sdk/emulator/emulator-kernel.git
11 years agoYaGL: Implemented multicore rendering and fences 47/18147/1
Stanislav Vorobiov [Thu, 28 Nov 2013 10:51:12 +0000 (14:51 +0400)]
YaGL: Implemented multicore rendering and fences

We now use multicore rendering, i.e. we offload all
rendering to a separate thread and use fences to wait
until certain parts of it are complete. This patch
implements fences via TTM sync objects, it also uses
TTM execbuffer utils to fence buffers and TTM object
files to export fences to user space

Change-Id: Ibed86c3161f3b7207725c8662ffa909d103acedf

11 years agoVIGS: Don't rely on 'no_wait_reserve' parameter when pinnin GEMs 46/18146/1
Stanislav Vorobiov [Wed, 11 Dec 2013 09:26:13 +0000 (13:26 +0400)]
VIGS: Don't rely on 'no_wait_reserve' parameter when pinnin GEMs

'no_wait_reserve' parameter isn't accounted for in
ttm_bo_validate, so don't rely on GEM reserve wait,
just retry things instead

Change-Id: Iab57645c8ab96f30c01b943342cdff9bacac8feb

11 years agoVIGS: Fix pageflip race 45/18145/1
Stanislav Vorobiov [Tue, 10 Dec 2013 16:52:54 +0000 (20:52 +0400)]
VIGS: Fix pageflip race

Must use event_lock, since it's being used
in vigs_finish_pageflips to lock pageflip_event_list.

Also, by the time we call drm_vblank_put the event might already
be processed, so check for that

Change-Id: I9c5de98452353c6d4f09e4e4fbd92176cfd8ee40

11 years agoYaGL: Version bump 44/18144/1
Stanislav Vorobiov [Mon, 7 Oct 2013 11:31:29 +0000 (15:31 +0400)]
YaGL: Version bump

Change-Id: I6ecf4d3e2121cacc293af82bfde8d96bfe55dc06

11 years agoYaGL: Transport improved 43/18143/1
Stanislav Vorobiov [Tue, 24 Sep 2013 14:48:33 +0000 (18:48 +0400)]
YaGL: Transport improved

The improvements are:

* No more mlock/munlock. We now have ioctls for locking drawable
  memory so that compile transfers could be created on host. This
  is only used by offscreen backend though
* We're now using a single buffer for marshalling instead of two: one
  for commands and one for data. Also, the buffer can now be of any
  size up to 2M, it's implemented as a page list, thus, we don't need
  to allocate contigous memory anymore

Change-Id: Ia9b716c9135df75535dc515367550c9fbcf9c737

11 years agoVIGS: Don't 'update_vram' on 'set_root_surface' 42/18142/1
Stanislav Vorobiov [Fri, 2 Aug 2013 13:54:12 +0000 (17:54 +0400)]
VIGS: Don't 'update_vram' on 'set_root_surface'

This is now automatically happens on glFinish,
eglSwapBuffers, eglCopyBuffers, etc.

Change-Id: Ie20724ec8ce6283e8fda1248f368f00e704e0e3d

11 years agoYaGL: Version bump 41/18141/1
Stanislav Vorobiov [Wed, 31 Jul 2013 10:32:28 +0000 (14:32 +0400)]
YaGL: Version bump

Change-Id: Ie681f7251648451d9a425e97f215a8b0b50ebbbb

11 years agoVIGS: Use BO instead of VMA in struct vigs_mman_vma 40/18140/1
Stanislav Vorobiov [Wed, 24 Jul 2013 07:24:08 +0000 (11:24 +0400)]
VIGS: Use BO instead of VMA in struct vigs_mman_vma

It's better to use BO in struct vigs_mman_vma instead of
VMA that was allocated in mmap call

Change-Id: I883613c71bf3880dba9edb6fdaa7fd0aee83d044

11 years agoVIGS: Delay surface destruction 39/18139/1
Stanislav Vorobiov [Tue, 23 Jul 2013 15:40:03 +0000 (19:40 +0400)]
VIGS: Delay surface destruction

We should destroy surfaces on TTM BO destruction
instead of GEM free handler. The latter may cause races
like this:
1. GEM is created
2. GEM is mapped and written to
3. GEM is freed, but not unmapped. Thus, the host gets
   a "destroy_surface" command and target frees up
   an id from IDR.
4. Another GEM is created. Thus, it's assigned a freed id, which
   is id of first GEM, the host gets "create_surface" command
5. First GEM is unmapped, host gets "update_gpu" command with
   wrong data and size and crashes

The race occured on wayland/GBM during window resize

Change-Id: Ifddab147999e450e4b4affd7144d91f29fb39534

11 years agoVIGS: Don't call TTM's vm_close 38/18138/1
Stanislav Vorobiov [Fri, 19 Jul 2013 16:35:30 +0000 (20:35 +0400)]
VIGS: Don't call TTM's vm_close

TTM's vm_close sets vm_private_data to NULL even if VMA is
still referenced, we don't want this since this may cause
a NULL pointer dereference. And this indeed happens sometimes
on wayland

Change-Id: Idf4af80ef0d472a1a480491cb56e6cc8d9d39123

11 years agoVIGS: Fixed vigs_fb_create return values 37/18137/1
Stanislav Vorobiov [Fri, 12 Jul 2013 12:15:38 +0000 (16:15 +0400)]
VIGS: Fixed vigs_fb_create return values

Change-Id: Ice57af4d21899080c5572343f5734697cd20e21d
VIGS: Added dummy cursor handling

11 years agoVIGS: Lock console before fb notifier chain walk 36/18136/1
Stanislav Vorobiov [Thu, 11 Jul 2013 09:23:18 +0000 (13:23 +0400)]
VIGS: Lock console before fb notifier chain walk

This is required to work properly with fbcon

Change-Id: I641e2762e7918cd9d9147f3a44ba2911a1f50019

11 years agoVIGS: Make GEM access tracking optional 35/18135/1
Stanislav Vorobiov [Thu, 11 Jul 2013 06:43:20 +0000 (10:43 +0400)]
VIGS: Make GEM access tracking optional

For dumb GEM API we need to have GEM access tracking
disabled and always assume that access is RW.
Thus, we make GEM access tracking optional, so that user-mode
can specify if it's wanted or not

Change-Id: Ia8be76e1c15b0b4734997c16ad245b018c6d2ba6

11 years agoVIGS: GEM access tracking implemented 34/18134/1
Stanislav Vorobiov [Tue, 2 Jul 2013 14:51:23 +0000 (18:51 +0400)]
VIGS: GEM access tracking implemented

In order to minimize GEM data transfers between
target and host we now track GEM memory accesses for each
VMA. Thus, we only update VRAM/GPU when there's at least one
VMA that requires it

Change-Id: Ib65ff22957e6a89d83329deca4753b69cd39ca3d

11 years agoVIGS: Walk fb notifier call chain on DPMS 33/18133/1
Stanislav Vorobiov [Mon, 1 Jul 2013 11:52:59 +0000 (15:52 +0400)]
VIGS: Walk fb notifier call chain on DPMS

Since currently maru_bl is used to control LCD power
we need a way to trigger it. fbdev does this
automatically on FB_BLANK events by walking fb notifier call
chain. DRM doesn't do this on DPMS, so we need to do this
ourselves

Change-Id: I9585b06c027b210b4b563c2332c092a3084663e2

11 years agoVIGS: Automatically update VRAM when setting new root surface 32/18132/1
Stanislav Vorobiov [Thu, 27 Jun 2013 14:24:28 +0000 (18:24 +0400)]
VIGS: Automatically update VRAM when setting new root surface

When we set new root surface (for example, as part of pageflip) we
should check if that surface is GPU dirty and if it is - update VRAM.
If we don't do this we might flip stuff without QEMU display
being updated

Change-Id: I4c9c630d09f5608fb6b09ecc3b54eb30695ef574

11 years agoVIGS: DRM VBLANK handling implemented 31/18131/1
Stanislav Vorobiov [Mon, 24 Jun 2013 12:56:12 +0000 (16:56 +0400)]
VIGS: DRM VBLANK handling implemented

VIGS: DRM pageflip handling implemented

VIGS DRM driver now supports both VBLANK events and
pageflip events

Change-Id: I98d4f89ea6f5342839f05f1ebf6085294542dbc5

11 years agoVIGS: Remove "ttm shrink disable" hack 30/18130/1
Stanislav Vorobiov [Tue, 18 Jun 2013 06:32:00 +0000 (10:32 +0400)]
VIGS: Remove "ttm shrink disable" hack

There's a right way to do this by specifying 0 in
accounted size for a BO. That way we can allocate as much BOs
as we want with used_mem always remaining 0

Change-Id: Ic1de1b832dea90b18b3441d504118773019ce9ee

11 years agoVIGS: Support custom resolutions 29/18129/1
Stanislav Vorobiov [Mon, 17 Jun 2013 15:29:48 +0000 (19:29 +0400)]
VIGS: Support custom resolutions

Change-Id: I779f469eb5ef9c82dbc06493cdb3a448c1c30a51

11 years agoYaGL: Version bump 28/18128/1
Stanislav Vorobiov [Mon, 10 Jun 2013 15:37:15 +0000 (19:37 +0400)]
YaGL: Version bump

Change-Id: I3c22f8e615f28e17d73747a43c0abab381eaa207

11 years agoVIGS: VRAM <-> GPU movements are now handled via page faults 27/18127/1
Stanislav Vorobiov [Fri, 7 Jun 2013 14:40:28 +0000 (18:40 +0400)]
VIGS: VRAM <-> GPU movements are now handled via page faults

VIGS: Fixed update_gpu command

VRAM <-> GPU movements are now handled via page faults, thus, user space
can mmap as many GEMs as it likes, they'll all be in GPU placement by
default and moved to VRAM as needed on page faults. Page fault handler will
also take care of eviction in case of there's no free space in VRAM

update_gpu command wasn't updated for last protocol change, fixed it

Change-Id: Iaab0c760e68b4cb5f29bdd77d025f655f04ebb51

11 years agoVIGS: kernel now is surface dirty aware 26/18126/1
Stanislav Vorobiov [Thu, 6 Jun 2013 16:48:36 +0000 (20:48 +0400)]
VIGS: kernel now is surface dirty aware

kernel now knows about dirty state of each surface

Change-Id: I7f801fa84f57ee9811fbd79bcb408507439acd62

11 years agoslp_global_lock added 25/18125/1
Stanislav Vorobiov [Mon, 3 Jun 2013 13:29:28 +0000 (17:29 +0400)]
slp_global_lock added

Conflicts:

arch/x86/configs/i386_tizen_emul_defconfig
drivers/misc/Kconfig
drivers/misc/Makefile

Change-Id: I44c9714eafc02e98d35b4a09b6135211dd4d65ab

11 years agoVIGS: Protocol updated 24/18124/1
Stanislav Vorobiov [Mon, 27 May 2013 15:38:40 +0000 (19:38 +0400)]
VIGS: Protocol updated

Change-Id: I4946fd3bee5d63ab22e5dd8fc280b91c23d67cc5

11 years agoYaGL: Version bump 23/18123/1
Stanislav Vorobiov [Wed, 15 May 2013 09:02:34 +0000 (13:02 +0400)]
YaGL: Version bump

Change-Id: I29b65916421e8718dddb17f357c8b928501135d0

11 years agoVIGS: Fixed GEM reserve deadlock 22/18122/1
Stanislav Vorobiov [Mon, 6 May 2013 16:39:28 +0000 (20:39 +0400)]
VIGS: Fixed GEM reserve deadlock

Change-Id: Ic4609ff43ea4689f13a56da41696f6a500d21a64

11 years agoVIGS: Dirty flag support in vigs_surface 21/18121/1
Stanislav Vorobiov [Mon, 6 May 2013 14:48:07 +0000 (18:48 +0400)]
VIGS: Dirty flag support in vigs_surface

Dirty flag in vigs_surface is need in order to tell the kernel
that we want contents of VRAM to be uploaded into GPU when the surface
is evicted from VRAM. The flag is automatically cleared whenever
update_gpu command is found in execbuffer

Change-Id: I78e20f541d56ba958c5ac15d00b2ed7a2c841f2d

11 years agoVIGS: Potential deadlock fixed 20/18120/1
Stanislav Vorobiov [Tue, 30 Apr 2013 13:10:46 +0000 (17:10 +0400)]
VIGS: Potential deadlock fixed

Change-Id: I6e7bfc824fc637bcc77896919c504da17eddfe2b

11 years agoVIGS: Command list patching implemented 19/18119/1
Stanislav Vorobiov [Mon, 29 Apr 2013 14:02:11 +0000 (18:02 +0400)]
VIGS: Command list patching implemented

It's necessary to patch commands such as update_vram and update_gpu
in kernel since only kernel knows about VRAM offset of a surface

Change-Id: Ia4a0f53e768d40d8323cebfe101b8e86c4c21261

11 years agoVIGS: Return some more info for GEMs 18/18118/1
Stanislav Vorobiov [Fri, 26 Apr 2013 13:46:03 +0000 (17:46 +0400)]
VIGS: Return some more info for GEMs

Change-Id: Ia7b4ce407e64f36063b21d987c602af6c5ffbc16

11 years agoVIGS: We now send commands to host again 17/18117/1
Stanislav Vorobiov [Fri, 26 Apr 2013 10:53:59 +0000 (14:53 +0400)]
VIGS: We now send commands to host again

Host side code is fixed to work via new protocol

Change-Id: I4fd731e07e451923e649d1ba8bda3dd903b94023

11 years agoVIGS: Introduce an idr to generate surface ids 16/18116/1
Stanislav Vorobiov [Fri, 26 Apr 2013 06:08:48 +0000 (10:08 +0400)]
VIGS: Introduce an idr to generate surface ids

Using mmap offsets as surface ids is not good since they're 64-bit

Change-Id: I03356f4f5de67153d87cdb73e4c0102b67883793

11 years agoVIGS: Refactoring for DRI2 15/18115/1
Stanislav Vorobiov [Wed, 24 Apr 2013 06:48:55 +0000 (10:48 +0400)]
VIGS: Refactoring for DRI2

In order to support DRI2 we must move surfaces from X.Org
into kernel. This implies having additional TTM placement - GPU placement.
We must support eviction in vigs_mman in order to be able to create
surfaces that don't occupy VRAM (Now this is done in X.Org).
Also, command execution must be moved from userland to kernel as well
and we also want to add ability to batch several commands in order
to minimize user-kernel transitions and target-host transitions.

Change-Id: I0a5d3c7627b262c0011c485d8918d125775e9a53

11 years agoYaGL: bump version 14/18114/1
Igor Mitsyanko [Fri, 18 Jan 2013 17:20:28 +0000 (21:20 +0400)]
YaGL: bump version

Change-Id: I0ce50b9a42ce26f9dabc519a06cbc4fb2cff7ed5
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com>
11 years agoVIGS: Protocol updated 13/18113/1
Stanislav Vorobiov [Fri, 11 Jan 2013 08:20:10 +0000 (12:20 +0400)]
VIGS: Protocol updated

Change-Id: If8e47f16448a39d5e6e1722fe0f497c03db3d154

11 years agoVIGS: Replace "Virtual" connector with "LVDS" 12/18112/1
Stanislav Vorobiov [Wed, 9 Jan 2013 17:09:57 +0000 (21:09 +0400)]
VIGS: Replace "Virtual" connector with "LVDS"

e17 devicemgr seems to depend on it

Change-Id: I0bbe82c5c6ea28a1af69189ab05e4189545f8b1e

11 years agoVIGS: Implemented first version 11/18111/1
Stanislav Vorobiov [Tue, 25 Dec 2012 14:29:17 +0000 (18:29 +0400)]
VIGS: Implemented first version

Conflicts:

drivers/gpu/drm/Kconfig
drivers/gpu/drm/Makefile

Change-Id: I5ef50259bb6820083274baf5088cee236f7a4bf4

11 years agoYaGL: bump version 10/18110/1
Igor Mitsyanko [Thu, 13 Dec 2012 13:26:29 +0000 (17:26 +0400)]
YaGL: bump version

Bump version after GLES1 support was merged to QEMU and target parts.

Change-Id: I11e266c393297a9fc2f4212c46000ae77d980f92
Signed-off-by: Igor Mitsyanko <i.mitsyanko@samsung.com>
11 years agoYaGL: Version bump 09/18109/1
Stanislav Vorobiov [Wed, 12 Dec 2012 08:01:38 +0000 (12:01 +0400)]
YaGL: Version bump

Change-Id: I117206cb1ba1eae0bf86e482b41bdd52c075458e

11 years agoYaGL: We now report render type to user space 08/18108/1
Stanislav Vorobiov [Fri, 7 Dec 2012 09:20:23 +0000 (13:20 +0400)]
YaGL: We now report render type to user space

Change-Id: Iedf70ba5452640a76b68dcbe08dc0e9cdff321ea

11 years agoYaGL: Version bump 07/18107/1
Stanislav Vorobiov [Fri, 21 Sep 2012 08:41:53 +0000 (12:41 +0400)]
YaGL: Version bump

Change-Id: Ie977471bf45db15bce21b8fcbe1c6e937c2ef75c

11 years agoYaGL: We can now allocate more than one page for marshalling buffer 06/18106/1
Stanislav Vorobiov [Mon, 17 Sep 2012 09:19:58 +0000 (13:19 +0400)]
YaGL: We can now allocate more than one page for marshalling buffer

Change-Id: Ic5d41b2c75248e2440c85be29ab34183d4a26849

11 years agoYaGL: Allow user to specify marshal buffer size 05/18105/1
Stanislav Vorobiov [Thu, 13 Sep 2012 13:30:18 +0000 (17:30 +0400)]
YaGL: Allow user to specify marshal buffer size

It still has to be 1 page, to be fixed later

Change-Id: I5c1d8a276922008621a468485f61e69566abd0c6

11 years agoYaGL: version bump 04/18104/1
Stanislav Vorobiov [Thu, 13 Sep 2012 07:05:02 +0000 (11:05 +0400)]
YaGL: version bump

Change-Id: I975a676573c24188e96d0066193233e43a9ecd03

11 years agoYaGL: passthrough device added 03/18103/1
Stanislav Vorobiov [Mon, 10 Sep 2012 10:10:19 +0000 (14:10 +0400)]
YaGL: passthrough device added

Conflicts:

arch/arm/configs/tizen_defconfig
drivers/gpu/Makefile

Change-Id: I76daea09e8d27338b763109dbfffa674f400e626

11 years agomaru_camera : Add new camera device for Tizen emulator 73/17973/1
jinhyung.jo [Thu, 13 Mar 2014 10:05:11 +0000 (19:05 +0900)]
maru_camera : Add new camera device for Tizen emulator

Add new camera device for Tizen emulator

Change-Id: Ie909aad4e7e4ae9009f92f76a1458a37efd93998
Signed-off-by: Jinhyung Jo <jinhyung.jo@samsung.com>
11 years agomaru_overlay : Add new overlay device for Tizen emulator 72/17972/1
jinhyung.jo [Thu, 13 Mar 2014 09:48:28 +0000 (18:48 +0900)]
maru_overlay : Add new overlay device for Tizen emulator

Add new overlay device for Tizen emulator

Change-Id: I0bcb64e69d6152b9b1bf3cac1322ab840970ec6c
Signed-off-by: Jinhyung Jo <jinhyung.jo@samsung.com>
11 years agomaru_bl : Add new backlight device for Tizen emulator 71/17971/1
jinhyung.jo [Thu, 13 Mar 2014 09:16:29 +0000 (18:16 +0900)]
maru_bl : Add new backlight device for Tizen emulator

Add new backlight(& lcd) device for Tizen emulator

Change-Id: I76299ceac5d347fb69d8f4c6f7c60097d95b9b2a
Signed-off-by: Jinhyung Jo <jinhyung.jo@samsung.com>
11 years agoSENSOR: removed the warning of __ATTR_RW duplication 37/16937/1
Jinhyung Choi [Thu, 27 Feb 2014 08:17:33 +0000 (17:17 +0900)]
SENSOR: removed the warning of __ATTR_RW duplication

Change-Id: Ib77bec32159781acf034c6be8f33ab7907d163f0
Signed-off-by: Jinhyung Choi <jinhyung2.choi@samsung.com>
11 years agomaru: replace virtqueue_add_buf function 34/16934/1
GiWoong Kim [Thu, 27 Feb 2014 07:37:53 +0000 (16:37 +0900)]
maru: replace virtqueue_add_buf function

replace virtqueue_add_buf function with add_inbuf
or add_outbuf

Change-Id: I09224954e1d603ea723bc6e4b7c9d64b9f5fa3df
Signed-off-by: GiWoong Kim <giwoong.kim@samsung.com>
11 years agosensor driver: added virtio sensor device
Jinhyung Choi [Thu, 23 Jan 2014 07:59:42 +0000 (16:59 +0900)]
sensor driver: added virtio sensor device

Change-Id: Id68afed696a04c622c84deb1dc9f70e69fbdf355
Signed-off-by: Jinhyung Choi <jinhyung2.choi@samsung.com>
11 years agovdpram: merge vdpram driver.
Sooyoung Ha [Wed, 22 Jan 2014 05:27:51 +0000 (14:27 +0900)]
vdpram: merge vdpram driver.

merge drivers/char/vdpram.c to 3.10 branch.

Change-Id: I3498343fc7811230c7911f7b219ead917938c91a
Signed-off-by: Sooyoung Ha <yoosah.ha@samsung.com>
11 years agomaru: add NFC, EVDI driver
Munkyu Im [Tue, 21 Jan 2014 08:43:17 +0000 (17:43 +0900)]
maru: add NFC, EVDI driver

Change-Id: Ibe28c591a31039609a5ad1a10ac99cb471e0099b
Signed-off-by: Munkyu Im <munkyu.im@samsung.com>
11 years agobrillcodec: remove deprecated attributes.
Kitae Kim [Tue, 14 Jan 2014 03:09:00 +0000 (12:09 +0900)]
brillcodec: remove deprecated attributes.

The attributes such as __devinit causes compilation errors.
In addition, VM_IO flag is removed because it is set by remap_pfn_range().

Change-Id: I33d69322b304679186fb767948347929600623a4
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: changed module name and config file.
Kitae Kim [Mon, 30 Sep 2013 02:43:50 +0000 (11:43 +0900)]
brillcodec: changed module name and config file.

Change-Id: Idfd67412afcd17bef283bc08867ed409285bd79e
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: add memory disposal routine.
Kitae Kim [Thu, 28 Nov 2013 09:45:28 +0000 (18:45 +0900)]
brillcodec: add memory disposal routine.

When a process has been killed, occupied memory blocks have to be disposed.
In addition to this, add memory disposal routine in case of deinit
to check if there are unleased memory blocks or not.

Change-Id: I6396595497d760cd07290904f4c446838396e7a8
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: fix release memory routine.
Kitae Kim [Thu, 28 Nov 2013 07:27:00 +0000 (16:27 +0900)]
brillcodec: fix release memory routine.

If release memory occurs twice with the same memory offset,
it might cause an error.
semaphore for memory block should be increased in the if-statement.

Change-Id: Ic332eec1e64d5b134b8671b38552b470196e01a0
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: remove unnecessary I/O command.
Kitae Kim [Fri, 22 Nov 2013 10:53:33 +0000 (19:53 +0900)]
brillcodec: remove unnecessary I/O command.

Since file_index is not used to identify codec context,
its i/o command is removed.

Change-Id: Ied7ec997c08eabe9dd981f6bdc359eafc2df81f9
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: unified I/O commands between gst-plugins-emulator and this driver.
Kitae Kim [Wed, 20 Nov 2013 08:13:59 +0000 (17:13 +0900)]
brillcodec: unified I/O commands between gst-plugins-emulator and this driver.

Include write operation in ioctl operation as per its functionality because
using both ioctl and write operation might be confusing to understand control flow.

Change-Id: Iac5445f0e15282f40561cfb62f01db90af803c7e
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: added functions to manage context_id.
Kitae Kim [Tue, 19 Nov 2013 06:53:24 +0000 (15:53 +0900)]
brillcodec: added functions to manage context_id.

This driver does not need to use struct file pointer as a unique id,
because applications derived from gst-plugins-emulator use one file descriptor per a process,
So, it needs to manage id of codec context per a process.

Change-Id: I1a15a602674e5abe0fec9899adfa447222fbc360
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: Change a way to protect critical section.
SeokYeon Hwang [Fri, 15 Nov 2013 10:01:46 +0000 (19:01 +0900)]
brillcodec: Change a way to protect critical section.

Change-Id: Ib63f099bb6d2993da6c946bb70123e454b327b8b
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agobrillcodec: Avoid some multi-threading unsafe issue.
SeokYeon Hwang [Wed, 13 Nov 2013 06:01:51 +0000 (15:01 +0900)]
brillcodec: Avoid some multi-threading unsafe issue.

Change-Id: Idc46d39b0c5044b54ef3a2d5778d2bdb19c98a1e
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agobrillcodec: Remove unused command.
SeokYeon Hwang [Tue, 12 Nov 2013 10:34:55 +0000 (19:34 +0900)]
brillcodec: Remove unused command.

Change-Id: I5a41a14300c0028fef15798cfa272ecf351741b0
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agobrillcodec: enhancement logic about using direct buffer.
SeokYeon Hwang [Tue, 12 Nov 2013 08:15:09 +0000 (17:15 +0900)]
brillcodec: enhancement logic about using direct buffer.

Use a device buffer wisely.
Adjust numbers of buffers.

Change-Id: I726c76ddee4c99d12f7a3b6f629508e227ad4d62
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agobrillcodec: change major ioctl command.
SeokYeon Hwang [Wed, 6 Nov 2013 07:29:37 +0000 (16:29 +0900)]
brillcodec: change major ioctl command.

1. Memory block is chosen by device driver depending on buffer size.
2. Reduce number of ioctl commands.
3. Introduce "try_secure_mem" and source clean-up.

Change-Id: Ie67cb2c2e382322cc842a0bb3af5aca42286577b
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agobrillcodec: source clean-up and store each codec information
Kitae Kim [Thu, 24 Oct 2013 16:44:40 +0000 (01:44 +0900)]
brillcodec: source clean-up and store each codec information

When a process tried to use codec at first, codec device from qemu
copied codec information such as name, media type and etc.
In addtion to this, codec set is determined at libav compile time.
That's why driver stores codec information as a cache.

Change-Id: I4c4734301bc12419ee92d789ddd35d2bc3348cc3
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: disable debug messages.
Kitae Kim [Thu, 24 Oct 2013 05:30:20 +0000 (14:30 +0900)]
brillcodec: disable debug messages.

Debug messages might affect performance, especially on Windows
even if the messages are not printed into klog file.

Change-Id: I11ee2dc9d3173e64267de1c6076f0dd3b0d599e9
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: handle flush_buffer routine.
Kitae Kim [Fri, 18 Oct 2013 02:52:02 +0000 (11:52 +0900)]
brillcodec: handle flush_buffer routine.

Change-Id: I414167e8e14145a1b71d892e8492da60de8983c4
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agobrillcodec: Source clean-up and rename device name.
Kitae Kim [Wed, 11 Sep 2013 11:42:50 +0000 (20:42 +0900)]
brillcodec: Source clean-up and rename device name.

Changed the driver name from newcodec to brillcodec.

Change-Id: I5630c18507c31e79995ed29bd6a736bdcaff10ba
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: source clean-up.
Kitae Kim [Thu, 5 Sep 2013 02:39:10 +0000 (11:39 +0900)]
new_codec: source clean-up.

Change-Id: Iebc004176bef6ce96edd0aa1eba75c00f30372a7
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: modified the method of memory usage to improve performance.
Kitae Kim [Sun, 1 Sep 2013 13:32:28 +0000 (22:32 +0900)]
new_codec: modified the method of memory usage to improve performance.

Separate the memory to use effectively from several regions
when processing mutli contexts.

Change-Id: I4e4269d31aac6ad5ba53e76eedb7c4733e8e95db
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: changed a way to look up available memory block.
Kitae Kim [Thu, 22 Aug 2013 05:31:07 +0000 (14:31 +0900)]
new_codec: changed a way to look up available memory block.

Use a list instead of an array to manage device memory.
In addition, remove useless source in this moudle.

Change-Id: I2f421c8d786ae5edb623713922279d64fe9f8ba2
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: changed cmd messages and source clean-up.
Kitae Kim [Thu, 16 May 2013 01:30:30 +0000 (10:30 +0900)]
new_codec: changed cmd messages and source clean-up.

get version of device module during probing driver.
And remove or change cmd messages.

Change-Id: I09964c7b5a1bdda90b19d6b742f903245e102ef2
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: improved performance as codec reduced the number of memory copies.
SeokYeon Hwang [Wed, 15 May 2013 12:34:54 +0000 (21:34 +0900)]
new_codec: improved performance as codec reduced the number of memory copies.

When giving decoded outbuffer to plugin of user process from device,
use device memory region directly as an buffer to reduce memcpy overheads.

Change-Id: If440dcf304affc47ca4ec2d596a60e2e51963fef
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agonew_codec: change lock routine between user and kernel.
Kitae Kim [Sat, 11 May 2013 08:56:21 +0000 (17:56 +0900)]
new_codec: change lock routine between user and kernel.

Change-Id: Ic82cd689872b862c875a04368a0228313cfa9147
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: modified wrong value assignment.
Kitae Kim [Fri, 10 May 2013 05:02:04 +0000 (14:02 +0900)]
new_codec: modified wrong value assignment.

Change-Id: I6794d820c4b58538bf4ffa6d125460f4dca48f38
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: change device_id
Kitae Kim [Fri, 10 May 2013 02:55:11 +0000 (11:55 +0900)]
new_codec: change device_id

pci_device_id was wrong.

Change-Id: I79f9bb8d124cafd390d4e362a7f3087a7546ed90
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: changed a way to copy data between guest and host.
Kitae Kim [Fri, 10 May 2013 02:24:15 +0000 (11:24 +0900)]
new_codec: changed a way to copy data between guest and host.

Use mutex to reduce frequent context switching from user to kernel.
And removed a routine that occupies device memory exclusively.

Change-Id: I4cb8e0a255bafb3fec6b01307ad31ddc6666ce64
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: change log macro.
Kitae Kim [Wed, 8 May 2013 14:27:29 +0000 (23:27 +0900)]
new_codec: change log macro.

Change-Id: Ia04178bcfa80ab8904bc62c36b0d293539ec31ef
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: source clean-up
Kitae Kim [Fri, 19 Apr 2013 02:52:00 +0000 (11:52 +0900)]
new_codec: source clean-up

Removed unnecessary sources and added a way to check null pointer.

Change-Id: Ib8fef0c7d63921d31265dc12e5e9ca07b893816c
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: remove unnecessary whitespaces and code.
Kitae Kim [Thu, 28 Mar 2013 03:06:48 +0000 (12:06 +0900)]
new_codec: remove unnecessary whitespaces and code.

Change-Id: Ie5f8351ea4ee783c2e78b121326bad9e21658c12
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agonew_codec: added new codec driver module.
Kitae Kim [Tue, 12 Mar 2013 10:50:04 +0000 (19:50 +0900)]
new_codec: added new codec driver module.

Change-Id: I11f4959d4abbddd4aff33aea5812fe700aafdb72
Signed-off-by: Kitae Kim <kt920.kim@samsung.com>
11 years agokeyboard: added Maru virtio keyboard driver
GiWoong Kim [Thu, 9 Jan 2014 07:10:50 +0000 (16:10 +0900)]
keyboard: added Maru virtio keyboard driver

Change-Id: I9372dee6c75e6580cbf944e0a3c3f41610c822c3
Signed-off-by: GiWoong Kim <giwoong.kim@samsung.com>
11 years agohwkey: added Maru virtio hwkey driver
GiWoong Kim [Thu, 9 Jan 2014 03:14:24 +0000 (12:14 +0900)]
hwkey: added Maru virtio hwkey driver

Change-Id: I90f8409eb62c2b52f9c9787f88d3df450ca4db45
Signed-off-by: GiWoong Kim <giwoong.kim@samsung.com>
11 years agotouchscreen: modified input_mt_init_slots argument
GiWoong Kim [Wed, 8 Jan 2014 06:57:29 +0000 (15:57 +0900)]
touchscreen: modified input_mt_init_slots argument

Depending on the flags set, it also performs pointer
emulation and frame synchronization.

Change-Id: I600bb335a8839fdb2c9860503e2244bbfdd709ff
Signed-off-by: GiWoong Kim <giwoong.kim@samsung.com>
Conflicts:
drivers/maru/maru_virtio_touchscreen.c

11 years agovirtio: added Maru device ids
GiWoong Kim [Wed, 8 Jan 2014 06:56:01 +0000 (15:56 +0900)]
virtio: added Maru device ids

Change-Id: Ia6b3ae3412bb936d3302410364b211c1f629b34f
Signed-off-by: GiWoong Kim <giwoong.kim@samsung.com>
11 years agoAdd "maru virtio touchscreen" to build.
SeokYeon Hwang [Wed, 8 Jan 2014 05:04:48 +0000 (14:04 +0900)]
Add "maru virtio touchscreen" to build.

Change-Id: I133b224afdabc8d11de086ad19c1615bf1e719d5
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
11 years agoPrepare initial structure for maru
SeokYeon Hwang [Wed, 8 Jan 2014 04:58:06 +0000 (13:58 +0900)]
Prepare initial structure for maru

Change-Id: I4a6f9d3d862a85668917e058f28d3936dd4fed57
Signed-off-by: SeokYeon Hwang <syeon.hwang@samsung.com>
Conflicts:
drivers/Kconfig
drivers/Makefile

11 years agoLinux 3.12.13
Greg Kroah-Hartman [Sat, 22 Feb 2014 21:32:50 +0000 (13:32 -0800)]
Linux 3.12.13

11 years agoEDAC: Correct workqueue setup path
Borislav Petkov [Wed, 12 Feb 2014 17:15:00 +0000 (18:15 +0100)]
EDAC: Correct workqueue setup path

commit cb6ef42e516cb8948f15e4b70dc03af8020050a2 upstream.

We're using edac_mc_workq_setup() both on the init path, when
we load an edac driver and when we change the polling period
(edac_mc_reset_delay_period) through /sys/.../edac_mc_poll_msec.

On that second path we don't need to init the workqueue which has been
initialized already.

Thanks to Tejun for workqueue insights.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoEDAC: Poll timeout cannot be zero, p2
Borislav Petkov [Mon, 3 Feb 2014 20:05:13 +0000 (15:05 -0500)]
EDAC: Poll timeout cannot be zero, p2

commit 9da21b1509d8aa7ab4846722817d16c72d656c91 upstream.

Sanitize code even more to accept unsigned longs only and to not allow
polling intervals below 1 second as this is unnecessary and doesn't make
much sense anyway for polling errors.

Signed-off-by: Borislav Petkov <bp@suse.de>
Link: http://lkml.kernel.org/r/1391457913-881-1-git-send-email-prarit@redhat.com
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agodrivers/edac/edac_mc_sysfs.c: poll timeout cannot be zero
Prarit Bhargava [Mon, 10 Feb 2014 22:25:43 +0000 (14:25 -0800)]
drivers/edac/edac_mc_sysfs.c: poll timeout cannot be zero

commit 79040cad3f8235937e229f1b9401ba36dd5ad69b upstream.

If you do

  echo 0 > /sys/module/edac_core/parameters/edac_mc_poll_msec

the following stack trace is output because the edac module is not
designed to poll with a timeout of zero.

  WARNING: CPU: 12 PID: 0 at lib/list_debug.c:33 __list_add+0xac/0xc0()
  list_add corruption. prev->next should be next (ffff8808291dd1b8), but was           (null). (prev=ffff8808286fe3f8).
  Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod
  CPU: 12 PID: 0 Comm: swapper/12 Not tainted 3.13.0+ #1
  Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
  Call Trace:
   <IRQ>
    __list_add+0xac/0xc0
    __internal_add_timer+0xab/0x130
    internal_add_timer+0x17/0x40
    mod_timer_pinned+0xca/0x170
    intel_pstate_timer_func+0x28a/0x380
    call_timer_fn+0x36/0x100
    run_timer_softirq+0x1ff/0x2f0
    __do_softirq+0xf5/0x2e0
    irq_exit+0x10d/0x120
    smp_apic_timer_interrupt+0x45/0x60
    apic_timer_interrupt+0x6d/0x80
   <EOI>
    cpuidle_idle_call+0xb9/0x1f0
    arch_cpu_idle+0xe/0x30
    cpu_startup_entry+0x9e/0x240
    start_secondary+0x1e4/0x290

  kernel BUG at kernel/timer.c:1084!
  invalid opcode: 0000 [#1] SMP
  Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod
  CPU: 12 PID: 0 Comm: swapper/12 Tainted: G        W    3.13.0+ #1
  Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
  Call Trace:
   <IRQ>
    run_timer_softirq+0x245/0x2f0
    __do_softirq+0xf5/0x2e0
    irq_exit+0x10d/0x120
    smp_apic_timer_interrupt+0x45/0x60
    apic_timer_interrupt+0x6d/0x80
   <EOI>
    cpuidle_idle_call+0xb9/0x1f0
    arch_cpu_idle+0xe/0x30
    cpu_startup_entry+0x9e/0x240
    start_secondary+0x1e4/0x290
  RIP   cascade+0x93/0xa0

  WARNING: CPU: 36 PID: 1154 at kernel/workqueue.c:1461 __queue_delayed_work+0xed/0x1a0()
  Modules linked in: sg nfsv3 rpcsec_gss_krb5 nfsv4 dns_resolver nfs fscache cfg80211 rfkill x86_pkg_temp_thermal coretemp kvm_intel kvm ixgbe e1000e crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel aesni_intel lrw gf128mul glue_helper ablk_helper cryptd iTCO_wdt ptp sb_edac iTCO_vendor_support pps_core mdio ipmi_devintf edac_core ioatdma microcode shpchp lpc_ich pcspkr i2c_i801 dca mfd_core ipmi_si wmi ipmi_msghandler nfsd auth_rpcgss nfs_acl lockd sunrpc xfs libcrc32c sd_mod sr_mod cdrom crc_t10dif crct10dif_common mgag200 syscopyarea sysfillrect sysimgblt isci i2c_algo_bit drm_kms_helper ttm drm libsas ahci libahci scsi_transport_sas libata i2c_core dm_mirror dm_region_hash dm_log dm_mod
  CPU: 36 PID: 1154 Comm: kworker/u481:3 Tainted: G        W    3.13.0+ #1
  Hardware name: Intel Corporation LH Pass ........../SVRBD-ROW_T, BIOS SE5C600.86B.01.08.0003.022620131521 02/26/2013
  Workqueue: edac-poller edac_mc_workq_function [edac_core]
  Call Trace:
    dump_stack+0x45/0x56
    warn_slowpath_common+0x7d/0xa0
    warn_slowpath_null+0x1a/0x20
    __queue_delayed_work+0xed/0x1a0
    queue_delayed_work_on+0x27/0x50
    edac_mc_workq_function+0x72/0xa0 [edac_core]
    process_one_work+0x17b/0x460
    worker_thread+0x11b/0x400
    kthread+0xd2/0xf0
    ret_from_fork+0x7c/0xb0

This patch adds a range check in the edac_mc_poll_msec code to check for 0.

Signed-off-by: Prarit Bhargava <prarit@redhat.com>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Mauro Carvalho Chehab <mchehab@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agogenirq: Add missing irq_to_desc export for CONFIG_SPARSE_IRQ=n
Paul Gortmaker [Mon, 10 Feb 2014 18:39:53 +0000 (13:39 -0500)]
genirq: Add missing irq_to_desc export for CONFIG_SPARSE_IRQ=n

commit 2c45aada341121438affc4cb8d5b4cfaa2813d3d upstream.

In allmodconfig builds for sparc and any other arch which does
not set CONFIG_SPARSE_IRQ, the following will be seen at modpost:

  CC [M]  lib/cpu-notifier-error-inject.o
  CC [M]  lib/pm-notifier-error-inject.o
ERROR: "irq_to_desc" [drivers/gpio/gpio-mcp23s08.ko] undefined!
make[2]: *** [__modpost] Error 1

This happens because commit 3911ff30f5 ("genirq: export
handle_edge_irq() and irq_to_desc()") added one export for it, but
there were actually two instances of it, in an if/else clause for
CONFIG_SPARSE_IRQ.  Add the second one.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Link: http://lkml.kernel.org/r/1392057610-11514-1-git-send-email-paul.gortmaker@windriver.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotarget: Fix free-after-use regression in PR unregister
Nicholas Bellinger [Thu, 30 Jan 2014 21:08:49 +0000 (13:08 -0800)]
target: Fix free-after-use regression in PR unregister

commit fc09149df6e20cfbb0bb86f10899607c321a31eb upstream.

This patch addresses a >= v3.11 free-after-use regression
in core_scsi3_emulate_pro_register() that was introduced
in the following commit:

commit bc118fe4c4a8cfa453491ba77c0a146a6d0e73e0
Author: Andy Grover <agrover@redhat.com>
Date:   Thu May 16 10:41:04 2013 -0700

    target: Further refactoring of core_scsi3_emulate_pro_register()

To avoid the free-after-use, save an type value before hand, and
only call core_scsi3_put_pr_reg() with a valid *pr_reg.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Andy Grover <agrover@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoring-buffer: Fix first commit on sub-buffer having non-zero delta
Steven Rostedt (Red Hat) [Tue, 11 Feb 2014 18:38:54 +0000 (13:38 -0500)]
ring-buffer: Fix first commit on sub-buffer having non-zero delta

commit d651aa1d68a2f0a7ee65697b04c6a92f8c0a12f2 upstream.

Each sub-buffer (buffer page) has a full 64 bit timestamp. The events on
that page use a 27 bit delta against that timestamp in order to save on
bits written to the ring buffer. If the time between events is larger than
what the 27 bits can hold, a "time extend" event is added to hold the
entire 64 bit timestamp again and the events after that hold a delta from
that timestamp.

As a "time extend" is always paired with an event, it is logical to just
allocate the event with the time extend, to make things a bit more efficient.

Unfortunately, when the pairing code was written, it removed the "delta = 0"
from the first commit on a page, causing the events on the page to be
slightly skewed.

Fixes: 69d1b839f7ee "ring-buffer: Bind time extend and data events together"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agopower: max17040: Fix NULL pointer dereference when there is no platform_data
Krzysztof Kozlowski [Thu, 30 Jan 2014 13:32:45 +0000 (14:32 +0100)]
power: max17040: Fix NULL pointer dereference when there is no platform_data

commit ac323d8d807060f7c95a685a9fe861e7b6300993 upstream.

Fix NULL pointer dereference of "chip->pdata" if platform_data was not
supplied to the driver.

The driver during probe stored the pointer to the platform_data:
chip->pdata = client->dev.platform_data;
Later it was dereferenced in max17040_get_online() and
max17040_get_status().

If platform_data was not supplied, the NULL pointer exception would
happen:

[    6.626094] Unable to handle kernel  of a at virtual address 00000000
[    6.628557] pgd = c0004000
[    6.632868] [00000000] *pgd=66262564
[    6.634636] Unable to handle kernel paging request at virtual address e6262000
[    6.642014] pgd = de468000
[    6.644700] [e6262000] *pgd=00000000
[    6.648265] Internal error: Oops: 5 [#1] PREEMPT SMP ARM
[    6.653552] Modules linked in:
[    6.656598] CPU: 0 PID: 31 Comm: kworker/0:1 Not tainted 3.10.14-02717-gc58b4b4 #505
[    6.664334] Workqueue: events max17040_work
[    6.668488] task: dfa11b80 ti: df9f6000 task.ti: df9f6000
[    6.673873] PC is at show_pte+0x80/0xb8
[    6.677687] LR is at show_pte+0x3c/0xb8
[    6.681503] pc : [<c001b7b8>]    lr : [<c001b774>]    psr: 600f0113
[    6.681503] sp : df9f7d58  ip : 600f0113  fp : 00000009
[    6.692965] r10: 00000000  r9 : 00000000  r8 : dfa11b80
[    6.698171] r7 : df9f7ea0  r6 : e6262000  r5 : 00000000  r4 : 00000000
[    6.704680] r3 : 00000000  r2 : e6262000  r1 : 600f0193  r0 : c05b3750
[    6.711194] Flags: nZCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment kernel
[    6.718485] Control: 10c53c7d  Table: 5e46806a  DAC: 00000015
[    6.724218] Process kworker/0:1 (pid: 31, stack limit = 0xdf9f6238)
[    6.730465] Stack: (0xdf9f7d58 to 0xdf9f8000)
[    6.914325] [<c001b7b8>] (show_pte+0x80/0xb8) from [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74)
[    6.923425] [<c047107c>] (__do_kernel_fault.part.9+0x44/0x74) from [<c001bb7c>] (do_page_fault+0x2c4/0x360)
[    6.933144] [<c001bb7c>] (do_page_fault+0x2c4/0x360) from [<c0008400>] (do_DataAbort+0x34/0x9c)
[    6.941825] [<c0008400>] (do_DataAbort+0x34/0x9c) from [<c000e5d8>] (__dabt_svc+0x38/0x60)
[    6.950058] Exception stack(0xdf9f7ea0 to 0xdf9f7ee8)
[    6.955099] 7ea0: df0c1790 00000000 00000002 00000000 df0c1794 df0c1790 df0c1790 00000042
[    6.963271] 7ec0: df0c1794 00000001 00000000 00000009 00000000 df9f7ee8 c0306268 c0306270
[    6.971419] 7ee0: a00f0113 ffffffff
[    6.974902] [<c000e5d8>] (__dabt_svc+0x38/0x60) from [<c0306270>] (max17040_work+0x8c/0x144)
[    6.983317] [<c0306270>] (max17040_work+0x8c/0x144) from [<c003f364>] (process_one_work+0x138/0x440)
[    6.992429] [<c003f364>] (process_one_work+0x138/0x440) from [<c003fa64>] (worker_thread+0x134/0x3b8)
[    7.001628] [<c003fa64>] (worker_thread+0x134/0x3b8) from [<c00454bc>] (kthread+0xa4/0xb0)
[    7.009875] [<c00454bc>] (kthread+0xa4/0xb0) from [<c000eb28>] (ret_from_fork+0x14/0x2c)
[    7.017943] Code: e1a03005 e2422480 e0826104 e59f002c (e7922104)
[    7.024017] ---[ end trace 73bc7006b9cc5c79 ]---

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Fixes: c6f4a42de60b981dd210de01cd3e575835e3158e
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agotime: Fix overflow when HZ is smaller than 60
Mikulas Patocka [Fri, 24 Jan 2014 21:41:36 +0000 (16:41 -0500)]
time: Fix overflow when HZ is smaller than 60

commit 80d767d770fd9c697e434fd080c2db7b5c60c6dd upstream.

When compiling for the IA-64 ski emulator, HZ is set to 32 because the
emulation is slow and we don't want to waste too many cycles processing
timers. Alpha also has an option to set HZ to 32.

This causes integer underflow in
kernel/time/jiffies.c:
kernel/time/jiffies.c:66:2: warning: large integer implicitly truncated to unsigned type [-Woverflow]
  .mult  = NSEC_PER_JIFFY << JIFFIES_SHIFT, /* details above */
  ^

This patch reduces the JIFFIES_SHIFT value to avoid the overflow.

Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Link: http://lkml.kernel.org/r/alpine.LRH.2.02.1401241639100.23871@file01.intranet.prod.int.rdu2.redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agoi2c: mv64xxx: refactor message start to ensure proper initialization
Wolfram Sang [Thu, 13 Feb 2014 20:36:29 +0000 (21:36 +0100)]
i2c: mv64xxx: refactor message start to ensure proper initialization

commit 79970db213344b4a4034645db5ebfc31571f3fa3 upstream.

Because the offload mechanism can fall back to a standard transfer,
having two seperate initialization states is unfortunate. Let's just
have one state which does things consistently. This fixes a bug where
some preparation was missing when the fallback happened. And it makes
the code much easier to follow. To implement this, we put the check
if offload is possible at the top of the offload setup function.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Tested-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
Fixes: 930ab3d403ae (i2c: mv64xxx: Add I2C Transaction Generator support)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agomd/raid5: Fix CPU hotplug callback registration
Oleg Nesterov [Wed, 5 Feb 2014 22:12:45 +0000 (03:42 +0530)]
md/raid5: Fix CPU hotplug callback registration

commit 789b5e0315284463617e106baad360cb9e8db3ac upstream.

Subsystems that want to register CPU hotplug callbacks, as well as perform
initialization for the CPUs that are already online, often do it as shown
below:

get_online_cpus();

for_each_online_cpu(cpu)
init_cpu(cpu);

register_cpu_notifier(&foobar_cpu_notifier);

put_online_cpus();

This is wrong, since it is prone to ABBA deadlocks involving the
cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently
with CPU hotplug operations).

Interestingly, the raid5 code can actually prevent double initialization and
hence can use the following simplified form of callback registration:

register_cpu_notifier(&foobar_cpu_notifier);

get_online_cpus();

for_each_online_cpu(cpu)
init_cpu(cpu);

put_online_cpus();

A hotplug operation that occurs between registering the notifier and calling
get_online_cpus(), won't disrupt anything, because the code takes care to
perform the memory allocations only once.

So reorganize the code in raid5 this way to fix the deadlock with callback
registration.

Cc: linux-raid@vger.kernel.org
Fixes: 36d1c6476be51101778882897b315bd928c8c7b5
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
[Srivatsa: Fixed the unregister_cpu_notifier() deadlock, added the
free_scratch_buffer() helper to condense code further and wrote the changelog.]
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
11 years agomd/raid1: restore ability for check and repair to fix read errors.
NeilBrown [Wed, 5 Feb 2014 01:17:01 +0000 (12:17 +1100)]
md/raid1: restore ability for check and repair to fix read errors.

commit 1877db75589a895bbdc4c4c3f23558e57b521141 upstream.

commit 30bc9b53878a9921b02e3b5bc4283ac1c6de102a
    md/raid1: fix bio handling problems in process_checks()

Move the bio_reset() to a point before where BIO_UPTODATE is checked,
so that check now always report that the bio is uptodate, even if it is not.

This causes process_check() to sometimes treat read-errors as
successful matches so the good data isn't written out.

This patch preserves the flag until it is needed.

Bug was introduced in 3.11, but backported to 3.10-stable (as it fixed
an even worse bug).  So suitable for any -stable since 3.10.

Reported-and-tested-by: Michael Tokarev <mjt@tls.msk.ru>
Fixed: 30bc9b53878a9921b02e3b5bc4283ac1c6de102a
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>