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Add __init attribute on a function that is only called from other __init
functions and that is not inlined, at least with gcc version 4.8.4 on an
x86 machine with allyesconfig. Currently, the function is put in the
.text.unlikely segment. Declaring it as __init will cause it to be put in
the .init.text and to disappear after initialization.
The result of objdump -x on the function before the change is as follows:
0000000000000086 l F .text.unlikely 0000000000000739 thermal_of_build_thermal_zone
And after the change it is as follows:
0000000000000000 l F .init.text 0000000000000734 thermal_of_build_thermal_zone
Done with the help of Coccinelle. The semantic patch checks for local
static non-init functions that are called from an __init function and are
not called from any other function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
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For devm-managed input devices we should not modify input device's parent,
otherwise automatic release of resources will not work properly.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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For devm-managed input devices we should not modify input device's parent,
otherwise automatic release of resources will not work properly.
Tested-by: "H. Nikolaus Schaller" <hns@goldelico.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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The test pattern generator will be used by other drivers as the virtual
media controller (vimc)
Signed-off-by: Helen Mae Koike Fornazier <helen.koike@collabora.co.uk>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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The v4l2_rect helper functions have been moved to
include/media/v4l2-rect.h. Use this new header, dropping the functions
from vivid.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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This makes it easier to share this code with any driver that needs to
manipulate the v4l2_rect datastructure.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Instead of rolling our own define, just use the new mask defines.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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The v4l2_device_call_* defines filter subdevs based on the grp_id value.
But some drivers use a bitmask, so instead of filtering by grp_id == value,
you want to filter by grp_id & value.
Make variants of these defines to do this.
The 'has_op' define has been extended to have a grp_id argument as well, and
a mask variant has been added.
This extra argument required a change to go7007.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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The ADV7180 supports NTSC, PAL and SECAM.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Add support to get the pixel aspect ratio depending on the current
standard (50 vs 60 Hz).
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Add support to get the standard to the adv7180 driver.
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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This patch defines region_configs[] array as const array since it
is not changed anywhere in code.
Signed-off-by: Claudiu Beznea <claudiu.beznea@gmail.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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should be zeroed
The DV_TIMINGS_CAP documentation didn't state clearly that the pad and
reserved fields should be zeroed by the application. For subdev pad can
be other values as well.
It also mistakenly said that only drivers would have to zero the reserved
field, that's not correct.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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should be zeroed
The ENUM_DV_TIMINGS documentation did not clearly state that the pad and reserved
fields should be zeroed (pad only when used with a video device node).
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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The G/S_EDID documentation did not explicitly state that the reserved array
should be zeroed by the application.
Also add the missing VIDIOC_SUBDEV_G/S_EDID ioctl names to the header.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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v4l2-compliance complained about this.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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remove,unnecessary ret variable"
This reverts commit afa5d19a2b5f ("staging: media: davinci_vpfe: remove
unnecessary ret variable").
This patch is completely bogus and messed up the code big time.
I'm not sure what was intended, but this isn't it.
Cc: Thaissa Falbo <thaissa.falbo@gmail.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes the following issues:
- Incorrect output buffer size calculation in rsa-pkcs1pad
- Uninitialised padding bytes on exported state in ccp driver
- Potentially freed pointer used on completion callback in sha1-mb"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: ccp - Prevent information leakage on export
crypto: sha1-mb - use corrcet pointer while completing jobs
crypto: rsa-pkcs1pad - fix dst len
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Commit 588afcc1c0e4 ("[media] usbvision fix overflow of interfaces
array")' should be reverted, because:
* "!dev->actconfig->interface[ifnum]" won't catch a case where the value
is not NULL but some garbage. This way the system may crash later with
GPF.
* "(ifnum >= USB_MAXINTERFACES)" does not cover all the error
conditions. "ifnum" should be compared to "dev->actconfig->
desc.bNumInterfaces", i.e. compared to the number of "struct
usb_interface" kzalloc()-ed, not to USB_MAXINTERFACES.
* There is a "struct usb_device" leak in this error path, as there is
usb_get_dev(), but no usb_put_dev() on this path.
* There is a bug of the same type several lines below with number of
endpoints. The code is accessing hard-coded second endpoint
("interface->endpoint[1].desc") which may not exist. It would be great
to handle this in the same patch too.
* All the concerns above are resolved by already-accepted commit fa52bd50
("[media] usbvision: fix crash on detecting device with invalid
configuration")
* Mailing list message:
http://www.spinics.net/lists/linux-media/msg94832.html
Signed-off-by: Vladis Dronov <vdronov@redhat.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Cc: <stable@vger.kernel.org> # for v4.5
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Fix this smatch error:
dib0090.c:1124 dib0090_pwm_gain_reset() error: we previously assumed 'state->rf_ramp' could be null (see line 1086)
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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These are false positives, but still easy to fix.
pvrusb2-hdw.c:3676 pvr2_send_request_ex() error: we previously assumed 'write_data' could be null (see line 3648)
pvrusb2-hdw.c:3829 pvr2_send_request_ex() error: we previously assumed 'read_data' could be null (see line 3649)
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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The smatch utility got really confused about the grp % 22 code. Rewrote
it so it now understands that there really isn't a buffer overwrite.
vivid-rds-gen.c:82 vivid_rds_generate() error: buffer overflow 'rds->psname' 9 <= 43
vivid-rds-gen.c:83 vivid_rds_generate() error: buffer overflow 'rds->psname' 9 <= 42
vivid-rds-gen.c:89 vivid_rds_generate() error: buffer overflow 'rds->radiotext' 65 <= 84
vivid-rds-gen.c:90 vivid_rds_generate() error: buffer overflow 'rds->radiotext' 65 <= 85
vivid-rds-gen.c:92 vivid_rds_generate() error: buffer overflow 'rds->radiotext' 65 <= 86
vivid-rds-gen.c:93 vivid_rds_generate() error: buffer overflow 'rds->radiotext' 65 <= 87
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Set vb2_queue.gfp_flags to GFP_DMA32. Otherwise it will start to
create bounce buffers which is something you want to avoid since
those are in limited supply.
Without this patch, DMA scatter-gather may not work because
machines can ran out of buffers easily.
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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The mainline tw686x driver also supports audio, that's missing here
as well.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Set vb2_queue.gfp_flags to GFP_DMA32. Otherwise it will start to
create bounce buffers which is something you want to avoid since
those are in limited supply.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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the dma_requests field is cached, but cache is not used:
drivers/staging/media/tw686x-kh/tw686x-kh-video.c: In function 'tw686x_video_irq':
drivers/staging/media/tw686x-kh/tw686x-kh-video.c:622:6: warning: variable 'requests' set but not used [-Wunused-but-set-variable]
u32 requests;
^
Use the cache instead, as it seems reading it needs to be done
with spin lock taken.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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This commit introduces the support for the Techwell TW686x video
capture IC. This hardware supports a few DMA modes, including
scatter-gather and frame (contiguous).
This commit makes little use of the DMA engine and instead has
a memcpy based implementation. DMA frame and scatter-gather modes
support may be added in the future.
Currently supported chips:
- TW6864 (4 video channels),
- TW6865 (4 video channels, not tested, second generation chip),
- TW6868 (8 video channels but only 4 first channels using
built-in video decoder are supported, not tested),
- TW6869 (8 video channels, second generation chip).
[mchehab@osg.samsung.com: make checkpatch happy by using "unsigned int"
instead of just "unsigned"]
Cc: Krzysztof Halasa <khalasa@piap.pl>
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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A driver for Intersil/Techwell TW686x-based PCIe frame grabbers.
[hans.verkuil@cisco.com: renamed staging tw686x to tw686x-kh to prevent naming conflicts]
[hans.verkuil@cisco.com: don't build tw686x-kh if tw686x is already selected to prevent conflicts]
[mchehab@osg.samsung.com: use "unsigned int" instead of just "unsigned" and add some whitespaces to make checkpatch happier]
Signed-off-by: Krzysztof Halasa <khalasa@piap.pl>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Tested-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Those callbacks are called with the media_device.graph_mutex held.
Add a note about that, as the code called by those notifiers should
not be touching in the mutex.
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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Right now, the lock schema for media_device struct is messy,
since sometimes, it is protected via a spin lock, while, for
media graph traversal, it is protected by a mutex.
Solve this conflict by always using a mutex.
As a side effect, this prevents a bug when the media notifiers
is called at atomic context, while running the notifier callback:
BUG: sleeping function called from invalid context at mm/slub.c:1289
in_atomic(): 1, irqs_disabled(): 0, pid: 3479, name: modprobe
4 locks held by modprobe/3479:
#0: (&dev->mutex){......}, at: [<ffffffff81ce8933>] __driver_attach+0xa3/0x160
#1: (&dev->mutex){......}, at: [<ffffffff81ce8941>] __driver_attach+0xb1/0x160
#2: (register_mutex#5){+.+.+.}, at: [<ffffffffa10596c7>] usb_audio_probe+0x257/0x1c90 [snd_usb_audio]
#3: (&(&mdev->lock)->rlock){+.+.+.}, at: [<ffffffffa0e6051b>] media_device_register_entity+0x1cb/0x700 [media]
CPU: 2 PID: 3479 Comm: modprobe Not tainted 4.5.0-rc3+ #49
Hardware name: /NUC5i7RYB, BIOS RYBDWi35.86A.0350.2015.0812.1722 08/12/2015
0000000000000000 ffff8803b3f6f288 ffffffff81933901 ffff8803c4bae000
ffff8803c4bae5c8 ffff8803b3f6f2b0 ffffffff811c6af5 ffff8803c4bae000
ffffffff8285d7f6 0000000000000509 ffff8803b3f6f2f0 ffffffff811c6ce5
Call Trace:
[<ffffffff81933901>] dump_stack+0x85/0xc4
[<ffffffff811c6af5>] ___might_sleep+0x245/0x3a0
[<ffffffff811c6ce5>] __might_sleep+0x95/0x1a0
[<ffffffff8155aade>] kmem_cache_alloc_trace+0x20e/0x300
[<ffffffffa0e66e3d>] ? media_add_link+0x4d/0x140 [media]
[<ffffffffa0e66e3d>] media_add_link+0x4d/0x140 [media]
[<ffffffffa0e69931>] media_create_pad_link+0xa1/0x600 [media]
[<ffffffffa0fe11b3>] au0828_media_graph_notify+0x173/0x360 [au0828]
[<ffffffffa0e68a6a>] ? media_gobj_create+0x1ba/0x480 [media]
[<ffffffffa0e606fb>] media_device_register_entity+0x3ab/0x700 [media]
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Acked-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
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This reverts commit cfe255600154f0072d4a8695590dbd194dfd1aeb
This can result in a "Unable to handle kernel paging request"
during boot. This was due to using an uninitialised struct member,
data->slaves.
Signed-off-by: Andrew Goodbody <andrew.goodbody@cambrionix.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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If userspace calls UNLOCK_PI unconditionally without trying the TID -> 0
transition in user space first then the user space value might not have the
waiters bit set. This opens the following race:
CPU0 CPU1
uval = get_user(futex)
lock(hb)
lock(hb)
futex |= FUTEX_WAITERS
....
unlock(hb)
cmpxchg(futex, uval, newval)
So the cmpxchg fails and returns -EINVAL to user space, which is wrong because
the futex value is valid.
To handle this (yes, yet another) corner case gracefully, check for a flag
change and retry.
[ tglx: Massaged changelog and slightly reworked implementation ]
Fixes: ccf9e6a80d9e ("futex: Make unlock_pi more robust")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: stable@vger.kernel.org
Cc: Davidlohr Bueso <dave@stgolabs.net>
Cc: Darren Hart <dvhart@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1460723739-5195-1-git-send-email-bigeasy@linutronix.de
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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After conversion to new AEAD interface, tcrypt tests fail as follows:
[...]
[ 1.145414] alg: aead: Test 1 failed on encryption for authenc-hmac-sha1-cbc-aes-talitos
[ 1.153564] 00000000: 53 69 6e 67 6c 65 20 62 6c 6f 63 6b 20 6d 73 67
[ 1.160041] 00000010: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
[ 1.166509] 00000020: 00 00 00 00
[...]
Fix them by providing the correct cipher in & cipher out pointers,
i.e. must skip over associated data in src and dst S/G.
While here, fix a problem with the HW S/G table index usage:
tbl_off must be updated after the pointer to the table entries is set.
Cc: <stable@vger.kernel.org> # 4.3+
Fixes: aeb4c132f33d ("crypto: talitos - Convert to new AEAD interface")
Reported-by: Jonas Eymann <J.Eymann@gmx.net>
Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Conversion of talitos driver to the new AEAD interface
hasn't been properly tested.
AEAD algorithms crash in talitos_cra_init as follows:
[...]
[ 1.141095] talitos ffe30000.crypto: hwrng
[ 1.145381] Unable to handle kernel paging request for data at address 0x00000058
[ 1.152913] Faulting instruction address: 0xc02accc0
[ 1.157910] Oops: Kernel access of bad area, sig: 11 [#1]
[ 1.163315] SMP NR_CPUS=2 P1020 RDB
[ 1.166810] Modules linked in:
[ 1.169875] CPU: 0 PID: 1007 Comm: cryptomgr_test Not tainted 4.4.6 #1
[ 1.176415] task: db5ec200 ti: db4d6000 task.ti: db4d6000
[ 1.181821] NIP: c02accc0 LR: c02acd18 CTR: c02acd04
[ 1.186793] REGS: db4d7d30 TRAP: 0300 Not tainted (4.4.6)
[ 1.192457] MSR: 00029000 <CE,EE,ME> CR: 95009359 XER: e0000000
[ 1.198585] DEAR: 00000058 ESR: 00000000
GPR00: c017bdc0 db4d7de0 db5ec200 df424b48 00000000 00000000 df424bfc db75a600
GPR08: df424b48 00000000 db75a628 db4d6000 00000149 00000000 c0044cac db5acda0
GPR16: 00000000 00000000 00000000 00000000 00000000 00000000 00000400 df424940
GPR24: df424900 00003083 00000400 c0180000 db75a640 c03e9f84 df424b40 df424b48
[ 1.230978] NIP [c02accc0] talitos_cra_init+0x28/0x6c
[ 1.236039] LR [c02acd18] talitos_cra_init_aead+0x14/0x28
[ 1.241443] Call Trace:
[ 1.243894] [db4d7de0] [c03e9f84] 0xc03e9f84 (unreliable)
[ 1.249322] [db4d7df0] [c017bdc0] crypto_create_tfm+0x5c/0xf0
[ 1.255083] [db4d7e10] [c017beec] crypto_alloc_tfm+0x98/0xf8
[ 1.260769] [db4d7e40] [c0186a20] alg_test_aead+0x28/0xc8
[ 1.266181] [db4d7e60] [c0186718] alg_test+0x260/0x2e0
[ 1.271333] [db4d7ee0] [c0183860] cryptomgr_test+0x30/0x54
[ 1.276843] [db4d7ef0] [c0044d80] kthread+0xd4/0xd8
[ 1.281741] [db4d7f40] [c000e4a4] ret_from_kernel_thread+0x5c/0x64
[ 1.287930] Instruction dump:
[ 1.290902] 38600000 4e800020 81230028 7c681b78 81490010 38e9ffc0 3929ffe8 554a073e
[ 1.298691] 2b8a000a 7d474f9e 812a0008 91230030 <80e90058> 39270060 7c0004ac 7cc04828
Cc: <stable@vger.kernel.org> # 4.3+
Fixes: aeb4c132f33d ("crypto: talitos - Convert to new AEAD interface")
Signed-off-by: Jonas Eymann <J.Eymann@gmx.net>
Fix typo - replaced parameter of __crypto_ahash_alg(): s/tfm/alg
Remove checkpatch warnings.
Add commit message.
Signed-off-by: Horia Geant? <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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Since of_get_cpu_node() increments refcount, the node should be put.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Add HD Audio Device PCI ID for the Intel Broxton-T platform.
It is an HDA Intel PCH controller.
Signed-off-by: Lu, Han <han.lu@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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When using asynchronous read or write operations on the USB endpoints the
issuer of the IO request is notified by calling the ki_complete() callback
of the submitted kiocb when the URB has been completed.
Calling this ki_complete() callback will free kiocb. Make sure that the
structure is no longer accessed beyond that point, otherwise undefined
behaviour might occur.
Fixes: 2e4c7553cd6f ("usb: gadget: f_fs: add aio support")
Cc: <stable@vger.kernel.org> # v3.15+
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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If skb_recv_datagram returns an skb, we should ignore the err
value returned. Otherwise, datagram receives will return EAGAIN
when they have to wait for a datagram.
Acked-by: Adit Ranadive <aditr@vmware.com>
Signed-off-by: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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skb->sk could point to timewait or request socket which has no sk_classid.
Detected as "BUG: KASAN: slab-out-of-bounds in cls_cgroup_classify".
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch fixes couple error paths after allocation failures.
Atomic set of page reference counter is safe only if it is zero,
otherwise set can race with any speculative get_page_unless_zero.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: David S. Miller <davem@davemloft.net>
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High order pages are optional here since commit 51151a16a60f ("mlx4: allow
order-0 memory allocations in RX path"), so here is no reason for depleting
reserves. Generic __netdev_alloc_frag() implements the same logic.
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge the ptmx internal interface cleanup branch.
This doesn't change semantics, but it should be a sane basis for
eventually getting the multi-instance devpts code into some sane shape
where we can get rid of the kernel config option. Which we can
hopefully get done next merge window..
* ptmx-cleanup:
devpts: clean up interface to pty drivers
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On all shmobile ARM SoCs, loop-based delays may complete early, which
can be after only 1/3 (Cortex A9) or 1/2 (Cortex A7 or A15) of the
minimum required time.
This is caused by calculating preset_lpj based on incorrect assumptions
about the number of clock cycles per loop:
- All of Cortex A7, A9, and A15 run __loop_delay() at 1 loop per
CPU clock cycle,
- As of commit 11d4bb1bd067f9d0 ("ARM: 7907/1: lib: delay-loop: Add
align directive to fix BogoMIPS calculation"), Cortex A8 runs
__loop_delay() at 1 loop per 2 instead of 3 CPU clock cycles.
On SoCs with Cortex A7 and/or A15 CPU cores, this went unnoticed, as
delays use the ARM arch timer if available. R-Car Gen2 doesn't work if
the arch timer is disabled. However, APE6 can be used without the arch
timer.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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This reverts commit 19417bd9c511 ("ARM: dts: porter: Enable SCIF_CLK
frequency and pins") as according to
http://elinux.org/File:R-CarM2-KOELSCH_PORTER-B_PORTER_C_Comparison.pdf
the external oscillator for SCIF_CLK is not mounted on the porter boards.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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clk_get on a disabled clock node will return EPROBE_DEFER, which can
cause drivers to be deferred forever if such clocks are referenced in
their clocks property.
Update the various disabled external clock nodes to default to a
frequency of 0, but don't disable them to prevent this.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
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Currently the optional IPC resources prevent telemetry driver from
probing if these resources are not in ACPI table. This patch decouples
telemetry driver from these optional resources, so that telemetry driver
has dependency only on the necessary ACPI resources.
Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com>
Signed-off-by: Darren Hart <dvhart@linux.intel.com>
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Although one weird behavior about the input path (inconsistent D0/D3
switch) on Cirrus CS420x codecs was fixed in the previous commit,
there is still an issue on some Mac machines: the capture stream
stalls when switching the ADCs on the fly. More badly, this keeps
stuck until the next reboot.
The dynamic ADC switching is already a bit fragile and assuming
optimistically that the chip accepts the frequent power changes. On
Cirrus codecs, this doesn't seem applicable.
As a quick workaround, we pin down the ADCs to keep up in D0 when
spec->dyn_adc_switch is set. In this way, the ADCs are kept up only
for the system that were confirmed to be broken.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=116171
Cc: <stable@vger.kernel.org> # v4.4+
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Commit b8c9592 "ARM: 8318/1: treat CPU feature register fields as signed
quantities" introduced helper to extract signed quantities of 4-bit
blocks. However, with a current code feature with value 0b1000 isn't
rejected as negative. So fix the "if" condition.
Reported-by: Jonathan Brawn <Jon.Brawn@arm.com>
Signed-off-by: Vladimir Murzin <vladimir.murzin@arm.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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