- 09 12月, 2013 1 次提交
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由 Ricardo Ribalda 提交于
vb2_fop_release does not hold the lock although it is modifying the queue->owner field. This could lead to race conditions on the vb2_perform_io function when multiple applications are accessing the video device via read/write API: [ 308.297741] BUG: unable to handle kernel NULL pointer dereference at 0000000000000260 [ 308.297759] IP: [<ffffffffa07a9fd2>] vb2_perform_fileio+0x372/0x610 [videobuf2_core] [ 308.297794] PGD 159719067 PUD 158119067 PMD 0 [ 308.297812] Oops: 0000 #1 SMP [ 308.297826] Modules linked in: qt5023_video videobuf2_dma_sg qtec_xform videobuf2_vmalloc videobuf2_memops videobuf2_core qtec_white qtec_mem gpio_xilinx qtec_cmosis qtec_pcie fglrx(PO) spi_xilinx spi_bitbang qt5023 [ 308.297888] CPU: 1 PID: 2189 Comm: java Tainted: P O 3.11.0-qtec-standard #1 [ 308.297919] Hardware name: QTechnology QT5022/QT5022, BIOS PM_2.1.0.309 X64 05/23/2013 [ 308.297952] task: ffff8801564e1690 ti: ffff88014dc02000 task.ti: ffff88014dc02000 [ 308.297962] RIP: 0010:[<ffffffffa07a9fd2>] [<ffffffffa07a9fd2>] vb2_perform_fileio+0x372/0x610 [videobuf2_core] [ 308.297985] RSP: 0018:ffff88014dc03df8 EFLAGS: 00010202 [ 308.297995] RAX: 0000000000000000 RBX: ffff880158a23000 RCX: dead000000100100 [ 308.298003] RDX: 0000000000000000 RSI: dead000000200200 RDI: 0000000000000000 [ 308.298012] RBP: ffff88014dc03e58 R08: 0000000000000000 R09: 0000000000000001 [ 308.298020] R10: ffffea00051e8380 R11: ffff88014dc03fd8 R12: ffff880158a23070 [ 308.298029] R13: ffff8801549040b8 R14: 0000000000198000 R15: 0000000001887e60 [ 308.298040] FS: 00007f65130d5700(0000) GS:ffff88015ed00000(0000) knlGS:0000000000000000 [ 308.298049] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 308.298057] CR2: 0000000000000260 CR3: 0000000159630000 CR4: 00000000000007e0 [ 308.298064] Stack: [ 308.298071] ffff880156416c00 0000000000198000 0000000000000000 ffff880100000001 [ 308.298087] ffff88014dc03f50 00000000810a79ca 0002000000000001 ffff880154904718 [ 308.298101] ffff880156416c00 0000000000198000 ffff880154904338 ffff88014dc03f50 [ 308.298116] Call Trace: [ 308.298143] [<ffffffffa07aa3c4>] vb2_read+0x14/0x20 [videobuf2_core] [ 308.298198] [<ffffffffa07aa494>] vb2_fop_read+0xc4/0x120 [videobuf2_core] [ 308.298252] [<ffffffff8154ee9e>] v4l2_read+0x7e/0xc0 [ 308.298296] [<ffffffff8116e639>] vfs_read+0xa9/0x160 [ 308.298312] [<ffffffff8116e882>] SyS_read+0x52/0xb0 [ 308.298328] [<ffffffff81784179>] tracesys+0xd0/0xd5 [ 308.298335] Code: e5 d6 ff ff 83 3d be 24 00 00 04 89 c2 4c 8b 45 b0 44 8b 4d b8 0f 8f 20 02 00 00 85 d2 75 32 83 83 78 03 00 00 01 4b 8b 44 c5 48 <8b> 88 60 02 00 00 85 c9 0f 84 b0 00 00 00 8b 40 58 89 c2 41 89 [ 308.298487] RIP [<ffffffffa07a9fd2>] vb2_perform_fileio+0x372/0x610 [videobuf2_core] [ 308.298507] RSP <ffff88014dc03df8> [ 308.298514] CR2: 0000000000000260 [ 308.298526] ---[ end trace e8f01717c96d1e41 ]--- Signed-off-by: NRicardo Ribalda <ricardo.ribalda@gmail.com> Acked-by: NHans Verkuil <hans.verkuil@cisco.com> Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 05 12月, 2013 1 次提交
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由 Sylwester Nawrocki 提交于
This patch adds ioctl helpers to the V4L2 mem-to-mem API, so we can avoid several ioctl handlers in the mem-to-mem video node drivers that are simply a pass-through to the v4l2_m2m_* calls. These helpers will only be useful for drivers that use same mutex for both OUTPUT and CAPTURE queue, which is the case for all currently in tree v4l2 m2m drivers. In order to use the helpers the drivers are required to use struct v4l2_fh. Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Acked-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 04 12月, 2013 1 次提交
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由 Sergio Aguirre 提交于
This adds a very simplistic driver to utilize the CSI2A interface inside the ISS subsystem in OMAP4, and dump the data to memory. Check Documentation/video4linux/omap4_camera.txt for details. This commit adds the driver core, registers definitions and documentation. Signed-off-by: NSergio Aguirre <sergio.a.aguirre@gmail.com> Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <mchehab@redhat.com>
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- 30 11月, 2013 1 次提交
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由 Philipp Zabel 提交于
Currently it is not possible for userspace to map a DMABUF exported buffer with write permissions. This patch allows to also pass O_RDONLY/O_RDWR when exporting the buffer, so that userspace may map it with write permissions. Signed-off-by: NPhilipp Zabel <p.zabel@pengutronix.de> Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 31 10月, 2013 8 次提交
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由 Laurent Pinchart 提交于
The helper function is defined by a macro that is erroneously called with the compose rectangle instead of the crop rectangle. Fix it. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: NSakari Ailus <sakari.ailus@iki.fi> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Daniel Jeong 提交于
Adds the driver for the LM3560, dual LED Flash The LM3560 has two 1A constant current driver for high current white LEDs. It is controlled via an I2C compatible interface(up to 400kHz). Each flash brightness, torch brightness and enable/disable can be controlled independantly, but flash timeout and operation mode are shared. Signed-off-by: NDaniel Jeong <gshark.jeong@gmail.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Guennadi Liakhovetski 提交于
Some non soc-camera drivers, e.g. em28xx, use subdevice drivers, originally written for soc-camera, which use soc_camera_power_on() and soc_camera_power_off() helpers to implement their .s_power() methods. Those helpers in turn can enable and disable a clock, if it is supplied to them as a parameter. This works well when camera host drivers balance their calls to subdevices' .s_power() methods. However, some such drivers fail to do that, which leads to unbalanced calls to v4l2_clk_enable() / v4l2_clk_disable(), which then in turn produce kernel warnings. Such behaviour is wrong and should be fixed, however, sometimes it is difficult, because some of those drivers are rather old and use lots of subdevices, which all should be tested after such a fix. To support such drivers this patch adds a work-around, allowing host drivers or platforms to set a flag, in which case soc-camera helpers will only enable the clock, if it is disabled, and disable it only once on the first call to .s_power(0). Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Guennadi Liakhovetski 提交于
To obtain a clock reference consumers supply their device object to the V4L2 clock framework. The latter then uses the consumer device name to find a matching clock. For that to work V4L2 clock providers have to provide the same device name, when registering clocks. This patch adds a helper macro to generate a suitable device name for I2C devices. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Guennadi Liakhovetski 提交于
Many bridges and video host controllers supply fixed rate always on clocks to their I2C devices. This patch adds two simple helpers to register and unregister such a clock. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Guennadi Liakhovetski 提交于
This prepares soc-camera to use struct v4l2_subdev_platform_data for its subdevice-facing API, which would allow subdevice driver re-use. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Guennadi Liakhovetski 提交于
This struct shall be used by subdevice drivers to pass per-subdevice data, e.g. power supplies, to generic V4L2 methods, at the same time allowing optional host-specific extensions via the host_priv pointer. To avoid having to pass two pointers to those methods, add a pointer to this new struct to struct v4l2_subdev. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Guennadi Liakhovetski 提交于
BUG*() and WARN*() macros specify their conditions as unlikely, using BUG_ON(unlikely(condition)) is redundant, remove it. Signed-off-by: NGuennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 17 10月, 2013 4 次提交
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由 Laurent Pinchart 提交于
struct v4l2_fh has an enum v4l2_priority field. Make sure the enum definition is available by including linux/videodev2.h. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Laurent Pinchart 提交于
v4l2-fh.h dereferences struct file, the structure must thus be defined. Pull in its definition by including linux/fs.h. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Sylwester Nawrocki 提交于
Remove the redundant 'const' qualifiers from the function signature and from the qmenu_int arrays' declarations. Reported-by: NFengguang Wu <fengguang.wu@intel.com> Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Frank Schaefer 提交于
Signed-off-by: NFrank Schäfer <fschaefer.oss@googlemail.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 04 10月, 2013 1 次提交
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由 Lars-Peter Clausen 提交于
The 'driver' field of the i2c_client struct is redundant and is going to be removed. The results of the expressions 'client->driver.driver->field' and 'client->dev.driver->field' are identical, so replace all occurrences of the former with the later. Signed-off-by: NLars-Peter Clausen <lars@metafoo.de> Acked-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NWolfram Sang <wsa@the-dreams.de>
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- 26 9月, 2013 2 次提交
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由 Ricardo Ribalda 提交于
Replace the private struct vb2_dma_sg_desc with the struct sg_table so we can benefit from all the helping functions in lib/scatterlist.c for things like allocating the sg or compacting the descriptor. marvel-ccic and solo6x10 drivers, that use this API have been updated. Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com> Reviewed-by: NAndre Heider <a.heider@gmail.com> Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com> [s.nawrocki@samsung.com: minor corrections of the changelog] Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Ricardo Ribalda 提交于
struct v4_file_operations defines the data param as const char __user *data but on vb2 is defined as char __user *data. This patch fixes the warnings produced by this. ie: drivers/qtec/qtec_xform.c:817:2: warning: initialization from incompatible pointer type [enabled by default] drivers/qtec/qtec_xform.c:817:2: warning: (near initialization for ‘qtec_xform_v4l_fops.write’) [enabled by default] Signed-off-by: NRicardo Ribalda Delgado <ricardo.ribalda@gmail.com> Acked-by: NMarek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 03 9月, 2013 1 次提交
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由 Andrzej Hajda 提交于
This patch fixes following error: include/media/v4l2-ctrls.h:193:15: error: field ‘_lock’ has incomplete type include/media/v4l2-ctrls.h: In function ‘v4l2_ctrl_lock’: include/media/v4l2-ctrls.h:570:2: error: implicit declaration of function ‘mutex_lock’ [-Werror=implicit-function-declaration] include/media/v4l2-ctrls.h: In function ‘v4l2_ctrl_unlock’: include/media/v4l2-ctrls.h:579:2: error: implicit declaration of function ‘mutex_unlock’ [-Werror=implicit-function-declaration] Signed-off-by: NAndrzej Hajda <a.hajda@samsung.com> Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com> Cc: stable@vger.kernel.org
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- 26 8月, 2013 2 次提交
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由 Hans Verkuil 提交于
This is an Analog Devices HDMI transmitter. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
This is a Analog Devices Component/Graphics/SD Digitizer with 2:1 Multiplexed HDMI Receiver. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 24 8月, 2013 6 次提交
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由 Hans Verkuil 提交于
In most cases the v4l2_bt_timings_cap struct has all the information necessary to determine valid timings, but occasionally there are exceptions. Add a callback function to be able to test for those exceptions. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
All other functions follow the v4l2_<foo>_dv_timings pattern, do the same for this function. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
Some drivers need to be able to access the full list of timings. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
It's the only function in v4l2-dv-timings.c with the v4l prefix instead of v4l2. Make it consistent with the other functions. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
Drivers often have to log the contents of a dv_timings struct. Adding this helper will make it easier for drivers to do so. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Lad, Prabhakar 提交于
This patch adds 'sync-on-green-active' property as part of endpoint property. Signed-off-by: NLad, Prabhakar <prabhakar.csengg@gmail.com> Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 22 8月, 2013 2 次提交
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由 Sakari Ailus 提交于
As the clock framework makes it possible to assign a device specific name to the clocks, remove the ability to use a named clock in the driver. Signed-off-by: NSakari Ailus <sakari.ailus@iki.fi> Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Laurent Pinchart 提交于
Configure the device external clock using the common clock framework instead of a board code callback function. Signed-off-by: NLaurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: NSylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 18 8月, 2013 8 次提交
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由 Mauro Carvalho Chehab 提交于
changeset d1e9b7c1 added a new ancilliary function to API, but forgot to add it to the corresponding header file. drivers/media/v4l2-core/v4l2-ctrls.c:568:18: warning: no previous prototype for 'v4l2_ctrl_get_int_menu' [-Wmissing-prototypes] const s64 const *v4l2_ctrl_get_int_menu(u32 id, u32 *len) Cc: Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Mauro Carvalho Chehab 提交于
changeset 2ccf12af did a crappy job when added multi-line comment lines, violating CodingStyle. Change the comments added there to fulfill CodingStyle, and document the platform_data using Documentation/kernel-doc-nano-HOWTO.txt. Cc: Jon Arne Jørgensen <jonarne@jonarne.no> Cc: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Jon Arne Jørgensen 提交于
This patch implements i2c_board_info.platform_data, and some options to override the default initialization table for the GM7113C and SAA7113 chips. Signed-off-by: NJon Arne Jørgensen <jonarne@jonarne.no> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
v4l2-common.c contained a bunch of dv-timings related functions. Move that to the new v4l2-dv-timings.c which is a more appropriate place for them. There aren't many drivers that do HDTV, so it is a good idea to separate common code related to that into a module of its own. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Acked-by: NLad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Hans Verkuil 提交于
This module makes it easy to filter valid timings from the full list of CEA and DMT timings based on the timings capabilities. Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Acked-by: NLad, Prabhakar <prabhakar.csengg@gmail.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Ondrej Zary 提交于
Move include/sound/tea575x-tuner.h to include/media/tea575x.h and update files that include it. Signed-off-by: NOndrej Zary <linux@rainbow-software.org> Acked-by: NTakashi Iwai <tiwai@suse.de> Signed-off-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Laurent Pinchart 提交于
Explain how the two operations must handle formats and validate buffer sizes when used with VIDIOC_CREATE_BUFS. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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由 Laurent Pinchart 提交于
The graph traversal API (media_entity_graph_walk_*) doesn't support cyclic graphs and will fail to correctly walk a graph when circular links exist. Support circular graph traversal by checking whether an entity has already been visited before pushing it to the stack. Signed-off-by: NLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: NSakari Ailus <sakari.ailus@iki.fi> Acked-by: NHans Verkuil <hans.verkuil@cisco.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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- 03 8月, 2013 1 次提交
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由 Joe Perches 提交于
It's convenient to have ethernet mac addresses use ETH_ALEN to be able to grep for them a bit easier and also to ensure that the addresses are __aligned(2). Add #include <linux/if_ether.h> as necessary. Signed-off-by: NJoe Perches <joe@perches.com> Acked-by: NMauro Carvalho Chehab <m.chehab@samsung.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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- 01 8月, 2013 1 次提交
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由 Srinivas Kandagatla 提交于
The use case is simple, if any rc device has allowed protocols = RC_TYPE_LIRC and map_name = RC_MAP_LIRC set, the driver open will be never called. The reason for this is, all of the key maps except lirc have some KEYS in there map, so during rc_register_device process these keys are matched against the input drivers and open is performed, so for the case of RC_MAP_EMPTY, a vt/keyboard is matched and the driver open is performed. In case of lirc, there is no match and result is that there is no open performed, however the lirc-dev will go ahead and create a /dev/lirc0 node. Now when lircd/mode2 opens this device, no data is available because the driver was never opened. Other case pointed by Sean Young, As rc device gets opened via the input interface. If the input device is never opened (e.g. embedded with no console) then the rc open is never called and lirc will not work either. So that's another case. lirc_dev seems to have no link with actual rc device w.r.t open/close. This patch adds rc_dev pointer to lirc_driver structure for cases like this, so that it can do the open/close of the real driver in accordance to lircd/mode2 open/close. Without this patch its impossible to open a rc device which has RC_TYPE_LIRC ad RC_MAP_LIRC set. Signed-off-by: NSrinivas Kandagatla <srinivas.kandagatla@st.com> Signed-off-by: NMauro Carvalho Chehab <m.chehab@samsung.com>
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