- 28 Nov, 2012 11 commits
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Laurent Pinchart authored
The MEDIA_ENT_FL_DEFAULT identifies entities that are considered as default for their group and type. For video nodes, it identifies the node that application should use by default. UVC devices don't report which output terminal should be considered as the default, use the first one. Most devices have a single output terminal anyway. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
The proper error code is -ENOTTY instead of -EINVAL. This issue was found by the v4l2-compliance tool. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
Set the capabilities field to global capabilities, and the device_caps field to the video node capabilities. This issue was found by the v4l2-compliance tool. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
Return the default format in that case. This issue was found by the v4l2-compliance tool. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
The proper return code according to the V4L2 specification is -EACCES, not -EINVAL. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Laurent Pinchart authored
When one of the requested controls doesn't exist the error_idx field must reflect that situation. For G_EXT_CTRLS and S_EXT_CTRLS, error_idx must be set to the control count. For TRY_EXT_CTRLS, it must be set to the index of the unexisting control. This issue was found by the v4l2-compliance tool. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Juergen Lock authored
This just adds the usbid to the rtl28xxu driver, that's all that's needed to make the stick work for DVB. Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de> Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Antti Palosaari authored
It was a bad idea, as comment also says, to write some "don't care" registers as 0xff value. Fix it. Signed-off-by: Antti Palosaari <crope@iki.fi> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Sylwester Nawrocki authored
This patch adds V4L2 driver for Samsung S3C24XX/S3C64XX SoC series camera interface. The driver exposes a subdev device node for CAMIF pixel resolution and crop control and two video capture nodes - for the "codec" and "preview" data paths. It has been tested on Mini2440 (s3c2440) and Mini6410 (s3c6410) board with gstreamer and mplayer. Signed-off-by: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com> Signed-off-by: Andrey Gusakov <dron0gus@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Mauro Carvalho Chehab authored
* linus/master: (1428 commits) futex: avoid wake_futex() for a PI futex_q watchdog: using u64 in get_sample_period() writeback: put unused inodes to LRU after writeback completion mm: vmscan: check for fatal signals iff the process was throttled Revert "mm: remove __GFP_NO_KSWAPD" proc: check vma->vm_file before dereferencing UAPI: strip the _UAPI prefix from header guards during header installation include/linux/bug.h: fix sparse warning related to BUILD_BUG_ON_INVALID Linux 3.7-rc7 powerpc/eeh: Do not invalidate PE properly ALSA: hda - Fix build without CONFIG_PM of/address: sparc: Declare of_iomap as an extern function for sparc again PM / QoS: fix wrong error-checking condition bnx2x: remove redundant warning log vxlan: fix command usage in its doc 8139cp: revert "set ring address before enabling receiver" MPI: Fix compilation on MIPS with GCC 4.4 and newer MIPS: Fix crash that occurs when function tracing is enabled MIPS: Merge overlapping bootmem ranges jbd: Fix lock ordering bug in journal_unmap_buffer() ...
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- 27 Nov, 2012 16 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-mediaLinus Torvalds authored
Pull media fixes from Mauro Carvalho Chehab: "For some media fixes: - dvb_usb_v2: some fixes at the core - Some fixes on some embedded drivers: soc_camera, adv7604, omap3isp, exynos/s5p - Several Exynos4/5 camera fixes - a fix at stv0900 driver - a few USB ID additions to detect more variants of rtl28xxu-based sticks" * 'v4l_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media: (25 commits) [media] rtl28xxu: 0ccd:00d7 TerraTec Cinergy T Stick+ [media] rtl28xxu: 1d19:1102 Dexatek DK mini DVB-T Dongle [media] mt9v022: fix the V4L2_CID_EXPOSURE control [media] mx2_camera: fix missing unlock on error in mx2_start_streaming() [media] media: omap1_camera: fix const cropping related warnings [media] media: mx1_camera: use the default .set_crop() implementation [media] media: mx2_camera: fix const cropping related warnings [media] media: mx3_camera: fix const cropping related warnings [media] media: pxa_camera: fix const cropping related warnings [media] media: sh_mobile_ceu_camera: fix const cropping related warnings [media] media: sh_vou: fix const cropping related warnings [media] adv7604: restart STDI once if format is not found [media] adv7604: use presets where possible [media] adv7604: Replace prim_mode by mode [media] adv7604: cleanup references [media] dvb_usb_v2: switch interruptible mutex to normal [media] dvb_usb_v2: fix pid_filter callback error logging [media] exynos-gsc: change driver compatible string [media] omap3isp: Fix warning caused by bad subdev events operations prototypes [media] omap3isp: video: Fix warning caused by bad vidioc_s_crop prototype ...
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Marek Szyprowski authored
dma_common_get_sgtable() function doesn't depend on ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY, so it must not be compiled conditionally. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Mauro Carvalho Chehab authored
The right solution is to remove the architecture dependency on dma_common_get_sgtable(). Revert this patch to apply the right one. This reverts commit 93049b93.
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Linus Torvalds authored
Merge misc fixes from Andrew Morton: "8 fixes" * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (8 patches) futex: avoid wake_futex() for a PI futex_q watchdog: using u64 in get_sample_period() writeback: put unused inodes to LRU after writeback completion mm: vmscan: check for fatal signals iff the process was throttled Revert "mm: remove __GFP_NO_KSWAPD" proc: check vma->vm_file before dereferencing UAPI: strip the _UAPI prefix from header guards during header installation include/linux/bug.h: fix sparse warning related to BUILD_BUG_ON_INVALID
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git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/ttyLinus Torvalds authored
Pull TTY fix from Greg Kroah-Hartman: "Here is a single fix for a reported regression in 3.7-rc5 for the tty layer. This fix has been in the linux-next tree and solves the reported problem. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>" * tag 'tty-3.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: tty vt: Fix a regression in command line edition
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git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6Linus Torvalds authored
Pull MFD fixes from Samuel Ortiz: - A twl fix preventing a buffer overflow. - A wm5102 register patch fix. - A wm5110 error misreport fix. - Arizona fixes: Use the right array size when adding subdevices, correctly report underclocked events, synchronize register cache after reset. - A twl4030 fix for preventing the system to hang from an interrupt flood. * tag 'mfd-for-linus-3.7' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: mfd: twl4030: Fix chained irq handling on resume from suspend mfd: arizona: Sync regcache after reset mfd: arizona: Correctly report when AIF2/AIF1 is underclocked mfd: arizona: Use correct array for ARRAY_SIZE in mfd_add_devices call mfd: wm5110: Disable control interface error report for WM5110 rev B mfd: wm5102: Update register patch for latest evaluation mfd: twl-core: Fix chip ID for the twl6030-pwm module
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git://git.linaro.org/people/rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: "Not much here, just a couple minor/cosmetic fixes and a patch for the decompressor which fixes problems with modern GCC and CPUs." * 'fixes' of git://git.linaro.org/people/rmk/linux-arm: ARM: 7583/1: decompressor: Enable unaligned memory access for v6 and above ARM: 7572/1: proc-v6.S: fix comment ARM: 7570/1: quiet down the non make -s output
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fsLinus Torvalds authored
Pull ext3 regression fix from Jan Kara: "Fix an ext3 regression introduced during 3.7 merge window. It leads to deadlock if you stress the filesystem in the right way (luckily only if blocksize < pagesize)." * 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: jbd: Fix lock ordering bug in journal_unmap_buffer()
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Darren Hart authored
Dave Jones reported a bug with futex_lock_pi() that his trinity test exposed. Sometime between queue_me() and taking the q.lock_ptr, the lock_ptr became NULL, resulting in a crash. While futex_wake() is careful to not call wake_futex() on futex_q's with a pi_state or an rt_waiter (which are either waiting for a futex_unlock_pi() or a PI futex_requeue()), futex_wake_op() and futex_requeue() do not perform the same test. Update futex_wake_op() and futex_requeue() to test for q.pi_state and q.rt_waiter and abort with -EINVAL if detected. To ensure any future breakage is caught, add a WARN() to wake_futex() if the same condition is true. This fix has seen 3 hours of testing with "trinity -c futex" on an x86_64 VM with 4 CPUS. [akpm@linux-foundation.org: tidy up the WARN()] Signed-off-by: Darren Hart <dvhart@linux.intel.com> Reported-by: Dave Jones <davej@redat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@elte.hu> Cc: John Kacur <jkacur@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Chuansheng Liu authored
In get_sample_period(), unsigned long is not enough: watchdog_thresh * 2 * (NSEC_PER_SEC / 5) case1: watchdog_thresh is 10 by default, the sample value will be: 0xEE6B2800 case2: set watchdog_thresh is 20, the sample value will be: 0x1 DCD6 5000 In case2, we need use u64 to express the sample period. Otherwise, changing the threshold thru proc often can not be successful. Signed-off-by: liu chuansheng <chuansheng.liu@intel.com> Acked-by: Don Zickus <dzickus@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Jan Kara authored
Commit 169ebd90 ("writeback: Avoid iput() from flusher thread") removed iget-iput pair from inode writeback. As a side effect, inodes that are dirty during iput_final() call won't be ever added to inode LRU (iput_final() doesn't add dirty inodes to LRU and later when the inode is cleaned there's noone to add the inode there). Thus inodes are effectively unreclaimable until someone looks them up again. The practical effect of this bug is limited by the fact that inodes are pinned by a dentry for long enough that the inode gets cleaned. But still the bug can have nasty consequences leading up to OOM conditions under certain circumstances. Following can easily reproduce the problem: for (( i = 0; i < 1000; i++ )); do mkdir $i for (( j = 0; j < 1000; j++ )); do touch $i/$j echo 2 > /proc/sys/vm/drop_caches done done then one needs to run 'sync; ls -lR' to make inodes reclaimable again. We fix the issue by inserting unused clean inodes into the LRU after writeback finishes in inode_sync_complete(). Signed-off-by: Jan Kara <jack@suse.cz> Reported-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Al Viro <viro@zeniv.linux.org.uk> Cc: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> Cc: Wu Fengguang <fengguang.wu@intel.com> Cc: Dave Chinner <david@fromorbit.com> Cc: <stable@vger.kernel.org> [3.5+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mel Gorman authored
Commit 5515061d ("mm: throttle direct reclaimers if PF_MEMALLOC reserves are low and swap is backed by network storage") introduced a check for fatal signals after a process gets throttled for network storage. The intention was that if a process was throttled and got killed that it should not trigger the OOM killer. As pointed out by Minchan Kim and David Rientjes, this check is in the wrong place and too broad. If a system is in am OOM situation and a process is exiting, it can loop in __alloc_pages_slowpath() and calling direct reclaim in a loop. As the fatal signal is pending it returns 1 as if it is making forward progress and can effectively deadlock. This patch moves the fatal_signal_pending() check after throttling to throttle_direct_reclaim() where it belongs. If the process is killed while throttled, it will return immediately without direct reclaim except now it will have TIF_MEMDIE set and will use the PFMEMALLOC reserves. Minchan pointed out that it may be better to direct reclaim before returning to avoid using the reserves because there may be pages that can easily reclaim that would avoid using the reserves. However, we do no such targetted reclaim and there is no guarantee that suitable pages are available. As it is expected that this throttling happens when swap-over-NFS is used there is a possibility that the process will instead swap which may allocate network buffers from the PFMEMALLOC reserves. Hence, in the swap-over-nfs case where a process can be throtted and be killed it can use the reserves to exit or it can potentially use reserves to swap a few pages and then exit. This patch takes the option of using the reserves if necessary to allow the process exit quickly. If this patch passes review it should be considered a -stable candidate for 3.6. Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: David Rientjes <rientjes@google.com> Cc: Luigi Semenzato <semenzato@google.com> Cc: Dan Magenheimer <dan.magenheimer@oracle.com> Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: Sonny Rao <sonnyrao@google.com> Cc: Minchan Kim <minchan@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Mel Gorman authored
With "mm: vmscan: scale number of pages reclaimed by reclaim/compaction based on failures" reverted, Zdenek Kabelac reported the following Hmm, so it's just took longer to hit the problem and observe kswapd0 spinning on my CPU again - it's not as endless like before - but still it easily eats minutes - it helps to turn off Firefox or TB (memory hungry apps) so kswapd0 stops soon - and restart those apps again. (And I still have like >1GB of cached memory) kswapd0 R running task 0 30 2 0x00000000 Call Trace: preempt_schedule+0x42/0x60 _raw_spin_unlock+0x55/0x60 put_super+0x31/0x40 drop_super+0x22/0x30 prune_super+0x149/0x1b0 shrink_slab+0xba/0x510 The sysrq+m indicates the system has no swap so it'll never reclaim anonymous pages as part of reclaim/compaction. That is one part of the problem but not the root cause as file-backed pages could also be reclaimed. The likely underlying problem is that kswapd is woken up or kept awake for each THP allocation request in the page allocator slow path. If compaction fails for the requesting process then compaction will be deferred for a time and direct reclaim is avoided. However, if there are a storm of THP requests that are simply rejected, it will still be the the case that kswapd is awake for a prolonged period of time as pgdat->kswapd_max_order is updated each time. This is noticed by the main kswapd() loop and it will not call kswapd_try_to_sleep(). Instead it will loopp, shrinking a small number of pages and calling shrink_slab() on each iteration. The temptation is to supply a patch that checks if kswapd was woken for THP and if so ignore pgdat->kswapd_max_order but it'll be a hack and not backed up by proper testing. As 3.7 is very close to release and this is not a bug we should release with, a safer path is to revert "mm: remove __GFP_NO_KSWAPD" for now and revisit it with the view to ironing out the balance_pgdat() logic in general. Signed-off-by: Mel Gorman <mgorman@suse.de> Cc: Zdenek Kabelac <zkabelac@redhat.com> Cc: Seth Jennings <sjenning@linux.vnet.ibm.com> Cc: Valdis Kletnieks <Valdis.Kletnieks@vt.edu> Cc: Jiri Slaby <jirislaby@gmail.com> Cc: Rik van Riel <riel@redhat.com> Cc: Robert Jennings <rcj@linux.vnet.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Stanislav Kinsbursky authored
Commit 7b540d06 ("proc_map_files_readdir(): don't bother with grabbing files") switched proc_map_files_readdir() to use @f_mode directly instead of grabbing @file reference, but same time the test for @vm_file presence was lost leading to nil dereference. The patch brings the test back. The all proc_map_files feature is CONFIG_CHECKPOINT_RESTORE wrapped (which is set to 'n' by default) so the bug doesn't affect regular kernels. The regression is 3.7-rc1 only as far as I can tell. [gorcunov@openvz.org: provided changelog] Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com> Acked-by: Cyrill Gorcunov <gorcunov@openvz.org> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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David Howells authored
Strip the _UAPI prefix from header guards during header installation so that any userspace dependencies aren't affected. glibc, for example, checks for linux/types.h, linux/kernel.h, linux/compiler.h and linux/list.h by their guards - though the last two aren't actually exported. libtool: compile: gcc -std=gnu99 -DHAVE_CONFIG_H -I. -Wall -Werror -Wformat -Wformat-security -D_FORTIFY_SOURCE=2 -fno-delete-null-pointer-checks -fstack-protector -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -c child.c -fPIC -DPIC -o .libs/child.o In file included from cli.c:20:0: common.h:152:8: error: redefinition of 'struct sysinfo' In file included from /usr/include/linux/kernel.h:4:0, from /usr/include/linux/sysctl.h:25, from /usr/include/sys/sysctl.h:43, from common.h:50, from cli.c:20: /usr/include/linux/sysinfo.h:7:8: note: originally defined here Reported-by: Tomasz Torcz <tomek@pipebreaker.pl> Signed-off-by: David Howells <dhowells@redhat.com> Acked-by: Josh Boyer <jwboyer@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tushar Behera authored
Commit baf05aa9 ("bug: introduce BUILD_BUG_ON_INVALID() macro") introduces this macro only when _CHECKER_ is not defined. Define a silent macro in the else condition to fix following sparse warning: mm/filemap.c:395:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' mm/filemap.c:396:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' mm/filemap.c:397:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' include/linux/mm.h:419:9: error: undefined identifier 'BUILD_BUG_ON_INVALID' include/linux/mm.h:419:9: error: not a function <noident> Signed-off-by: Tushar Behera <tushar.behera@linaro.org> Acked-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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- 26 Nov, 2012 4 commits
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Mauro Carvalho Chehab authored
As reported by Stephen: > After merging the v4l-dvb tree, today's linux-next build (x86_64 > allmodconfig) failed like this: > > ERROR: "dma_common_get_sgtable" [drivers/media/v4l2-core/videobuf2-dma-contig.ko] undefined! > > Caused by commit 9ef2cbeb ("[media] v4l: vb2-dma-contig: add support > for DMABUF exporting"). dma_common_get_sgtable() is called from the > inline dma_get_sgtable_attrs() and dma_get_sgtable_attrs() is "called > from" dma_get_sgtable(). dma_common_get_sgtable() is only defined if > ARCH_HAS_DMA_DECLARE_COHERENT_MEMORY is set which depends on > CONFIG_HAVE_GENERIC_DMA_COHERENT being set which it isn't for this build. The simplest fix is to just not support DMABUF with vb2-contig, on archs where this symbol doesn't exist. Some latter patch can rewrite it to support this outside -arm. Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpcLinus Torvalds authored
Pull powerpc EEH bugfixes from Benjamin Herrenschmidt. Two one-liner fixes for the new EEH code. * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc/eeh: Do not invalidate PE properly powerpc/pseries: Fix oops with MSIs when missing EEH PEs
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git://git.linux-mips.org/pub/scm/ralf/upstream-linusLinus Torvalds authored
Pull MIPS fixes from Ralf Baechle: "Three issues fixed accross the field: - Some functions that were recently outlined as part of a preemption fix were causing problems with function tracing. - The recently merged in-kernel MPI library uses very outdated headers that contain MIPS-specific code which won't build on with gcc 4.4 or newer. - The MIPS non-NUMA memory initialization was making only a very half-baked attempt at merging adjacent memory ranges. This kept the code simple enough but is now causing issues with kexec." * 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: MPI: Fix compilation on MIPS with GCC 4.4 and newer MIPS: Fix crash that occurs when function tracing is enabled MIPS: Merge overlapping bootmem ranges
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- 25 Nov, 2012 9 commits
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Gavin Shan authored
While the EEH does recovery on the specific PE that has PCI errors, the PCI devices belonging to the PE will be removed and the PE will be marked as invalid since we still need the information stored in the PE. We only invalidate the PE when it doesn't have associated EEH devices and valid child PEs. However, the code used to check that is wrong. The patch fixes that. Signed-off-by: Gavin Shan <shangw@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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Tomasz Stanislawski authored
This patch enhances s5p-mfc with support for DMABUF exporting via VIDIOC_EXPBUF ioctl. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tomasz Stanislawski authored
This patch enhances s5p-tv with support for DMABUF exporting via VIDIOC_EXPBUF ioctl. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tomasz Stanislawski authored
This patch enhances s5p-fimc with support for DMABUF exporting via VIDIOC_EXPBUF ioctl. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tomasz Stanislawski authored
Most operations on DMA and DMABUF framework require the size of a buffer to be page aligned. This patch guarantees the requirement is satisfied for all vb2-dma-contig buffers. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Marek Szyprowski authored
The DMA transfer must be aligned to a specific value. If userptr is not aligned to DMA requirements then unexpected corruptions of the memory may occur before or after a buffer. To prevent such situations, all unligned userptr buffers are rejected at VIDIOC_QBUF. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tomasz Stanislawski authored
This patch adds taking reference to the device for MMAP buffers. Such buffers, may be exported using DMABUF mechanism. If the driver that created a queue is unloaded then the queue is released, the device might be released too. However, buffers cannot be released if they are referenced by DMABUF descriptor(s). The device pointer kept in a buffer must be valid for the whole buffer's lifetime. Therefore MMAP buffers should take a reference to the device to avoid risk of dangling pointers. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tomasz Stanislawski authored
This patch adds support for exporting a dma-contig buffer using DMABUF interface. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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Tomasz Stanislawski authored
This patch adds extension to videobuf2-core. It allow to export an mmap buffer as a DMABUF file descriptor. Signed-off-by: Tomasz Stanislawski <t.stanislaws@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by: Hans Verkuil <hans.verkuil@cisco.com> Tested-by: Mauro Carvalho Chehab <mchehab@redhat.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
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