 Mar 2015 07:28:26 +0000 (10:28 +0300)]
iwlwifi: mvm: combine scan size checks into a common function
Instead of repeating the same code in 4 different places, combine the
comparisons into a new function. Additionally, this change fixes UMAC
scans where the RRM IEs were not taken into consideration when
calculating the IE length.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Mon, 30 Mar 2015 12:09:24 +0000 (15:09 +0300)]
iwlwifi: mvm: always use iwl_mvm_scan_size to calculate the scan size
We have a function (iwl_mvm_scan_size()) that can calculate the scan
size for both UMAC and LMAC scans. Use that function instead of
calculating manually for LMAC scan and sched scan.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Mon, 16 Mar 2015 12:49:55 +0000 (14:49 +0200)]
iwlwifi: mvm: allow scheduled scan for all the firmwares
We don't support -9.ucode so, all the released firmwares
support scheduled scan properly.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Wed, 1 Apr 2015 21:25:44 +0000 (00:25 +0300)]
iwlwifi: mvm: some clean ups in fw-api-scan.h
Remove unused struct iwl_scan_offload_req and enum
iwl_scan_offload_flags which are not used anymore. Rename
iwl_scan_offload_schedule to iwl_scan_schedule_lmac to make it clear
that this is for LMAC only. And fix a small typo.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Liad Kaufman [Thu, 2 Apr 2015 13:54:27 +0000 (16:54 +0300)]
iwlwifi: rs: remove unneeded check of average tpt in window
Previously there was a check that compared window->average_tpt
to some value, and if it was different - it set it to that
value. However, this value was already calculated and set in
_rs_collect_tx_data(), so the entire check is unneeded.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Liad Kaufman [Mon, 5 Jan 2015 12:06:14 +0000 (14:06 +0200)]
iwlwifi: pcie: support marbh fw dbg mode
This adds support for configuring and retrieving the FW
monitor in MARBH mode.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 20 Mar 2015 14:11:28 +0000 (16:11 +0200)]
iwlwifi: mvm: differentiate net-detect from sched scan
Net-detect scans were using the same type as sched scan, which was
causing the driver to return -EBUSY and prevent the system from
suspending if there was an ongoing scheduled scan. To avoid this, add
a new type for net-detect and don't stop anything when it is
requested, so that the existing scheduled scan will be resumed when
the system wakes up.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 20 Mar 2015 13:51:36 +0000 (15:51 +0200)]
iwlwifi: mvm: move scan code from mac80211.c to scan.c
Move all the scan code that was in mac80211.c to scan.c where it
belongs, leaving only the parts that are specific to mac80211 ops.
Change some function definitions slightly to improve consistency.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 20 Mar 2015 11:35:47 +0000 (13:35 +0200)]
iwlwifi: mvm: rename unified_scan symbols to just scan
All scans are using the unified APIs now, so using "unified" in the
symbols is useless and just make them much longer and the main
difference between scans now is LMAC vs. UMAC. Remove "unified" from
all relevant symbols.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 19 Mar 2015 20:58:33 +0000 (22:58 +0200)]
iwlwifi: mvm: generalize the other-scan stopping code
Instead of hardcoding the differences between UMAC scans and LMAC
scans (which in this case is the number of simultaneous scans that can
run), introduce a max_scans variable and stop scans of the other type
(i.e. stop sched scan if regular scan is being attempted and
vice-versa) if the number of running scans reached the maximum.
Add a function that checks if the maximum number of scans was reached
and stops the appropriate scan to make room for the new scan.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 20 Mar 2015 07:29:42 +0000 (09:29 +0200)]
iwlwifi: mvm: check if scan can be started before cancelling other scans
If a new scan cannot be run for some reason, we shouldn't cancel other
ongoing scans. Move the checks to before the code that cancels other
scans.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Fri, 20 Mar 2015 06:59:56 +0000 (08:59 +0200)]
iwlwifi: mvm: don't wait for scan stopped work when cancelling scans
Now that we have separate flags for stopping scans, we don't need to
wait for the scan stopped work to complete before starting the new
scan. Previously we needed it because we had no way of distinguishing
the scan that was being stopped from the scan that was currently
running. With the new flags there won't be any confusions and we are
able to handle the stop for the correct type of scan.
Thus we can remove the iwl_mvm_cancel_scan_wait_notif() function.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Tue, 10 Feb 2015 08:42:26 +0000 (10:42 +0200)]
iwlwifi: mvm: convert scan_status to a bitmap
LMAC scans cannot handle more than one scan at a time, but UMAC scans
can. To avoid confusion we should combine the states of these two
types of scans. To do so, we need to support mutliple scans at the
same time for UMAC.
This commit changes the scan_status element from a single value to a
bitmask of running scan types for LMAC. Later, we will modify UMAC
scans to use the same state bitmask.
Additionally, add stopping scan flags for scheduled and regular scans.
This makes it easier to differentiate and handle stop requests
triggered by the driver and spontaneous stops generated by the
firmware.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 9 Apr 2015 11:48:11 +0000 (14:48 +0300)]
iwlwifi: mvm: don't increase max_out_time when low priority scan is requested
In some cases, max_out_time value is smaller than 200 and having the
NL80211_SCAN_FLAG_LOW_PRIORITY flag was actually causing the
max_out_time to be increased. To avoid that, set max_out_time to 200
only if it's greater than 200.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Luciano Coelho [Thu, 9 Apr 2015 09:18:56 +0000 (12:18 +0300)]
iwlwifi: mvm: add scan parameters debugging info
Add scan parameters information to make it easier to debug scan dwell
times and fragmentation.
Signed-off-by: Luciano Coelho <luciano.coelho@intel.com>
Reviewed-by: Alexander Bondar <alexander.bondar@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Eyal Shapira [Sun, 12 Apr 2015 20:45:27 +0000 (23:45 +0300)]
iwlwifi: rs: cleanup last_txrate_idx
last_txrate_idx isn't used anymore and can be dropped as this info
exists already somewhere else.
Signed-off-by: Eyal Shapira <eyalx.shapira@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Liad Kaufman [Sun, 5 Apr 2015 10:52:50 +0000 (13:52 +0300)]
iwlwifi: rs: remove code duplication when filling lq cmd
Same code appear a few lines later while the position has
no effect on the actual flow.
Signed-off-by: Liad Kaufman <liad.kaufman@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Matti Gottlieb [Sun, 29 Mar 2015 10:38:16 +0000 (13:38 +0300)]
iwlwifi: mvm: ROC: Reduce the aux roc max delay
When user space requests mac80211 to transmit a frame off
channel, mac80211 notifies the driver, and the driver requests
a time event from the ucode, and then transmits the frame.
When the driver requests a time event, it can specify what is the allowed
max delay for starting the time event.
When the max delay is too big, this can cause a timeout in the user space,
that is waiting for the frame to be transmitted.
Currently the max delay is extremely long.
Reduce the max delay for the AUX ROC time event that is sent to the ucode.
Signed-off-by: Matti Gottlieb <matti.gottlieb@intel.com>
Reviewed-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Wed, 29 Apr 2015 10:12:18 +0000 (13:12 +0300)]
Merge remote-tracking branch 'iwlwifi-fixes/master' into iwlwifi-next
Johannes Berg [Tue, 21 Apr 2015 07:21:46 +0000 (09:21 +0200)]
iwlwifi: mvm: force quota update update after FW restart
During firmware restart, the quota command isn't calculated multiple
times, but after the firmware restart it has to be sent, so force it.
Otherwise the firmware crashes.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Emmanuel Grumbach [Tue, 28 Apr 2015 12:00:23 +0000 (15:00 +0300)]
iwlwifi: mvm: fix typo in CONFIG option
I forgot to rename the CPTCFG_ prefix...
Fixes: 484b3d13b4ac ("iwlwifi: mvm: add debugfs entry with the number of net-detect scans")
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Eran Harary [Mon, 27 Apr 2015 07:29:31 +0000 (10:29 +0300)]
iwlwifi: mvm: don't power off the device between INIT and OPER firmwares
Our device needs two different firmwares: the INIT firmware
and the operational (OPER) firmware. The first one is run
when the driver loads and it returns calibrations results
as well as the NVM. The second one implements the WiFi
protocol.
If the wlan interface is not brought up, the device is put
to low power state: no firmware will be running. When the
interface is brought up, we would run the OPER firmware
only and reuse the results of the run of the INIT firmware
when the driver was loaded. This is changing with this
patch.
We now run the INIT firmware every time mac80211 calls
start(). The penalty for that is minimal since the INIT
firwmare run fast. I now also avoid to power down the device
between the INIT and OPER firmware on certains buses.
The motivation for this change is that there are components
on the device (MFUART) that are triggered by the INIT
firmware and need the device to be powered up in order to
keep running. Powering the device down between the INIT and
OPER firmware would stop these components and prevent them
from running again since they are triggered by the INIT
firmware only.
The new flow allows this and also allows to trigger these
components again when the interface is brought up after
it has been brought down.
Signed-off-by: Eran Harary <eran.harary@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Kalle Valo [Tue, 28 Apr 2015 11:43:54 +0000 (14:43 +0300)]
Merge ath-next from ath.git
Major changes in ath10k:
* enable channel 144 on 5 GHz
* enable Adaptive Noise Immunity (ANI) by default
* add Wake on Wireless LAN (WOW) patterns support
* add basic Tunneled Direct Link Setup (TDLS) support
* add multi-channel support for QCA6174
* enable IBSS RSN support
* enable Bluetooth Coexistance whenever firmware supports it
* add more versatile way to set bitrates used by the firmware
Linus Torvalds [Mon, 27 Apr 2015 21:05:19 +0000 (14:05 -0700)]
Merge git://git./linux/kernel/git/davem/net
Pull networking fixes from David Miller:
1) mlx4 doesn't check fully for supported valid RSS hash function, fix
from Amir Vadai
2) Off by one in ibmveth_change_mtu(), from David Gibson
3) Prevent altera chip from reporting false error interrupts in some
circumstances, from Chee Nouk Phoon
4) Get rid of that stupid endless loop trying to allocate a FIN packet
in TCP, and in the process kill deadlocks. From Eric Dumazet
5) Fix get_rps_cpus() crash due to wrong invalid-cpu value, also from
Eric Dumazet
6) Fix two bugs in async rhashtable resizing, from Thomas Graf
7) Fix topology server listener socket namespace bug in TIPC, from Ying
Xue
8) Add some missing HAS_DMA kconfig dependencies, from Geert
Uytterhoeven
9) bgmac driver intends to force re-polling but does so by returning
the wrong value from it's ->poll() handler. Fix from Rafał Miłecki
10) When the creater of an rhashtable configures a max size for it,
don't bark in the logs and drop insertions when that is exceeded.
Fix from Johannes Berg
11) Recover from out of order packets in ppp mppe properly, from Sylvain
Rochet
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
bnx2x: really disable TPA if 'disable_tpa' option is set
net:treewide: Fix typo in drivers/net
net/mlx4_en: Prevent setting invalid RSS hash function
mdio-mux-gpio: use new gpiod_get_array and gpiod_put_array functions
netfilter; Add some missing default cases to switch statements in nft_reject.
ppp: mppe: discard late packet in stateless mode
ppp: mppe: sanity error path rework
net/bonding: Make DRV macros private
net: rfs: fix crash in get_rps_cpus()
altera tse: add support for fixed-links.
pxa168: fix double deallocation of managed resources
net: fix crash in build_skb()
net: eth: altera: Resolve false errors from MSGDMA to TSE
ehea: Fix memory hook reference counting crashes
net/tg3: Release IRQs on permanent error
net: mdio-gpio: support access that may sleep
inet: fix possible panic in reqsk_queue_unlink()
rhashtable: don't attempt to grow when at max_size
bgmac: fix requests for extra polling calls from NAPI
tcp: avoid looping in tcp_send_fin()
...
Michal Schmidt [Mon, 27 Apr 2015 15:20:38 +0000 (17:20 +0200)]
bnx2x: really disable TPA if 'disable_tpa' option is set
bnx2x's 'disable_tpa=1' module option is not respected properly and TPA
(transparent packet aggregation) remains enabled. Even though the
module option causes LRO to be disabled, TPA is enabled in GRO mode.
Additionally, disabling GRO via ethtool then has no effect. One can
still observe tpa_* statistics increase and large packets being received
in tcpdump.
The bug was an unintended consequence of commit
aebf6244cd39 "bnx2x: Be
more forgiving toward SW GRO".
Fix it by following the bp->disable_tpa flag when initializing fp's.
Signed-off-by: Michal Schmidt <mschmidt@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Masanari Iida [Mon, 27 Apr 2015 14:14:57 +0000 (23:14 +0900)]
net:treewide: Fix typo in drivers/net
This patch fix spelling typo in printk.
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Amir Vadai [Mon, 27 Apr 2015 10:40:56 +0000 (13:40 +0300)]
net/mlx4_en: Prevent setting invalid RSS hash function
mlx4_en_check_rxfh_func() was checking for hardware support before
setting a known RSS hash function, but didn't do any check before
setting unknown RSS hash function. Need to make it fail on such values.
In this occasion, moved the actual setting of the new value from the
check function into mlx4_en_set_rxfh().
Fixes: 947cbb0 ("net/mlx4_en: Support for configurable RSS hash function")
Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Rojhalat Ibrahim [Mon, 27 Apr 2015 08:37:31 +0000 (10:37 +0200)]
mdio-mux-gpio: use new gpiod_get_array and gpiod_put_array functions
Use the new gpiod_get_array and gpiod_put_array functions
(added to mainline in the v4.1 merge window) for obtaining and
disposing of GPIO descriptors.
Cc: David Miller <davem@davemloft.net>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Rojhalat Ibrahim <imr@rtschenk.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Mon, 27 Apr 2015 17:20:34 +0000 (13:20 -0400)]
netfilter; Add some missing default cases to switch statements in nft_reject.
This fixes:
====================
net/netfilter/nft_reject.c: In function ‘nft_reject_dump’:
net/netfilter/nft_reject.c:61:2: warning: enumeration value ‘NFT_REJECT_TCP_RST’ not handled in switch [-Wswitch]
switch (priv->type) {
^
net/netfilter/nft_reject.c:61:2: warning: enumeration value ‘NFT_REJECT_ICMPX_UNREACH’ not handled in switch [-Wswi\
tch]
net/netfilter/nft_reject_inet.c: In function ‘nft_reject_inet_dump’:
net/netfilter/nft_reject_inet.c:105:2: warning: enumeration value ‘NFT_REJECT_TCP_RST’ not handled in switch [-Wswi\
tch]
switch (priv->type) {
^
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michal Kazior [Tue, 21 Apr 2015 17:42:58 +0000 (20:42 +0300)]
ath10k: implement more versatile set_bitrate_mask
Until now only a single fixed tx rate or nss was
allowed to be set.
The patch attempts to improve this by allowing
most bitrate masks. The limitation is VHT MCS
rates cannot be expressed separately using
existing firmware interfaces and only the
following VHT MCS ranges are supported: none, 0-7,
0-8, and 0-9.
This keeps the old behaviour when requesting
single tx rate or single nss. The new bitrate mask
logic is only applied to other cases that would
return -EINVAL until now.
Depending on firmware revisions some combinations
may crash firmware so use with care, please.
This depends on "ath10k: don't use reassoc flag".
Without it key cache would effectively be
invalidated upon bitrate change leading to
communication being no longer possible.
These work:
iw wlan0 set bitrates legacy-5 6 12 ht-mcs-5 1 2 3
iw wlan0 set bitrates legacy-5 ht-mcs-5 7 8 9
iw wlan0 set bitrates legacy-5 24 ht-mcs-5 vht-mcs-5 1:0-9
These won't work:
iw wlan0 set bitrates legacy-5 ht-mcs-5 vht-mcs-5 1:0-5
iw wlan0 set bitrates vht-mcs-5 2:7-9
(note the invalid VHT MCS ranges)
Signed-off-by: Michal Kazior <michal.kazior@tieto.com>
Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
David S. Miller [Mon, 27 Apr 2015 03:25:13 +0000 (23:25 -0400)]
Merge branch 'ppp_mppe_desync'
Sylvain Rochet says:
====================
ppp: mppe: fixes MPPE desync on links which don't guarantee packet ordering
I am currently having an issue with PPP over L2TP (UDP) and MPPE in
stateless mode (default mode), UDP does not guarantee packet ordering so
we might get out of order packet. MPPE needs to be continuously synched
so we should drop late UDP packet.
I added a printk on the number of time we rekeyed in MPPE decompressor,
this is what we currently have if we receive a slightly out of order UDP
packet:
[
1731001.049206] mppe_decompress[1]: ccount 1559
[
1731001.049216] mppe_decompress[1]: rekeyed 1 times
[
1731001.049228] mppe_decompress[1]: ccount 1560
[
1731001.049232] mppe_decompress[1]: rekeyed 1 times
[
1731001.050170] mppe_decompress[1]: ccount 1562
[
1731001.050182] mppe_decompress[1]: rekeyed 2 times
[
1731001.050191] mppe_decompress[1]: ccount 1561
[
1731001.062576] mppe_decompress[1]: rekeyed 4095 times
^^^^
This is obviously wrong, we missed packet 1561 and we already rekeyed 2
times for 1562 we previously received, we can't recover the decryption
key we need for 1561, we should drop it instead of rekeying 4095 times.
This patch series drop any packet with are not within the 4096/2 forward
window.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Sylvain Rochet [Sun, 26 Apr 2015 18:40:53 +0000 (20:40 +0200)]
ppp: mppe: discard late packet in stateless mode
When PPP is used over a link which does not guarantee packet ordering,
we might get late MPPE packets. This is a problem because MPPE must be
kept synchronized and the current implementation does not drop them and
rekey 4095 times instead of 0, which is wrong.
In order to prevent rekeying about a whole count space times (~ 4095
times), drop packets which are not within the forward 4096/2 window and
increase sanity error counter.
Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Sylvain Rochet [Sun, 26 Apr 2015 18:40:52 +0000 (20:40 +0200)]
ppp: mppe: sanity error path rework
We are going to need sanity error path a little further, rework to be
able to use the sanity error path anywhere in decompressor.
Signed-off-by: Sylvain Rochet <sylvain.rochet@finsecur.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Matan Barak [Sun, 26 Apr 2015 12:55:57 +0000 (15:55 +0300)]
net/bonding: Make DRV macros private
The bonding modules currently defines four macros with
general names that pollute the global namespace:
DRV_VERSION
DRV_RELDATE
DRV_NAME
DRV_DESCRIPTION
Fixing that by defining a private bonding_priv.h
header files which includes those defines.
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Mon, 27 Apr 2015 00:59:10 +0000 (17:59 -0700)]
Linux 4.1-rc1
Andy Lutomirski [Sun, 26 Apr 2015 23:47:59 +0000 (16:47 -0700)]
x86_64, asm: Work around AMD SYSRET SS descriptor attribute issue
AMD CPUs don't reinitialize the SS descriptor on SYSRET, so SYSRET with
SS == 0 results in an invalid usermode state in which SS is apparently
equal to __USER_DS but causes #SS if used.
Work around the issue by setting SS to __KERNEL_DS __switch_to, thus
ensuring that SYSRET never happens with SS set to NULL.
This was exposed by a recent vDSO cleanup.
Fixes: e7d6eefaaa44 x86/vdso32/syscall.S: Do not load __USER32_DS to %ss
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Peter Anvin <hpa@zytor.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Denys Vlasenko <vda.linux@googlemail.com>
Cc: Brian Gerst <brgerst@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 27 Apr 2015 00:55:26 +0000 (17:55 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull intel drm fixes from Dave Airlie.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/i915: vlv: fix save/restore of GFX_MAX_REQ_COUNT reg
drm/i915: Workaround to avoid lite restore with HEAD==TAIL
drm/i915: cope with large i2c transfers
Linus Torvalds [Mon, 27 Apr 2015 00:47:46 +0000 (17:47 -0700)]
Merge git://git.infradead.org/intel-iommu
Pull intel iommu updates from David Woodhouse:
"This lays a little of the groundwork for upcoming Shared Virtual
Memory support — fixing some bogus #defines for capability bits and
adding the new ones, and starting to use the new wider page tables
where we can, in anticipation of actually filling in the new fields
therein.
It also allows graphics devices to be assigned to VM guests again.
This got broken in 3.17 by disallowing assignment of RMRR-afflicted
devices. Like USB, we do understand why there's an RMRR for graphics
devices — and unlike USB, it's actually sane. So we can make an
exception for graphics devices, just as we do USB controllers.
Finally, tone down the warning about the X2APIC_OPT_OUT bit, due to
persistent requests. X2APIC_OPT_OUT was added to the spec as a nasty
hack to allow broken BIOSes to forbid us from using X2APIC when they
do stupid and invasive things and would break if we did.
Someone noticed that since Windows doesn't have full IOMMU support for
DMA protection, setting the X2APIC_OPT_OUT bit made Windows avoid
initialising the IOMMU on the graphics unit altogether.
This means that it would be available for use in "driver mode", where
the IOMMU registers are made available through a BAR of the graphics
device and the graphics driver can do SVM all for itself.
So they started setting the X2APIC_OPT_OUT bit on *all* platforms with
SVM capabilities. And even the platforms which *might*, if the
planets had been aligned correctly, possibly have had SVM capability
but which in practice actually don't"
* git://git.infradead.org/intel-iommu:
iommu/vt-d: support extended root and context entries
iommu/vt-d: Add new extended capabilities from v2.3 VT-d specification
iommu/vt-d: Allow RMRR on graphics devices too
iommu/vt-d: Print x2apic opt out info instead of printing a warning
iommu/vt-d: kill bogus ecap_niotlb_iunits()
Linus Torvalds [Mon, 27 Apr 2015 00:44:09 +0000 (17:44 -0700)]
Merge branch 'i2c/for-next' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"This has a mixture of merge window cleanups and bugfixes"
* 'i2c/for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: st: add include for pinctrl
i2c: mux: use proper dev when removing "channel-X" symlinks
i2c: digicolor: remove duplicate include
i2c: Mark adapter devices with pm_runtime_no_callbacks
i2c: pca-platform: fix broken email address
i2c: mxs: fix broken email address
i2c: rk3x: report number of messages transmitted
Linus Torvalds [Mon, 27 Apr 2015 00:40:30 +0000 (17:40 -0700)]
Merge branch 'for-linus-4.1' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"Filipe hit two problems in my block group cache patches. We finalized
the fixes last week and ran through more tests"
* 'for-linus-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: prevent list corruption during free space cache processing
Btrfs: fix inode cache writeout
Dave Airlie [Mon, 27 Apr 2015 00:35:15 +0000 (10:35 +1000)]
Merge tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm-intel into drm-fixes
three fixes for i915.
* tag 'drm-intel-next-fixes-2015-04-25' of git://anongit.freedesktop.org/drm-intel:
drm/i915: vlv: fix save/restore of GFX_MAX_REQ_COUNT reg
drm/i915: Workaround to avoid lite restore with HEAD==TAIL
drm/i915: cope with large i2c transfers
Linus Torvalds [Mon, 27 Apr 2015 00:33:59 +0000 (17:33 -0700)]
Merge tag 'nfs-for-4.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client updates from Trond Myklebust:
"Another set of mainly bugfixes and a couple of cleanups. No new
functionality in this round.
Highlights include:
Stable patches:
- Fix a regression in /proc/self/mountstats
- Fix the pNFS flexfiles O_DIRECT support
- Fix high load average due to callback thread sleeping
Bugfixes:
- Various patches to fix the pNFS layoutcommit support
- Do not cache pNFS deviceids unless server notifications are enabled
- Fix a SUNRPC transport reconnection regression
- make debugfs file creation failure non-fatal in SUNRPC
- Another fix for circular directory warnings on NFSv4 "junctioned"
mountpoints
- Fix locking around NFSv4.2 fallocate() support
- Truncating NFSv4 file opens should also sync O_DIRECT writes
- Prevent infinite loop in rpcrdma_ep_create()
Features:
- Various improvements to the RDMA transport code's handling of
memory registration
- Various code cleanups"
* tag 'nfs-for-4.1-1' of git://git.linux-nfs.org/projects/trondmy/linux-nfs: (55 commits)
fs/nfs: fix new compiler warning about boolean in switch
nfs: Remove unneeded casts in nfs
NFS: Don't attempt to decode missing directory entries
Revert "nfs: replace nfs_add_stats with nfs_inc_stats when add one"
NFS: Rename idmap.c to nfs4idmap.c
NFS: Move nfs_idmap.h into fs/nfs/
NFS: Remove CONFIG_NFS_V4 checks from nfs_idmap.h
NFS: Add a stub for GETDEVICELIST
nfs: remove WARN_ON_ONCE from nfs_direct_good_bytes
nfs: fix DIO good bytes calculation
nfs: Fetch MOUNTED_ON_FILEID when updating an inode
sunrpc: make debugfs file creation failure non-fatal
nfs: fix high load average due to callback thread sleeping
NFS: Reduce time spent holding the i_mutex during fallocate()
NFS: Don't zap caches on fallocate()
xprtrdma: Make rpcrdma_{un}map_one() into inline functions
xprtrdma: Handle non-SEND completions via a callout
xprtrdma: Add "open" memreg op
xprtrdma: Add "destroy MRs" memreg op
xprtrdma: Add "reset MRs" memreg op
...
Linus Torvalds [Sun, 26 Apr 2015 22:48:49 +0000 (15:48 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull fourth vfs update from Al Viro:
"d_inode() annotations from David Howells (sat in for-next since before
the beginning of merge window) + four assorted fixes"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
RCU pathwalk breakage when running into a symlink overmounting something
fix I_DIO_WAKEUP definition
direct-io: only inc/dec inode->i_dio_count for file systems
fs/9p: fix readdir()
VFS: assorted d_backing_inode() annotations
VFS: fs/inode.c helpers: d_inode() annotations
VFS: fs/cachefiles: d_backing_inode() annotations
VFS: fs library helpers: d_inode() annotations
VFS: assorted weird filesystems: d_inode() annotations
VFS: normal filesystems (and lustre): d_inode() annotations
VFS: security/: d_inode() annotations
VFS: security/: d_backing_inode() annotations
VFS: net/: d_inode() annotations
VFS: net/unix: d_backing_inode() annotations
VFS: kernel/: d_inode() annotations
VFS: audit: d_backing_inode() annotations
VFS: Fix up some ->d_inode accesses in the chelsio driver
VFS: Cachefiles should perform fs modifications on the top layer only
VFS: AF_UNIX sockets should call mknod on the top layer only
Linus Torvalds [Sun, 26 Apr 2015 20:56:35 +0000 (13:56 -0700)]
Merge tag 'pm+acpi-4.1-rc1-2' of git://git./linux/kernel/git/rafael/linux-pm
Pull more power management and ACPI updates from Rafael Wysocki:
"These are fixes mostly (intel_pstate, ACPI core, ACPI EC driver,
cpupower tool), a new CPU ID for the Intel RAPL driver and one
intel_pstate driver improvement that didn't make it to my previous
pull requests due to timing.
Specifics:
- Fix a build warning in the intel_pstate driver showing up in
non-SMP builds (Borislav Petkov)
- Change one of the intel_pstate's P-state selection parameters for
Baytrail and Cherrytrail CPUs to significantly improve performance
at the cost of a small increase in energy consumption (Kristen
Carlson Accardi)
- Fix a NULL pointer dereference in the ACPI EC driver due to an
unsafe list walk in the query handler removal routine (Chris
Bainbridge)
- Get rid of a false-positive lockdep warning in the ACPI container
hot-remove code (Rafael J Wysocki)
- Prevent the ACPI device enumeration code from creating device
objects of a wrong type in some cases (Rafael J Wysocki)
- Add Skylake processors support to the Intel RAPL power capping
driver (Brian Bian)
- Drop the stale MAINTAINERS entry for the ACPI dock driver that is
regarded as part of the ACPI core and maintained along with it now
(Chao Yu)
- Fix cpupower tool breakage caused by a library API change in libpci
3.3.0 (Lucas Stach)"
* tag 'pm+acpi-4.1-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI / scan: Add a scan handler for PRP0001
ACPI / scan: Annotate physical_node_lock in acpi_scan_is_offline()
ACPI / EC: fix NULL pointer dereference in acpi_ec_remove_query_handler()
MAINTAINERS: remove maintainship entry of docking station driver
powercap / RAPL: Add support for Intel Skylake processors
cpufreq: intel_pstate: Fix an annoying !CONFIG_SMP warning
intel_pstate: Change the setpoint for Atom params
cpupower: fix breakage from libpci API change
Linus Torvalds [Sun, 26 Apr 2015 20:51:05 +0000 (13:51 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This push fixes a build problem with img-hash under non-standard
configurations and a serious regression with sha512_ssse3 which can
lead to boot failures"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: img-hash - CRYPTO_DEV_IMGTEC_HASH should depend on HAS_DMA
crypto: x86/sha512_ssse3 - fixup for asm function prototype change
Linus Torvalds [Sun, 26 Apr 2015 20:44:46 +0000 (13:44 -0700)]
Merge tag 'platform-drivers-x86-v4.1-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver updates from Darren Hart:
"This series includes significant updates to the toshiba_acpi driver
and the reintroduction of the dell-laptop keyboard backlight additions
I had to revert previously. Also included are various fixes for
typos, warnings, correctness, and minor bugs.
Specifics:
dell-laptop:
- add support for keyboard backlight.
toshiba_acpi:
- adaptive keyboard, hotkey, USB sleep and charge, and backlight
updates. Update sysfs documentation.
toshiba_bluetooth:
- fix enabling/disabling loop on recent devices
apple-gmux:
- lock iGP IO to protect from vgaarb changes
other:
- Fix typos, clear gcc warnings, clarify pr_* messages, correct
return types, update MAINTAINERS"
* tag 'platform-drivers-x86-v4.1-1' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86: (25 commits)
toshiba_acpi: Do not register vendor backlight when acpi_video bl is available
MAINTAINERS: Add me on list of Dell laptop drivers
platform: x86: dell-laptop: Add support for keyboard backlight
Documentation/ABI: Update sysfs-driver-toshiba_acpi entry
toshiba_acpi: Fix pr_* messages from USB Sleep Functions
toshiba_acpi: Update and fix USB Sleep and Charge modes
wmi: Use bool function return values of true/false not 1/0
toshiba_bluetooth: Fix enabling/disabling loop on recent devices
toshiba_bluetooth: Clean up *_add function and disable BT device at removal
toshiba_bluetooth: Add three new functions to the driver
toshiba_acpi: Fix the enabling of the Special Functions
toshiba_acpi: Use the Hotkey Event Type function for keymap choosing
toshiba_acpi: Add Hotkey Event Type function and definitions
x86/wmi: delete unused wmi_data_lock mutex causing gcc warning
apple-gmux: lock iGP IO to protect from vgaarb changes
MAINTAINERS: Add missing Toshiba devices and add myself as maintainer
toshiba_acpi: Update events in toshiba_acpi_notify
intel-oaktrail: Fix trivial typo in comment
thinkpad_acpi: off by one in adaptive_keyboard_hotkey_notify_hotkey()
thinkpad_acpi: signedness bugs getting current_mode
...
Linus Torvalds [Sun, 26 Apr 2015 20:36:02 +0000 (13:36 -0700)]
Merge tag 'chrome-for-linus' of git://git./linux/kernel/git/olof/chrome-platform
Pull chrome platform updates from Olof Johansson:
"Here's a set of updates to the Chrome OS platform drivers for this
merge window.
Main new things this cycle is:
- Driver changes to expose the lightbar to users. With this, you can
make your own blinkenlights on Chromebook Pixels.
- Changes in the way that the atmel_mxt trackpads are probed. The
laptop driver is trying to be smart and not instantiate the devices
that don't answer to probe. For the trackpad that can come up in
two modes (bootloader or regular), this gets complicated since the
driver already knows how to handle the two modes including the
actual addresses used. So now the laptop driver needs to know more
too, instantiating the regular address even if the bootloader one
is the probe that passed.
- mfd driver improvements by Javier Martines Canillas, and a few
bugfixes from him, kbuild and myself"
* tag 'chrome-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/olof/chrome-platform:
platform/chrome: chromeos_laptop - instantiate Atmel at primary address
platform/chrome: cros_ec_lpc - Depend on X86 || COMPILE_TEST
platform/chrome: cros_ec_lpc - Include linux/io.h header file
platform/chrome: fix platform_no_drv_owner.cocci warnings
platform/chrome: cros_ec_lightbar - fix duplicate const warning
platform/chrome: cros_ec_dev - fix Unknown escape '%' warning
platform/chrome: Expose Chrome OS Lightbar to users
platform/chrome: Create sysfs attributes for the ChromeOS EC
mfd: cros_ec: Instantiate ChromeOS EC character device
platform/chrome: Add Chrome OS EC userspace device interface
platform/chrome: Add cros_ec_lpc driver for x86 devices
mfd: cros_ec: Add char dev and virtual dev pointers
mfd: cros_ec: Use fixed size arrays to transfer data with the EC
Linus Torvalds [Sun, 26 Apr 2015 20:31:05 +0000 (13:31 -0700)]
Merge tag 'cris-for-4.1' of git://git./linux/kernel/git/jesper/cris
Pull arch/cris updates from Jesper Nilsson:
"Some much needed love for the CRIS-port.
There's a bunch of changes this time, giving the CRISv32 port a bit of
modern makeover with device-tree, irq domain and gpiolib support, and
more switchover to generic frameworks.
Some small fixes and removal of the theoretical SMP support brings up
the rear"
* tag 'cris-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/jesper/cris:
cris: fix integer overflow in ELF_ET_DYN_BASE
CRISv32: use GENERIC_SCHED_CLOCK
CRISv32: use MMIO clocksource
CRISv32: use generic clockevents
CRIS: use generic headers via Kbuild
CRIS: use generic cmpxchg.h
CRIS: use generic atomic.h
CRIS: use generic atomic bitops
CRISv10: remove redundant macros from system.h
CRIS: remove SMP code
CRISv32: don't enable irqs in INIT_THREAD
CRISv32: handle multiple signals
CRISv32: prevent bogus restarts on sigreturn
CRISv32: don't attempt syscall restart on irq exit
Add binding documentation for CRIS
CRIS: add Axis 88 board device tree
CRISv32: add device tree support
CRISv32: add irq domains support
CRIS: enable GPIOLIB
Linus Torvalds [Sun, 26 Apr 2015 20:23:15 +0000 (13:23 -0700)]
Merge tag 'powerpc-4.1-2' of git://git./linux/kernel/git/mpe/linux
Pull powerpc fixes from Michael Ellerman:
- fix for mm_dec_nr_pmds() from Scott.
- fixes for oopses seen with KVM + THP from Aneesh.
- build fixes from Aneesh & Shreyas.
* tag 'powerpc-4.1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
powerpc/mm: Fix build error with CONFIG_PPC_TRANSACTIONAL_MEM disabled
powerpc/kvm: Fix ppc64_defconfig + PPC_POWERNV=n build error
powerpc/mm/thp: Return pte address if we find trans_splitting.
powerpc/mm/thp: Make page table walk safe against thp split/collapse
KVM: PPC: Remove page table walk helpers
KVM: PPC: Use READ_ONCE when dereferencing pte_t pointer
powerpc/hugetlb: Call mm_dec_nr_pmds() in hugetlb_free_pmd_range()
Eric Dumazet [Sat, 25 Apr 2015 16:35:24 +0000 (09:35 -0700)]
net: rfs: fix crash in get_rps_cpus()
Commit
567e4b79731c ("net: rfs: add hash collision detection") had one
mistake :
RPS_NO_CPU is no longer the marker for invalid cpu in set_rps_cpu()
and get_rps_cpu(), as @next_cpu was the result of an AND with
rps_cpu_mask
This bug showed up on a host with 72 cpus :
next_cpu was 0x7f, and the code was trying to access percpu data of an
non existent cpu.
In a follow up patch, we might get rid of compares against nr_cpu_ids,
if we init the tables with 0. This is silly to test for a very unlikely
condition that exists only shortly after table initialization, as
we got rid of rps_reset_sock_flow() and similar functions that were
writing this RPS_NO_CPU magic value at flow dismantle : When table is
old enough, it never contains this value anymore.
Fixes: 567e4b79731c ("net: rfs: add hash collision detection")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <tom@herbertland.com>
Cc: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Andreas Oetken [Sat, 25 Apr 2015 16:07:52 +0000 (18:07 +0200)]
altera tse: add support for fixed-links.
Add support for fixed-links in configurations without PHY.
(e.g. connection to a switch, SGMII point to point, SFPs)
Check: Documentation/devicetree/bindings/net/fixed-link.txt.
Signed-off-by: Andreas Oetken <ennoerlangen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Linus Torvalds [Sun, 26 Apr 2015 20:06:22 +0000 (13:06 -0700)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull second batch of KVM changes from Paolo Bonzini:
"This mostly includes the PPC changes for 4.1, which this time cover
Book3S HV only (debugging aids, minor performance improvements and
some cleanups). But there are also bug fixes and small cleanups for
ARM, x86 and s390.
The task_migration_notifier revert and real fix is still pending
review, but I'll send it as soon as possible after -rc1"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (29 commits)
KVM: arm/arm64: check IRQ number on userland injection
KVM: arm: irqfd: fix value returned by kvm_irq_map_gsi
KVM: VMX: Preserve host CR4.MCE value while in guest mode.
KVM: PPC: Book3S HV: Use msgsnd for signalling threads on POWER8
KVM: PPC: Book3S HV: Translate kvmhv_commence_exit to C
KVM: PPC: Book3S HV: Streamline guest entry and exit
KVM: PPC: Book3S HV: Use bitmap of active threads rather than count
KVM: PPC: Book3S HV: Use decrementer to wake napping threads
KVM: PPC: Book3S HV: Don't wake thread with no vcpu on guest IPI
KVM: PPC: Book3S HV: Get rid of vcore nap_count and n_woken
KVM: PPC: Book3S HV: Move vcore preemption point up into kvmppc_run_vcpu
KVM: PPC: Book3S HV: Minor cleanups
KVM: PPC: Book3S HV: Simplify handling of VCPUs that need a VPA update
KVM: PPC: Book3S HV: Accumulate timing information for real-mode code
KVM: PPC: Book3S HV: Create debugfs file for each guest's HPT
KVM: PPC: Book3S HV: Add ICP real mode counters
KVM: PPC: Book3S HV: Move virtual mode ICP functions to real-mode
KVM: PPC: Book3S HV: Convert ICS mutex lock to spin lock
KVM: PPC: Book3S HV: Add guest->host real mode completion counters
KVM: PPC: Book3S HV: Add helpers for lock/unlock hpte
...
Alexey Khoroshilov [Sat, 25 Apr 2015 01:07:03 +0000 (04:07 +0300)]
pxa168: fix double deallocation of managed resources
Commit
43d3ddf87a57 ("net: pxa168_eth: add device tree support") starts
to use managed resources by adding devm_clk_get() and
devm_ioremap_resource(), but it leaves explicit iounmap() and clock_put()
in pxa168_eth_remove() and in failure handling code of pxa168_eth_probe().
As a result double free can happen.
The patch removes explicit resource deallocation. Also it converts
clk_disable() to clk_disable_unprepare() to make it symmetrical with
clk_prepare_enable().
Found by Linux Driver Verification project (linuxtesting.org).
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
Stephen Rothwell [Mon, 13 Apr 2015 02:48:27 +0000 (12:48 +1000)]
v4l: xilinx: fix for include file movement
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Eric Dumazet [Fri, 24 Apr 2015 23:05:01 +0000 (16:05 -0700)]
net: fix crash in build_skb()
When I added pfmemalloc support in build_skb(), I forgot netlink
was using build_skb() with a vmalloc() area.
In this patch I introduce __build_skb() for netlink use,
and build_skb() is a wrapper handling both skb->head_frag and
skb->pfmemalloc
This means netlink no longer has to hack skb->head_frag
[ 1567.700067] kernel BUG at arch/x86/mm/physaddr.c:26!
[ 1567.700067] invalid opcode: 0000 [#1] PREEMPT SMP KASAN
[ 1567.700067] Dumping ftrace buffer:
[ 1567.700067] (ftrace buffer empty)
[ 1567.700067] Modules linked in:
[ 1567.700067] CPU: 9 PID: 16186 Comm: trinity-c182 Not tainted
4.0.0-next-20150424-sasha-00037-g4796e21 #2167
[ 1567.700067] task:
ffff880127efb000 ti:
ffff880246770000 task.ti:
ffff880246770000
[ 1567.700067] RIP: __phys_addr (arch/x86/mm/physaddr.c:26 (discriminator 3))
[ 1567.700067] RSP: 0018:
ffff8802467779d8 EFLAGS:
00010202
[ 1567.700067] RAX:
000041000ed8e000 RBX:
ffffc9008ed8e000 RCX:
000000000000002c
[ 1567.700067] RDX:
0000000000000004 RSI:
0000000000000000 RDI:
ffffffffb3fd6049
[ 1567.700067] RBP:
ffff8802467779f8 R08:
0000000000000019 R09:
ffff8801d0168000
[ 1567.700067] R10:
ffff8801d01680c7 R11:
ffffed003a02d019 R12:
ffffc9000ed8e000
[ 1567.700067] R13:
0000000000000f40 R14:
0000000000001180 R15:
ffffc9000ed8e000
[ 1567.700067] FS:
00007f2a7da3f700(0000) GS:
ffff8801d1000000(0000) knlGS:
0000000000000000
[ 1567.700067] CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
[ 1567.700067] CR2:
0000000000738308 CR3:
000000022e329000 CR4:
00000000000007e0
[ 1567.700067] Stack:
[ 1567.700067]
ffffc9000ed8e000 ffff8801d0168000 ffffc9000ed8e000 ffff8801d0168000
[ 1567.700067]
ffff880246777a28 ffffffffad7c0a21 0000000000001080 ffff880246777c08
[ 1567.700067]
ffff88060d302e68 ffff880246777b58 ffff880246777b88 ffffffffad9a6821
[ 1567.700067] Call Trace:
[ 1567.700067] build_skb (include/linux/mm.h:508 net/core/skbuff.c:316)
[ 1567.700067] netlink_sendmsg (net/netlink/af_netlink.c:1633 net/netlink/af_netlink.c:2329)
[ 1567.774369] ? sched_clock_cpu (kernel/sched/clock.c:311)
[ 1567.774369] ? netlink_unicast (net/netlink/af_netlink.c:2273)
[ 1567.774369] ? netlink_unicast (net/netlink/af_netlink.c:2273)
[ 1567.774369] sock_sendmsg (net/socket.c:614 net/socket.c:623)
[ 1567.774369] sock_write_iter (net/socket.c:823)
[ 1567.774369] ? sock_sendmsg (net/socket.c:806)
[ 1567.774369] __vfs_write (fs/read_write.c:479 fs/read_write.c:491)
[ 1567.774369] ? get_lock_stats (kernel/locking/lockdep.c:249)
[ 1567.774369] ? default_llseek (fs/read_write.c:487)
[ 1567.774369] ? vtime_account_user (kernel/sched/cputime.c:701)
[ 1567.774369] ? rw_verify_area (fs/read_write.c:406 (discriminator 4))
[ 1567.774369] vfs_write (fs/read_write.c:539)
[ 1567.774369] SyS_write (fs/read_write.c:586 fs/read_write.c:577)
[ 1567.774369] ? SyS_read (fs/read_write.c:577)
[ 1567.774369] ? __this_cpu_preempt_check (lib/smp_processor_id.c:63)
[ 1567.774369] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2594 kernel/locking/lockdep.c:2636)
[ 1567.774369] ? trace_hardirqs_on_thunk (arch/x86/lib/thunk_64.S:42)
[ 1567.774369] system_call_fastpath (arch/x86/kernel/entry_64.S:261)
Fixes: 79930f5892e ("net: do not deplete pfmemalloc reserve")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Chee Nouk Phoon [Fri, 24 Apr 2015 07:32:07 +0000 (02:32 -0500)]
net: eth: altera: Resolve false errors from MSGDMA to TSE
This patch resolves false errors from MSGDMA in TX mSGDMA MM to ST
mode, and is a continuation of the patch recently submitted by Andrea
Oetken. The MSGDMA had a logic bug that masked detection of this issue
prior to Quartus 14.1/Build 164. When the MSGDMA logic bug was addressed
in Quartus 14.1/Build 164, the driver problem was exposed.
The problem is corrected by making sure MSGDMA_DESC_CTL_TR_ERR_IRQ is not
set for any of the transmit DMA descriptors, and only used for receive
descriptors.
Fixes: 71cd26e altera tse: Error-Bit on tx-avalon-stream always set.
Signed-off-by: Chee Nouk Phoon <cnphoon@altera.com>
Signed-off-by: Vince Bridgers <vbridger@opensource.altera.com>a
Cc: Andreas Oetken <ennoerlangen@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Ellerman [Fri, 24 Apr 2015 05:52:32 +0000 (15:52 +1000)]
ehea: Fix memory hook reference counting crashes
The recent commit to only register the EHEA memory hotplug hooks on
adapter probe has a few problems.
Firstly the reference counting is wrong for multiple adapters, in that
the hooks are registered multiple times. Secondly the check in the tear
down path is backward. Finally the error path doesn't decrement the
count.
The multiple registration of the hooks is the biggest problem, as it
leads to oopses when the system is rebooted, and/or errors during memory
hotplug, eg:
$ ./mem-on-off-test.sh -r 2
...
ehea: memory is going offline
ehea: LPAR memory changed - re-initializing driver
ehea: re-initializing driver complete
ehea: memory is going offline
ehea: LPAR memory changed - re-initializing driver
ehea: opcode=26c ret=
fffffffffffffffc arg1=
8000000003000003 arg2=0 arg3=
700000060000d600 arg4=
3fded0000 arg5=200 arg6=0 arg7=0
ehea: register_rpage_mr failed
ehea: registering mr failed
ehea: register MR failed - driver inoperable!
ehea: memory is going offline
Fixes: aa183323312d ("ehea: Register memory hotplug, reboot and crash hooks on adapter probe")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Gavin Shan [Fri, 24 Apr 2015 05:22:23 +0000 (15:22 +1000)]
net/tg3: Release IRQs on permanent error
When having permanent EEH error, the PCI device will be removed
from the system. For this case, we shouldn't set pcierr_recovery
to true wrongly, which blocks the driver to release the allocated
interrupts and their handlers. Eventually, we can't disable MSI
or MSIx successfully because of the MSI or MSIx interrupts still
have associated interrupt actions, which is turned into following
stack dump.
Oops: Exception in kernel mode, sig: 5 [#1]
:
[
c0000000003b76a8] .free_msi_irqs+0x80/0x1a0 (unreliable)
[
c00000000039f388] .pci_remove_bus_device+0x98/0x110
[
c0000000000790f4] .pcibios_remove_pci_devices+0x9c/0x128
[
c000000000077b98] .handle_eeh_events+0x2d8/0x4b0
[
c0000000000782d0] .eeh_event_handler+0x130/0x1c0
[
c000000000022bd4] .kernel_thread+0x54/0x70
Signed-off-by: Gavin Shan <gwshan@linux.vnet.ibm.com>
Acked-by: Prashant Sreedharan <prashant@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Dmitry Torokhov [Tue, 14 Apr 2015 20:50:09 +0000 (13:50 -0700)]
platform/chrome: chromeos_laptop - instantiate Atmel at primary address
The new Atmel MXT driver expects i2c client's address contain the
primary (main address) of the chip, and calculates the expected
bootloader address form the primary address. Unfortunately chrome_laptop
does probe the devices and if touchpad (or touchscreen, or both) comes
up in bootloader mode the i2c device gets instantiated with the
bootloader address which confuses the driver.
To work around this issue let's probe the primary address first. If the
device is not detected at the primary address we'll probe alternative
addresses as "dummy" devices. If any of them are found, destroy the
dummy client and instantiate client with proper name at primary address
still.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Olof Johansson <olof@lixom.net>
Al Viro [Fri, 24 Apr 2015 19:47:07 +0000 (15:47 -0400)]
RCU pathwalk breakage when running into a symlink overmounting something
Calling unlazy_walk() in walk_component() and do_last() when we find
a symlink that needs to be followed doesn't acquire a reference to vfsmount.
That's fine when the symlink is on the same vfsmount as the parent directory
(which is almost always the case), but it's not always true - one _can_
manage to bind a symlink on top of something. And in such cases we end up
with excessive mntput().
Cc: stable@vger.kernel.org # since 2.6.39
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Eric Sandeen [Thu, 16 Apr 2015 20:04:56 +0000 (15:04 -0500)]
fix I_DIO_WAKEUP definition
I_DIO_WAKEUP is never directly used, but fix it up anyway.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Jens Axboe [Wed, 15 Apr 2015 23:05:48 +0000 (17:05 -0600)]
direct-io: only inc/dec inode->i_dio_count for file systems
do_blockdev_direct_IO() increments and decrements the inode
->i_dio_count for each IO operation. It does this to protect against
truncate of a file. Block devices don't need this sort of protection.
For a capable multiqueue setup, this atomic int is the only shared
state between applications accessing the device for O_DIRECT, and it
presents a scaling wall for that. In my testing, as much as 30% of
system time is spent incrementing and decrementing this value. A mixed
read/write workload improved from ~2.5M IOPS to ~9.6M IOPS, with
better latencies too. Before:
clat percentiles (usec):
| 1.00th=[ 33], 5.00th=[ 34], 10.00th=[ 34], 20.00th=[ 34],
| 30.00th=[ 34], 40.00th=[ 34], 50.00th=[ 35], 60.00th=[ 35],
| 70.00th=[ 35], 80.00th=[ 35], 90.00th=[ 37], 95.00th=[ 80],
| 99.00th=[ 98], 99.50th=[ 151], 99.90th=[ 155], 99.95th=[ 155],
| 99.99th=[ 165]
After:
clat percentiles (usec):
| 1.00th=[ 95], 5.00th=[ 108], 10.00th=[ 129], 20.00th=[ 149],
| 30.00th=[ 155], 40.00th=[ 161], 50.00th=[ 167], 60.00th=[ 171],
| 70.00th=[ 177], 80.00th=[ 185], 90.00th=[ 201], 95.00th=[ 270],
| 99.00th=[ 390], 99.50th=[ 398], 99.90th=[ 418], 99.95th=[ 422],
| 99.99th=[ 438]
In other setups, Robert Elliott reported seeing good performance
improvements:
https://lkml.org/lkml/2015/4/3/557
The more applications accessing the device, the worse it gets.
Add a new direct-io flags, DIO_SKIP_DIO_COUNT, which tells
do_blockdev_direct_IO() that it need not worry about incrementing
or decrementing the inode i_dio_count for this caller.
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Elliott, Robert (Server Storage) <elliott@hp.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Johannes Berg [Wed, 22 Apr 2015 09:55:14 +0000 (11:55 +0200)]
fs/9p: fix readdir()
Al Viro's IOV changes broke 9p readdir() because the new code
didn't abort the read when it returned nothing. The original
code checked if the combined error/length was <= 0 but in the
new code that accidentally got changed to just an error check.
Add back the return from the function when nothing is read.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Fixes: e1200fe68f20 ("9p: switch p9_client_read() to passing struct iov_iter *")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Chris Mason [Fri, 24 Apr 2015 18:00:00 +0000 (11:00 -0700)]
Btrfs: prevent list corruption during free space cache processing
__btrfs_write_out_cache is holding the ctl->tree_lock while it prepares
a list of bitmaps to record in the free space cache. It was dropping
the lock while it worked on other components, which made a window for
free_bitmap() to free the bitmap struct without removing it from the
list.
This changes things to hold the lock the whole time, and also makes sure
we hold the lock during enospc cleanup.
Reported-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Hans de Goede [Tue, 21 Apr 2015 10:01:32 +0000 (12:01 +0200)]
toshiba_acpi: Do not register vendor backlight when acpi_video bl is available
commit
a39f46df33c6 ("toshiba_acpi: Fix regression caused by backlight extra
check code") causes the backlight to no longer work on the Toshiba Z30,
reverting that commit fixes this but restores the original issue fixed
by that commit.
Looking at the toshiba_acpi backlight code for a fix for this I noticed that
the toshiba code is the only code under platform/x86 which unconditionally
registers a vendor acpi backlight interface, without checking for acpi_video
backlight support first.
This commit adds the necessary checks bringing toshiba_acpi in line with the
other drivers, and fixing the Z30 regression without needing to revert the
commit causing it.
Chances are that there will be some Toshiba models which have a non working
acpi-video implementation while the toshiba vendor backlight interface does
work, this commit adds an empty dmi_id table where such systems can be added,
this is identical to how other drivers handle such systems.
BugLink: https://bugzilla.redhat.com/show_bug.cgi?id=1206036
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=86521
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-and-tested-by: Azael Avalos <coproscefalo@gmail.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
Linus Torvalds [Fri, 24 Apr 2015 17:31:32 +0000 (10:31 -0700)]
Merge tag 'sound-fix-4.1-rc1' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Here are a few fixes that have been pending since the previous pull
request: a regression fix for HD-audio multiple SPDIF / HDMI devices,
several ALC256 codec fixes, a couple of i915 HDMI audio fixes, and
various small fixes.
Nothing exciting, just boring, but things good to have"
* tag 'sound-fix-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda - fix headset mic detection problem for one more machine
ALSA: hda/realtek - Fix Headphone Mic doesn't recording for ALC256
ALSA: hda - fix "num_steps = 0" error on ALC256
ALSA: usb-audio: Fix audio output on Roland SC-D70 sound module
ALSA: hda - add AZX_DCAPS_I915_POWERWELL to Baytrail
ALSA: hda - only sync BCLK to the display clock for Haswell & Broadwell
ALSA: hda - Mute headphone pin on suspend on XPS13 9333
sound/oss: fix deadlock in sequencer_ioctl(SNDCTL_SEQ_OUTOFBAND)
ALSA: asound.h - use SNDRV_CTL_ELEM_ID_NAME_MAXLEN
ALSA: hda - potential (but unlikely) uninitialized variable
ALSA: hda - Fix regression for slave SPDIF setups
ALSA: intel8x0: Check pci_iomap() success for DEVICE_ALI
ALSA: hda - simplify azx_has_pm_runtime
Linus Torvalds [Fri, 24 Apr 2015 17:22:09 +0000 (10:22 -0700)]
Merge branch 'for-next' of git://git./linux/kernel/git/nab/target-pending
Pull SCSI target updates from Nicholas Bellinger:
"Lots of activity in target land the last months.
The highlights include:
- Convert fabric drivers tree-wide to target_register_template() (hch
+ bart)
- iser-target hardening fixes + v1.0 improvements (sagi)
- Convert iscsi_thread_set usage to kthread.h + kill
iscsi_target_tq.c (sagi + nab)
- Add support for T10-PI WRITE_STRIP + READ_INSERT operation (mkp +
sagi + nab)
- DIF fixes for CONFIG_DEBUG_SG=y + UNMAP file emulation (akinobu +
sagi + mkp)
- Extended TCMU ABI v2 for future BIDI + DIF support (andy + ilias)
- Fix COMPARE_AND_WRITE handling for NO_ALLLOC drivers (hch + nab)
Thanks to everyone who contributed this round with new features,
bug-reports, fixes, cleanups and improvements.
Looking forward, it's currently shaping up to be a busy v4.2 as well"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (69 commits)
target: Put TCMU under a new config option
target: Version 2 of TCMU ABI
target: fix tcm_mod_builder.py
target/file: Fix UNMAP with DIF protection support
target/file: Fix SG table for prot_buf initialization
target/file: Fix BUG() when CONFIG_DEBUG_SG=y and DIF protection enabled
target: Make core_tmr_abort_task() skip TMFs
target/sbc: Update sbc_dif_generate pr_debug output
target/sbc: Make internal DIF emulation honor ->prot_checks
target/sbc: Return INVALID_CDB_FIELD if DIF + sess_prot_type disabled
target: Ensure sess_prot_type is saved across session restart
target/rd: Don't pass incomplete scatterlist entries to sbc_dif_verify_*
target: Remove the unused flag SCF_ACK_KREF
target: Fix two sparse warnings
target: Fix COMPARE_AND_WRITE with SG_TO_MEM_NOALLOC handling
target: simplify the target template registration API
target: simplify target_xcopy_init_pt_lun
target: remove the unused SCF_CMD_XCOPY_PASSTHROUGH flag
target/rd: reduce code duplication in rd_execute_rw()
tcm_loop: fixup tpgt string to integer conversion
...
Linus Torvalds [Fri, 24 Apr 2015 17:11:24 +0000 (10:11 -0700)]
Merge tag 'pwm/for-4.1-rc1' of git://git./linux/kernel/git/thierry.reding/linux-pwm
Pull pwm changes from Thierry Reding:
"Not much has been happening in PWM land lately, so this contains
mostly minor fixes that didn't seem urgent enough for a late
pull-request last cycle"
* tag 'pwm/for-4.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: Remove __init initializer for pwm_add_table()
pwm: samsung: Fix output race on disabling
pwm: mxs: Fix period divider computation
pwm: atmel-hlcdc: Add errata handling for sama5d4
pwm: pca9685: Constify struct regmap_config
pwm: imx-pwm: add explicit compatible strings and required clock properties
Linus Torvalds [Fri, 24 Apr 2015 17:05:39 +0000 (10:05 -0700)]
Merge tag 'dma-buf-for-4.1' of git://git./linux/kernel/git/sumits/dma-buf
Pull dma-buf updates from Sumit Semwal:
"Minor cleanup only; this could've gone in for the 4.0 merge window,
but for a copy-paste stupidity from me.
It has been in the for-next since then, and no issues reported.
- cleanup of dma_buf_export()
- correction of copy-paste stupidity while doing the cleanup"
* tag 'dma-buf-for-4.1' of git://git.kernel.org/pub/scm/linux/kernel/git/sumits/dma-buf:
staging: android: ion: fix wrong init of dma_buf_export_info
dma-buf: cleanup dma_buf_export() to make it easily extensible