This reverts commit 8eca1fb692.
Felix notes that this broke regulatory, leaving channel 12 open for AP
operation in the US regulatory domain where it isn't permitted.
Link: http://mid.gmane.org/53A6C0FF.9090104@openwrt.org
Reported-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Allow send frames using monitor interface
when DFS chandef and we pass CAC (beaconing
allowed).
This fix problem when old kernel and new backports used,
in such case hostapd create/use also monitor interface.
Before this patch all frames hostapd send using monitor
iface were dropped when AP was configured on DFS channel.
Signed-off-by: Janusz Dziedzic <janusz.dziedzic@tieto.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Currently, cfg80211 tries to implement ethtool, but that doesn't
really scale well, with all the different operations. Make the
lower-level driver responsible for it, which currently only has
an effect on mac80211. It will similarly not scale well at that
level though, since mac80211 also has many drivers.
To cleanly implement this in mac80211, introduce a new file and
move some code to appropriate places.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Antonio Ospite <ao2@ao2.it>
Cc: Luis Carlos Cobo <luisca@cozybit.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The mesh_plink code is doing some interesting things with the
ignore_plink_timer flag. It seems the original intent was to
handle this race:
cpu 0 cpu 1
----- -----
start timer handler for state X
acquire sta_lock
change state from X to Y
mod_timer() / del_timer()
release sta_lock
acquire sta_lock
execute state Y timer too soon
However, using the mod_timer()/del_timer() return values to
detect these cases is broken. As a result, timers get ignored
unnecessarily, and stations can get stuck in the peering state
machine.
Instead, we can detect the case by looking at the timer expiration.
In the case of del_timer, just ignore the timers in the following
(LISTEN/ESTAB) states since they won't have timers anyway.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
It is currently possible to have a race due to the station PS
unblock work like this:
* station goes to sleep with frames buffered in the driver
* driver blocks wakeup
* station wakes up again
* driver flushes/returns frames, and unblocks, which schedules
the unblock work
* unblock work starts to run, and checks that the station is
awake (i.e. that the WLAN_STA_PS_STA flag isn't set)
* we process a received frame with PM=1, setting the flag again
* ieee80211_sta_ps_deliver_wakeup() runs, delivering all frames
to the driver, and then clearing the WLAN_STA_PS_DRIVER and
WLAN_STA_PS_STA flags
In this scenario, mac80211 will think that the station is awake,
while it really is asleep, and any TX'ed frames should be filtered
by the device (it will know that the station is sleeping) but then
passed to mac80211 again, which will not buffer it either as it
thinks the station is awake, and eventually the packets will be
dropped.
Fix this by moving the clearing of the flags to exactly where we
learn about the situation. This creates a problem of reordering,
so introduce another flag indicating that delivery is being done,
this new flag also queues frames and is cleared only while the
spinlock is held (which the queuing code also holds) so that any
concurrent delivery/TX is handled correctly.
Reported-by: Andrei Otcheretianski <andrei.otcheretianski@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Minstrel has long since proven its worth.
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
The following check in rbd_img_obj_request_submit()
rbd_dev->parent_overlap <= obj_request->img_offset
allows the fall through to the non-layered write case even if both
parent_overlap and obj_request->img_offset belong to the same RADOS
object. This leads to data corruption, because the area to the left of
parent_overlap ends up unconditionally zero-filled instead of being
populated with parent data. Suppose we want to write 1M to offset 6M
of image bar, which is a clone of foo@snap; object_size is 4M,
parent_overlap is 5M:
rbd_data.<id>.0000000000000001
---------------------|----------------------|------------
| should be copyup'ed | should be zeroed out | write ...
---------------------|----------------------|------------
4M 5M 6M
parent_overlap obj_request->img_offset
4..5M should be copyup'ed from foo, yet it is zero-filled, just like
5..6M is.
Given that the only striping mode kernel client currently supports is
chunking (i.e. stripe_unit == object_size, stripe_count == 1), round
parent_overlap up to the next object boundary for the purposes of the
overlap check.
Cc: stable@vger.kernel.org # 3.10+
Signed-off-by: Ilya Dryomov <ilya.dryomov@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
After skb allocation and call to ieee80211_wep_encrypt in ieee80211_send_auth
the flow fails with a warning in ieee80211_wep_add_iv on verification of
available head/tailroom needed for WEP_IV and WEP_ICV.
Signed-off-by: Max Stepanov <Max.Stepanov@intel.com>
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Jesse noticed that the punit communication needed to query the VLV power
well status can cause substantial delays. Since we can query the state
frequently, for example during I2C transfers, maintain a cached version
of the HW state to get rid of this delay.
This fixes at least one reported regression where boot time increased by
~4 seconds due to frequent power well state queries on VLV during eDP
EDID read.
This regression has been introduced in
commit bb4932c4f1
Author: Imre Deak <imre.deak@intel.com>
Date: Mon Apr 14 20:24:33 2014 +0300
drm/i915: vlv: check port power domain instead of only D0 for eDP VDD on
Reported-by: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Now that we have kvfree, use it in vhost-scsi instead of
the open-coded version.
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Commit 23cc5a991c ("vhost-net: extend device allocation to vmalloc")
added another open-coded version of kvfree (which is available since
v3.15-rc5), nuke it.
Signed-off-by: Romain Francoise <romain@orebokech.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Fixes commit 3be2a49e5c ("of: provide a binding for fixed link PHYs")
Fix the parsing of the new fixed link dts bindings for duplex,
pause, and asym_pause by using the correct device node pointer.
Signed-off-by: Richard Retanubun <rretanubun.work@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Varka Bhadram says:
====================
Driver for TI CC2520 Radio
changes since v6:
- proper releasing of resources
- changed pr_debug() to dev_dbg()
- removed unwanted header file
- changed is_tx type to bool
changes since v5:
- added saddr and panc_changed functionality
- rework on lqi field
- improvements in checkings for reception
- modification in debug messages
changes since v4:
- feature to write into cc2520 RAM
- added h/w address filtering
changes since v3:
- drop the unused varible
changes since v2:
- drop spi mode dt binding
changes since v1:
- improvement in gpio setup
- changed len pointer to len variable
changes for v1:
- improvements in the locking mechanism in Tx and SFD ISR
- proper checkings for GPIO pins
- avoids the memory leak for priv
- used devm_* API's
- moved the code from header file to .c file
- removed cc2520_unregister()
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the driver support for the cc2520 radio.
Driver support:
- Tx and Rx of IEEE-802.15.4 packets
- Energy Detection on channel
- Setting the Channel for the radio. [b/w 11 - 26 channels]
- Start and Stop the radio
- h/w address filtering
Signed-off-by: Varka Bhadram <varkab@cdac.in>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anish Bhatt says:
====================
cxgb4 : Add DCBx support to Chelsio cxgb4 driver
This patchset adds support for DCBx via dcbnl_ops to the cxgb4
driver. This should enable cxgb4 to work with open-lldp and the
like. The last patch only updates copyright year.
v2 : move inclusion of struct port_dcb_info to the same patch as where it is defined.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes the fallocate bug like below. (See xfstests/255)
In fallocate(fd, 0, 20480),
expand_inode_data processes
for (index = pg_start; index <= pg_end; index++) {
f2fs_reserve_block();
...
}
So, even though fallocate requests 20480, 5 blocks, f2fs allocates 6 blocks
including pg_end.
So, this patch adds one condition to avoid block allocation.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Previous get_block in f2fs didn't report the newly allocated region which has
NEW_ADDR.
For reader, it should not report, but fiemap needs this.
So, this patch introduces two get_block sharing core function.
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Commit 8eba0eefae ("at86rf230: remove irq_type in
request_irq") removed the trigger configuration when requesting an irq,
and instead relied on the interrupt trigger to be properly configured
already. This does not seem to be an assumption that can be safely made,
since boards disable all interrupt triggers on boot.
On these boards, force the irq to trigger on rising edge, which is also
the default for the chip.
Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
The following commit has removed ARCH_HAS_CPUFREQ config:
Commit: e49d9b375628e67c9a718f4befaa8e45e5fad21b
Subject: ARM: Remove ARCH_HAS_CPUFREQ config option
This patch removes the code that is using ARCH_HAS_CPUFREQ
in mach-shmobile.
Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
drivers/net/phy/at803x.c:196:26-32: ERROR: application of sizeof to pointer
sizeof when applied to a pointer typed expression gives the size of
the pointer
Generated by: scripts/coccinelle/misc/noderef.cocci
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Acked-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 5ea3b1b2f8 'cma: add placement specifier for "cma=" kernel parameter'
adds a new 'fixed' parameter to dma_contiguous_reserve_area(). Update
rcar_gen2_reserve() accordingly.
This fixes the following compilation error:
arch/arm/mach-shmobile/setup-rcar-gen2.c: In function ‘rcar_gen2_reserve’:
arch/arm/mach-shmobile/setup-rcar-gen2.c:182:10: error: too few arguments to function ‘dma_contiguous_reserve_area’
Signed-off-by: Vincent Stehlé <vincent.stehle@laposte.net>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
The time comparsion functions require arguments of type unsigned long
instead of (signed) long.
Signed-off-by: Manuel Schölling <manuel.schoelling@gmx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Single ported VF are currently not supported on configurations where
one or both ports are IB. When we hit this case, the relevant flow in
the driver didn't return error and jumped to the wrong label. Fix that.
Fixes: dd41cc3 ('net/mlx4: Adapt num_vfs/probed_vf params for single port VF')
Reported-by: Shirley Ma <shirley.ma@oracle.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
It now takes up to 60 seconds to detect cable (un)plug on ADMtek Comet chips.
That's too slow and might cause people to think that it doesn't work at all.
Poll link status every 2 seconds instead of 60 for ADMtek Comet chips.
That should be fast enough while not stressing the system too much.
Tested with ADMtek AN983B.
Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit b5097e956a.
The original commit is buggy, we do use the registration functions
at runtime, for instance when loading IO schedulers through sysfs.
Reported-by: Damien Wyart <damien.wyart@gmail.com>
Hello,
So, this patch should do. Joe, Vivek, can one of you guys please
verify that the oops goes away with this patch?
Jens, the original thread can be read at
http://thread.gmane.org/gmane.linux.kernel/1720729
The fix converts blkg->refcnt from int to atomic_t. It does some
overhead but it should be minute compared to everything else which is
going on and the involved cacheline bouncing, so I think it's highly
unlikely to cause any noticeable difference. Also, the refcnt in
question should be converted to a perpcu_ref for blk-mq anyway, so the
atomic_t is likely to go away pretty soon anyway.
Thanks.
------- 8< -------
__blkg_release_rcu() may be invoked after the associated request_queue
is released with a RCU grace period inbetween. As such, the function
and callbacks invoked from it must not dereference the associated
request_queue. This is clearly indicated in the comment above the
function.
Unfortunately, while trying to fix a different issue, 2a4fd070ee
("blkcg: move bulk of blkcg_gq release operations to the RCU
callback") ignored this and added [un]locking of @blkg->q->queue_lock
to __blkg_release_rcu(). This of course can cause oops as the
request_queue may be long gone by the time this code gets executed.
general protection fault: 0000 [#1] SMP
CPU: 21 PID: 30 Comm: rcuos/21 Not tainted 3.15.0 #1
Hardware name: Stratus ftServer 6400/G7LAZ, BIOS BIOS Version 6.3:57 12/25/2013
task: ffff880854021de0 ti: ffff88085403c000 task.ti: ffff88085403c000
RIP: 0010:[<ffffffff8162e9e5>] [<ffffffff8162e9e5>] _raw_spin_lock_irq+0x15/0x60
RSP: 0018:ffff88085403fdf0 EFLAGS: 00010086
RAX: 0000000000020000 RBX: 0000000000000010 RCX: 0000000000000000
RDX: 000060ef80008248 RSI: 0000000000000286 RDI: 6b6b6b6b6b6b6b6b
RBP: ffff88085403fdf0 R08: 0000000000000286 R09: 0000000000009f39
R10: 0000000000020001 R11: 0000000000020001 R12: ffff88103c17a130
R13: ffff88103c17a080 R14: 0000000000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88107fca0000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000006e5ab8 CR3: 000000000193d000 CR4: 00000000000407e0
Stack:
ffff88085403fe18 ffffffff812cbfc2 ffff88103c17a130 0000000000000000
ffff88103c17a130 ffff88085403fec0 ffffffff810d1d28 ffff880854021de0
ffff880854021de0 ffff88107fcaec58 ffff88085403fe80 ffff88107fcaec30
Call Trace:
[<ffffffff812cbfc2>] __blkg_release_rcu+0x72/0x150
[<ffffffff810d1d28>] rcu_nocb_kthread+0x1e8/0x300
[<ffffffff81091d81>] kthread+0xe1/0x100
[<ffffffff8163813c>] ret_from_fork+0x7c/0xb0
Code: ff 47 04 48 8b 7d 08 be 00 02 00 00 e8 55 48 a4 ff 5d c3 0f 1f 00 66 66 66 66 90 55 48 89 e5
+fa 66 66 90 66 66 90 b8 00 00 02 00 <f0> 0f c1 07 89 c2 c1 ea 10 66 39 c2 75 02 5d c3 83 e2 fe 0f
+b7
RIP [<ffffffff8162e9e5>] _raw_spin_lock_irq+0x15/0x60
RSP <ffff88085403fdf0>
The request_queue locking was added because blkcg_gq->refcnt is an int
protected with the queue lock and __blkg_release_rcu() needs to put
the parent. Let's fix it by making blkcg_gq->refcnt an atomic_t and
dropping queue locking in the function.
Given the general heavy weight of the current request_queue and blkcg
operations, this is unlikely to cause any noticeable overhead.
Moreover, blkcg_gq->refcnt is likely to be converted to percpu_ref in
the near future, so whatever (most likely negligible) overhead it may
add is temporary.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Acked-by: Vivek Goyal <vgoyal@redhat.com>
Link: http://lkml.kernel.org/g/alpine.DEB.2.02.1406081816540.17948@jlaw-desktop.mno.stratus.com
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
- use WFI macro in platform_do_lowpower because exynos cpuhotplug
includes a hardcoded WFI instruction and it causes compile error
in Thumb-2 mode.
- fix GIC reg sizes for exynos4 SoCs
- remove reset timer counter value during boot and resume for mct
to fix a big jump in printk timestamps
- fix pm code to check cortex-A9 for another exynos SoCs
- don't rely on firmware's secondary_cpu_start for mcpm
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Merge tag 'samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into fixes
Merge Samsung fixes for 3.16 from Kukjin Kim:
- use WFI macro in platform_do_lowpower because exynos cpuhotplug
includes a hardcoded WFI instruction and it causes compile error
in Thumb-2 mode.
- fix GIC reg sizes for exynos4 SoCs
- remove reset timer counter value during boot and resume for mct
to fix a big jump in printk timestamps
- fix pm code to check cortex-A9 for another exynos SoCs
- don't rely on firmware's secondary_cpu_start for mcpm
* tag 'samsung-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
ARM: EXYNOS: Don't rely on firmware's secondary_cpu_start for mcpm
ARM: EXYNOS: fix pm code to check for cortex A9 rather than the SoC
clocksource: exynos_mct: Don't reset the counter during boot and resume
ARM: dts: fix reg sizes of GIC for exynos4
ARM: EXYNOS: Use wfi macro in platform_do_lowpower
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
If probe fails after IOMMU is attached, we need to detach in order to
clean up properly. Before this change, IOMMU faults would occur if the
probe failed (-EPROBE_DEFER).
Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
use mm.h definition
Cc: David Airlie <airlied@linux.ie>
Cc: Rob Clark <robdclark@gmail.com>
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The clock driver usually complains when a clock is being prepared
before setting its rate. It is the case here for "core_clk" which
needs to be set at 19.2 MHz before we attempt a prepare_enable().
Signed-off-by: Stephane Viau <sviau@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@gmail.com>
The C99 specification states in section 6.11.5:
The placement of a storage-class specifier other than at the beginning
of the declaration specifiers in a declaration is an obsolescent
feature.
Signed-off-by: Peter Griffin <peter.griffin@linaro.org>
Cc: David Airlie <airlied@linux.ie>
Cc: dri-devel@lists.freedesktop.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Rob Clark <robdclark@gmail.com>
This patch helps to avoid the following build issue:
drivers/gpu/drm/msm/msm_fbdev.c:108:2: error: passing argument 3 of 'msm_gem_get_iova_locked' from incompatible pointer type [-Werror]
msm_gem_get_iova_locked(fbdev->bo, 0, &paddr);
^
In file included from drivers/gpu/drm/msm/msm_fbdev.c:18:0:
drivers/gpu/drm/msm/msm_drv.h:153:5: note: expected 'uint32_t *' but argument is of type 'dma_addr_t *'
int msm_gem_get_iova_locked(struct drm_gem_object *obj, int id,
^
Signed-off-by: Matwey V. Kornilov <matwey@sai.msu.ru>
Signed-off-by: Rob Clark <robdclark@gmail.com>
Fixed coding style issues of "Missing Blank line after declaration"
Signed-off-by: Shahina Shaik <sharab.shaik@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Fixed Coding style issues of lines over 80 characters.
Signed-off-by: Shahina Shaik <sharab.shaik@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Fixed a brace coding style issue in the tlv320aic32x4.c
Signed-off-by: Shahina Shaik <sharab.shaik@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
Tis will be used to add table based support for pcm front ends in subsequent
patches
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
