- 09 Dec, 2013 10 commits
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Ricardo Ribalda authored
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:
Ricardo Ribalda <ricardo.ribalda@gmail.com> Acked-by:
Hans Verkuil <hans.verkuil@cisco.com> Acked-by:
Sylwester Nawrocki <s.nawrocki@samsung.com> Signed-off-by:
Mauro Carvalho Chehab <m.chehab@samsung.com>
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Seung-Woo Kim authored
__qbuf_dmabuf checks whether size of provided dmabuf is large enough, and it returns error without any log. So this patch adds error log in the case. Signed-off-by:
Seung-Woo Kim <sw0312.kim@samsung.com> Signed-off-by:
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Ricardo Ribalda authored
According to the doc: If VIDIOC_STREAMON is called when streaming is already in progress, or if VIDIOC_STREAMOFF is called when streaming is already stopped, then the ioctl does nothing and 0 is returned. The current implementation was returning -EINVAL instead. Signed-off-by:
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Ricardo Ribalda authored
num_pages_from_user and buf->num_pages were swapped. Signed-off-by:
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Daniel Jeong authored
Correct reference of reading values. (rval -> reg_val) Add the missing unlock before return from function lm3560_get_ctrl() to avoid deadlock. Thank you Dan Carpenter & Sakari. Signed-off-by:
Daniel Jeong <gshark.jeong@gmail.com> Signed-off-by:
Sakari Ailus <sakari.ailus@iki.fi> Signed-off-by:
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Ricardo Ribalda Delgado authored
internal_csi_format_idx and csi_format_idx are unsigned integers, therefore they can never be nevative. CC drivers/media/i2c/smiapp/smiapp-core.o In file included from include/linux/err.h:4:0, from include/linux/clk.h:15, from drivers/media/i2c/smiapp/smiapp-core.c:29: drivers/media/i2c/smiapp/smiapp-core.c: In function ‘smiapp_update_mbus_formats’: include/linux/kernel.h:669:20: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits] #define min(x, y) ({ \ ^ include/linux/compiler.h:153:42: note: in definition of macro ‘unlikely’ # define unlikely(x) __builtin_expect(!!(x), 0) ^ drivers/media/i2c/smiapp/smiapp-core.c:402:2: note: in expansion of macro ‘BUG_ON’ BUG_ON(min(internal_csi_format_idx, csi_format_idx) < 0); ^ drivers/media/i2c/smiapp/smiapp-core.c:402:9: note: in expansion of macro ‘min’ BUG_ON(min(internal_csi_format_idx, csi_format_idx) < 0); ^ Signed-off-by: -
Hans Verkuil authored
Describe the tasks to be done for this driver to be promoted to a non-staging one. [m.chehab@samsung.com: Add a patch description; add a note about the CodingStyle issues and make sure that the README lines are not bigger than 80 cols.] Signed-off-by:
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Hans Verkuil authored
Add suport for Nokia N900 radio. This driver is far from being ready to be added at the main tree, as it creates its own sysfs interface, and violates lots of Coding Style rules, doing even evil things like returning from a function inside a macro. So, it is being added at staging with the condition that it will be soon be fixed. [m.chehab@samsung.com: added a description for the patch] Signed-off-by:
Eero Nurkkala <ext-eero.nurkkala@nokia.com> Signed-off-by:
Nils Faerber <nils.faerber@kernelconcepts.de> Signed-off-by:
Joni Lapilainen <joni.lapilainen@gmail.com> Signed-off-by:
Pali Rohár <pali.rohar@gmail.com> Signed-off-by:
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Luis Alves authored
This patch should fix/enhance the set_voltage function for the cx24117 demodulator. Signed-off-by:
Luis Alves <ljalvs@gmail.com> Signed-off-by:
Michael Krufky <mkrufky@linuxtv.org> Signed-off-by:
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Luis Alves authored
This patch adds the complete list of all the commands known for the cx24117 demodulator. Signed-off-by:
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- 04 Dec, 2013 15 commits
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Sylwester Nawrocki authored
The fimc_is_hw_wait_intsr0_intsd0() function is currently unused and can be safely removed. The other polling function simplified and ETIME error code is replaced with more commonly used ETIMEDOUT. Signed-off-by:
Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab@redhat.com>
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Roel Kluin authored
In case no valid pixelcode is found, an i of -1 after the loop is out of bounds for the array. Signed-off-by:
Roel Kluin <roel.kluin@gmail.com> Signed-off-by:
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Dan Carpenter authored
This define is only used in s5pcsis_irq_handler(): if ((status & S5PCSIS_INTSRC_NON_IMAGE_DATA) && pktbuf->data) { The problem is that "status" is a 32 bit and (0xff << 28) is larger than 32 bits and that sets off a static checker warning. I consulted with Sylwester Nawrocki and the define should actually be (0xf << 28). Signed-off-by:Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Mateusz Krawczuk authored
Replace clk_enable() by clock_enable_prepare() and clk_disable() with clk_disable_unprepare(). clk_{prepare/unprepare} calls are required by common clock framework and this driver was missed while converting all users of the Samsung original clocks driver to its new implementation based on the common clock API. Signed-off-by:Mateusz Krawczuk <m.krawczuk@partner.samsung.com> Signed-off-by:
Tomasz Stanislawski <t.stanislaws@samsung.com> [s.nawrocki@samsung.com: edited commit description] Signed-off-by:
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Mateusz Krawczuk authored
Replace clk_enable() by clock_enable_prepare() and clk_disable() with clk_disable_unprepare(). clk_{prepare/unprepare} calls are required by common clock framework and this driver was missed while converting all users of the Samsung original clocks driver to its new implementation based on the common clock API. Signed-off-by: -
Mateusz Krawczuk authored
Restore vpll clock rate if start stream fail or stream is off. Signed-off-by:
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Sylwester Nawrocki authored
Simplify the driver by using the m2m ioctl and vb2 helpers. Signed-off-by:
Kamil Debski <k.debski@samsung.com> Signed-off-by:
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Sylwester Nawrocki authored
Simplify the driver by using the m2m ioctl and vb2 helpers. Signed-off-by:
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Sylwester Nawrocki authored
Simplify the FIMC mem-to-mem driver by using the m2m ioctl and vb2 helpers. Signed-off-by:
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Sylwester Nawrocki authored
Simplify the driver by using the m2m ioctl and vb2 helpers. Signed-off-by:
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Sylwester Nawrocki authored
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:
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Sakari Ailus authored
The configuration of many other blocks depend on resizer maximum data rate. Get the value from resizer at link validation time. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by:
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Sakari Ailus authored
Mark pads that must be connected. Signed-off-by:
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Sakari Ailus authored
Do not allow streaming if a pad with MEDIA_PAD_FL_MUST_CONNECT flag is not connected by an active link. This patch makes it possible to avoid drivers having to check for the most common case of link state validation: a sink pad that must be connected. Signed-off-by:
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Sakari Ailus authored
Pads that set this flag must be connected by an active link for the entity to stream. Signed-off-by:
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- 03 Dec, 2013 15 commits
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Laurent Pinchart authored
The ioctl is (at least currently) mandatory. Signed-off-by:
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Laurent Pinchart authored
The pad::get_fmt call must be protected by a mutex, but preparing its arguments doesn't need to be. Move the non-critical code out of the mutex-protected section. Signed-off-by:
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Laurent Pinchart authored
Translating -ENOIOCTLCMD to -EINVAL is invalid, the correct ioctl return value is -ENOTTY. Signed-off-by:
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Laurent Pinchart authored
The remote subdev of any video node in the OMAP4 ISS is an internal subdev that is guaranteed to implement get_fmt. Don't check the return value for -ENOIOCTLCMD, as this can't happen. Signed-off-by:
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Laurent Pinchart authored
Get rid of a goto statement for a simple error path that can be inlined, and split spaghetti error code to a separate section. Signed-off-by:
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Laurent Pinchart authored
The iss_device structure is allocated with kzalloc, there's no need to initialize its fields to 0 explicitly. Signed-off-by:
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Laurent Pinchart authored
Loop counters that can only take positive values should be unsigned. Signed-off-by:
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Laurent Pinchart authored
The functions always succeed, there's no need to return an error value. Signed-off-by:
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Laurent Pinchart authored
The only udelay() call takes place in a sleepable context, we can sleep instead. Use usleep_range(). Signed-off-by:
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Laurent Pinchart authored
The failure variable is initialized with 0 and used as a return value without ever being modified. Remove it and return 0 directly. Signed-off-by:
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Laurent Pinchart authored
The video_unregister_device() function checks if the video device is registered before proceeding, remote the duplicate check from the driver. Signed-off-by:
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Laurent Pinchart authored
Timestamps use the monotonic clock, configure the vb2 queue accordingly. Signed-off-by:
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Laurent Pinchart authored
The vb2 queue already keeps track of the streaming state, there's no need to duplicate that in the driver. Signed-off-by:
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Laurent Pinchart authored
Set the v4l2_capability capabilities and device_caps fields correctly. Signed-off-by:
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Laurent Pinchart authored
Code common to all cases can be moved out of the switch...case statement. Signed-off-by:
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