- 21 Aug, 2014 40 commits
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Geert Uytterhoeven authored
Signed-off-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by:
Mauro Carvalho Chehab <m.chehab@samsung.com>
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Hans Verkuil authored
Modern kernels enable dynamic printk support, which is fine, except when it is combined with a debug module option. Enabling debug in videobuf2-core now produces no debugging unless it is also enabled through the dynamic printk support in debugfs. Either use a debug module option + pr_info, or use pr_debug without a debug module option. In this case the fact that you can set various debug levels is very useful, so I believe that for videobuf2-core.c we should use pr_info. The mix of the two is very confusing: I've spent too much time already trying to figure out why I am not seeing any debug output in the kernel log when I do: echo 1 >/sys/modules/videobuf2_core/parameters/debug Signed-off-by:
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Hans Verkuil authored
The order of the last two fields in the G/S_EDID specification was swapped from what is in the actual struct. Fix this. Signed-off-by:
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Hans Verkuil authored
The following lockdep warning has been there ever since commit a517cca6 one year ago: [ 403.117947] ====================================================== [ 403.117949] [ INFO: possible circular locking dependency detected ] [ 403.117953] 3.16.0-rc6-test-media #961 Not tainted [ 403.117954] ------------------------------------------------------- [ 403.117956] v4l2-ctl/15377 is trying to acquire lock: [ 403.117959] (&dev->mutex#3){+.+.+.}, at: [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.117974] [ 403.117974] but task is already holding lock: [ 403.117976] (&mm->mmap_sem){++++++}, at: [<ffffffff8118291f>] vm_mmap_pgoff+0x6f/0xc0 [ 403.117987] [ 403.117987] which lock already depends on the new lock. [ 403.117987] [ 403.117990] [ 403.117990] the existing dependency chain (in reverse order) is: [ 403.117992] [ 403.117992] -> #1 (&mm->mmap_sem){++++++}: [ 403.117997] [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0 [ 403.118006] [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30 [ 403.118010] [<ffffffff810d9da7>] lock_acquire+0xa7/0x160 [ 403.118014] [<ffffffff8118c9ec>] might_fault+0x7c/0xb0 [ 403.118018] [<ffffffffa0028a25>] video_usercopy+0x425/0x610 [videodev] [ 403.118028] [<ffffffffa0028c25>] video_ioctl2+0x15/0x20 [videodev] [ 403.118034] [<ffffffffa0022764>] v4l2_ioctl+0x184/0x1a0 [videodev] [ 403.118040] [<ffffffff811d77d0>] do_vfs_ioctl+0x2f0/0x4f0 [ 403.118307] [<ffffffff811d7a51>] SyS_ioctl+0x81/0xa0 [ 403.118311] [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b [ 403.118319] [ 403.118319] -> #0 (&dev->mutex#3){+.+.+.}: [ 403.118324] [<ffffffff810d6a96>] check_prevs_add+0x746/0x9f0 [ 403.118329] [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0 [ 403.118333] [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30 [ 403.118336] [<ffffffff810d9da7>] lock_acquire+0xa7/0x160 [ 403.118340] [<ffffffff81999664>] mutex_lock_interruptible_nested+0x64/0x640 [ 403.118344] [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.118349] [<ffffffffa0022122>] v4l2_mmap+0x62/0xa0 [videodev] [ 403.118354] [<ffffffff81197270>] mmap_region+0x3d0/0x5d0 [ 403.118359] [<ffffffff8119778d>] do_mmap_pgoff+0x31d/0x400 [ 403.118363] [<ffffffff81182940>] vm_mmap_pgoff+0x90/0xc0 [ 403.118366] [<ffffffff81195cef>] SyS_mmap_pgoff+0x1df/0x2a0 [ 403.118369] [<ffffffff810085c2>] SyS_mmap+0x22/0x30 [ 403.118376] [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b [ 403.118381] [ 403.118381] other info that might help us debug this: [ 403.118381] [ 403.118383] Possible unsafe locking scenario: [ 403.118383] [ 403.118385] CPU0 CPU1 [ 403.118387] ---- ---- [ 403.118388] lock(&mm->mmap_sem); [ 403.118391] lock(&dev->mutex#3); [ 403.118394] lock(&mm->mmap_sem); [ 403.118397] lock(&dev->mutex#3); [ 403.118400] [ 403.118400] *** DEADLOCK *** [ 403.118400] [ 403.118403] 1 lock held by v4l2-ctl/15377: [ 403.118405] #0: (&mm->mmap_sem){++++++}, at: [<ffffffff8118291f>] vm_mmap_pgoff+0x6f/0xc0 [ 403.118411] [ 403.118411] stack backtrace: [ 403.118415] CPU: 0 PID: 15377 Comm: v4l2-ctl Not tainted 3.16.0-rc6-test-media #961 [ 403.118418] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 07/31/2013 [ 403.118420] ffffffff82a6c9d0 ffff8800af37fb00 ffffffff819916a2 ffffffff82a6c9d0 [ 403.118425] ffff8800af37fb40 ffffffff810d5715 ffff8802308e4200 0000000000000000 [ 403.118429] ffff8802308e4a48 ffff8802308e4a48 ffff8802308e4200 0000000000000001 [ 403.118433] Call Trace: [ 403.118441] [<ffffffff819916a2>] dump_stack+0x4e/0x7a [ 403.118445] [<ffffffff810d5715>] print_circular_bug+0x1d5/0x2a0 [ 403.118449] [<ffffffff810d6a96>] check_prevs_add+0x746/0x9f0 [ 403.118455] [<ffffffff8119c172>] ? find_vmap_area+0x42/0x70 [ 403.118459] [<ffffffff810d733c>] validate_chain.isra.39+0x5fc/0x9a0 [ 403.118463] [<ffffffff810d8bc3>] __lock_acquire+0x4d3/0xd30 [ 403.118468] [<ffffffff810d9da7>] lock_acquire+0xa7/0x160 [ 403.118472] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.118476] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.118480] [<ffffffff81999664>] mutex_lock_interruptible_nested+0x64/0x640 [ 403.118484] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.118488] [<ffffffffa005a6c3>] ? vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.118493] [<ffffffff810d8055>] ? mark_held_locks+0x75/0xa0 [ 403.118497] [<ffffffffa005a6c3>] vb2_fop_mmap+0x33/0x90 [videobuf2_core] [ 403.118502] [<ffffffffa0022122>] v4l2_mmap+0x62/0xa0 [videodev] [ 403.118506] [<ffffffff81197270>] mmap_region+0x3d0/0x5d0 [ 403.118510] [<ffffffff8119778d>] do_mmap_pgoff+0x31d/0x400 [ 403.118513] [<ffffffff81182940>] vm_mmap_pgoff+0x90/0xc0 [ 403.118517] [<ffffffff81195cef>] SyS_mmap_pgoff+0x1df/0x2a0 [ 403.118521] [<ffffffff810085c2>] SyS_mmap+0x22/0x30 [ 403.118525] [<ffffffff8199dc69>] system_call_fastpath+0x16/0x1b The reason is that vb2_fop_mmap and vb2_fop_get_unmapped_area take the core lock while they are called with the mmap_sem semaphore held. But elsewhere in the code the core lock is taken first but calls to copy_to/from_user() can take the mmap_sem semaphore as well, potentially causing a classical A-B/B-A deadlock. However, the mmap/get_unmapped_area calls really shouldn't take the core lock at all. So what would happen if they don't take the core lock anymore? There are two situations that need to be taken into account: calling mmap while new buffers are being added and calling mmap while buffers are being deleted. The first case works almost fine without a lock: in all cases mmap relies on correctly filled-in q->num_buffers/q->num_planes values and those are only updated by reqbufs and create_buffers *after* any new buffers have been initialized completely. Except in one case: if an error occurred while allocating the buffers it will increase num_buffers and rely on __vb2_queue_free to decrease it again. So there is a short period where the buffer information may be wrong. The second case definitely does pose a problem: buffers may be in the process of being deleted, without the internal structure being updated. In order to fix this a new mutex is added to vb2_queue that is taken when buffers are allocated or deleted, and in vb2_mmap. That way vb2_mmap won't get stale buffer data. Note that this is a problem only for MEMORY_MMAP, so even though __qbuf_userptr and __qbuf_dmabuf also mess around with buffers (mem_priv in particular), this doesn't clash with vb2_mmap or vb2_get_unmapped_area since those are MMAP specific. As an additional bonus the hack in __buf_prepare, the USERPTR case, can be removed as well since mmap() no longer takes the core lock. All in all a much cleaner solution. Signed-off-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by:
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Dan Carpenter authored
The "i--" needs to happen at the start of the loop or it will try to release something bogus (probably it will crash) and it won't release the first ->vaddr_page[]. Fixes: 7b4eeed1 ('[media] vmalloc_sg: make sure all pages in vmalloc area are really DMA-ready') Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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Mauro Carvalho Chehab authored
This is needed to free state and for dvb_detach() to be called. Signed-off-by: -
Mauro Carvalho Chehab authored
In order to get FE_HAS_SYNC, the viterbi should already be locked too. So, add the missing FE_HAS_VITERBI lock. Signed-off-by: -
Mauro Carvalho Chehab authored
Move as102-fe to dvb-frontends directory and make it an independent driver. Signed-off-by: -
Mauro Carvalho Chehab authored
Remove the dependencies of as102_cmd from as102, in order to allow it to be compiled as a separate module. Signed-off-by: -
Mauro Carvalho Chehab authored
This function just converts from the as10x internal data into the DVBv5 cache. Get rid of it. No functional changes. Signed-off-by: -
Mauro Carvalho Chehab authored
This function just parses the frontend cache and converts to the as102 internal format message. Get rid of it. No functional changes. Signed-off-by: -
Mauro Carvalho Chehab authored
Avoid having function prototypes by moving some ancillary routines to the beginning of the file. No functional changes. Signed-off-by: -
Mauro Carvalho Chehab authored
Make the frontend .name more coherent with DVB namespace. Signed-off-by: -
Mauro Carvalho Chehab authored
Fix this warning: WARNING: quoted string split across lines 566: FILE: drivers/media/usb/as102/as102_fe.c:141: + "demod status: fc: 0x%08x, bad fc: 0x%08x, " + "bytes corrected: 0x%08x , MER: 0x%04x\n", Signed-off-by: -
Mauro Carvalho Chehab authored
Make checkpatch happier by removing FSF mail address. No functional changes. Signed-off-by: -
Mauro Carvalho Chehab authored
This driver is stable and doesn't contain any really serious issue. Move it out of staging. Signed-off-by: -
Martin Kepplinger authored
remove dprintk() and replace it with dev_dbg() or pr_debug() in order to use the common kernel coding style. Signed-off-by:
Martin Kepplinger <martink@posteo.de> Signed-off-by:
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Mauro Carvalho Chehab authored
Add support for PCTV microStick (77e) device that uses a sms1140 chipset. Cc: stable@vger.kernel.org Signed-off-by: -
Sakari Ailus authored
Don't manipulate struct v4l2_ctrl directly. Instead, use v4l2_ctrl_s_ctrl_int64() to change the values. Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
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Sakari Ailus authored
Instead of modifying the control ranges directly by manipulating struct v4l2_ctrl, use __v4l2_ctrl_modify_range() for the purpose. Signed-off-by:
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Philipp Zabel authored
This patch breaks most long lines, concatenates broken up text strings, and adds or removes parentheses where needed to make checkpatch happy. The long codec list lines and a few 81-wide lines remain. Signed-off-by:
Philipp Zabel <p.zabel@pengutronix.de> Signed-off-by:
Kamil Debski <k.debski@samsung.com> Signed-off-by:
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Philipp Zabel authored
Since we neither support composing on the OUTPUT side, nor cropping on the CAPTURE side, disable VIDIOC_CROPCAP and VIDIOC_G/S_CROP altogether. This silences a GStreamer warning when GStreamer tries to obtain the pixel aspect ratio using VIDIOC_CROPCAP. Signed-off-by:
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Philipp Zabel authored
This patch makes coda_s_fmt_vid_out propagate the output frame size to the capture side. The GStreamer v4l2videodec only ever calls S_FMT on the output side and then expects G_FMT on the capture side to return a valid format. Signed-off-by:
Philipp Zabel <philipp.zabel@gmail.com> Signed-off-by:
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Philipp Zabel authored
Set the context color space when s_fmt succeeded, not when it failed. Signed-off-by:
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Philipp Zabel authored
Lock modification of the timestamp list with bitstream_mutex and do not try to remove a timestamp element if the list is empty. This can happen if the userspace feeds us garbage or multiple encoded frames in a single buffer. Signed-off-by:
Michael Olbrich <m.olbrich@pengutronix.de> Signed-off-by:
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Philipp Zabel authored
Produce some error messages when internal buffer allocation fails, for example because the CMA region is too small. Signed-off-by:
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Philipp Zabel authored
Dumping all register accesses drowns other debugging messages in the log. Add a less verbose debug level. Signed-off-by:
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Philipp Zabel authored
This patch increases the maximum vertical frame size reported by enum_fmt and accepted by try_fmt/s_fmt from 1080 to 1088. Since for 16x16-pixel macroblocks 1080p will be rounded up to this anyway, we may as well admit that we support it. Signed-off-by:
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Philipp Zabel authored
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Philipp Zabel authored
We know that it will return NULL in this case, so we can just as well skip it altogether. Signed-off-by:
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Philipp Zabel authored
This is needed to decrease the q->owned_by_drv_count to zero before __vb2_queue_cancel is called, to avoid the WARN_ON therein. Signed-off-by:
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Philipp Zabel authored
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Philipp Zabel authored
Request the main coda interrupt using its name, "bit", if available. Fall back to requesting the first interrupt for backwards compatibility. Signed-off-by:
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Philipp Zabel authored
The return value of this call to v4l2_m2m_next_dst_buf() is never used. Signed-off-by:
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Philipp Zabel authored
coda_h264_padding uses memcpy, we should include string.h for that. Reported-by:
Ian Jamison <ian.dev@arkver.com> Signed-off-by:
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Philipp Zabel authored
This patch moves the BIT processor specific coda_context_ops, the firmware upload and other related functions from coda-common.c into coda-bit.c. Signed-off-by:
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Philipp Zabel authored
Currently there is only the coda_h264_padding function, but we will have to add more H.264 specific helpers later. Signed-off-by:
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Philipp Zabel authored
This patch moves the context buffer allocation into the context start_streaming callbacks. The context buffer and internal framebuffer cleanup is moved into the context release callback. Signed-off-by:
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Philipp Zabel authored
This adds a helper function to consolidate three occurences where the bitstream parameter stream end flag is set during operation. Signed-off-by:
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Philipp Zabel authored
In preparation for the split, move the AXI_SRAM_USE register access and the PIC_RUN command execution out of pic_run_work into prepare_encode/decode. Signed-off-by:
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