diff options
author | Sylwester Nawrocki <s.nawrocki@samsung.com> | 2016-06-29 06:31:30 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2016-07-08 14:26:29 -0300 |
commit | f61d500820d08be2cbce38bfe585a3ed009d2627 (patch) | |
tree | 9d0916aed4f90d0441df98b51770fce323ab29d7 /drivers/media/platform | |
parent | e0d80c8acca0f221b9dedb2eab7a5184848b99b7 (diff) |
[media] exynos4-is: Fix buffer release issue on fimc m2m video nodes
This fixes dropping ownership of buffers in the driver's stop_streaming
callback, so buffers on the memory-to-memory video nodes are properly
released, also in case when the driver has a buffer only on one of the
queues (OUTPUT, CAPTURE) before the video node close.
The issue was being reported by videobuf2 with a following warning while
checking q->owned_by_drv_count:
[ 2498.310766] WARNING: CPU: 0 PID: 9358 at drivers/media/v4l2-core/videobuf2-core.c:1818 __vb2_queue_cancel+0xe8/0x14c
[ 2498.320258] Modules linked in:
[ 2498.323212] CPU: 0 PID: 9358 Comm: v4l2_decode Not tainted 4.7.0-rc4-next-20160627 #1210
[ 2498.331284] Hardware name: SAMSUNG EXYNOS (Flattened Device Tree)
[ 2498.331327] [<c010d738>] (unwind_backtrace) from [<c010a4b0>] (show_stack+0x10/0x14)
[ 2498.331344] [<c010a4b0>] (show_stack) from [<c031a4ac>] (dump_stack+0x74/0x94)
[ 2498.331358] [<c031a4ac>] (dump_stack) from [<c011a52c>] (__warn+0xd4/0x100)
[ 2498.331369] [<c011a52c>] (__warn) from [<c011a578>] (warn_slowpath_null+0x20/0x28)
[ 2498.331381] [<c011a578>] (warn_slowpath_null) from [<c04ed420>] (__vb2_queue_cancel+0xe8/0x14c)
[ 2498.331395] [<c04ed420>] (__vb2_queue_cancel) from [<c04ee10c>] (vb2_core_queue_release+0x18/0x38)
[ 2498.331406] [<c04ee10c>] (vb2_core_queue_release) from [<c04eab50>] (v4l2_m2m_ctx_release+0x1c/0x28)
[ 2498.331420] [<c04eab50>] (v4l2_m2m_ctx_release) from [<c04fe184>] (fimc_m2m_release+0x24/0x78)
[ 2498.331437] [<c04fe184>] (fimc_m2m_release) from [<c04d76c8>] (v4l2_release+0x34/0x74)
[ 2498.331455] [<c04d76c8>] (v4l2_release) from [<c01dc8d4>] (__fput+0x80/0x1bc)
[ 2498.331469] [<c01dc8d4>] (__fput) from [<c0132edc>] (task_work_run+0xc0/0xe4)
[ 2498.331482] [<c0132edc>] (task_work_run) from [<c011d460>] (do_exit+0x304/0xa24)
[ 2498.331493] [<c011d460>] (do_exit) from [<c011dccc>] (do_group_exit+0x3c/0xbc)
[ 2498.331505] [<c011dccc>] (do_group_exit) from [<c0126cac>] (get_signal+0x200/0x65c)
[ 2498.331517] [<c0126cac>] (get_signal) from [<c010e928>] (do_signal+0x84/0x3c4)
[ 2498.331532] [<c010e928>] (do_signal) from [<c010a0ec>] (do_work_pending+0xa4/0xb4)
[ 2498.331545] [<c010a0ec>] (do_work_pending) from [<c0107954>] (slow_work_pending+0xc/0x20)
Reported-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Diffstat (limited to 'drivers/media/platform')
-rw-r--r-- | drivers/media/platform/exynos4-is/fimc-m2m.c | 24 |
1 files changed, 10 insertions, 14 deletions
diff --git a/drivers/media/platform/exynos4-is/fimc-m2m.c b/drivers/media/platform/exynos4-is/fimc-m2m.c index 55ec4c99d484..ec1c762b91d5 100644 --- a/drivers/media/platform/exynos4-is/fimc-m2m.c +++ b/drivers/media/platform/exynos4-is/fimc-m2m.c @@ -50,30 +50,28 @@ void fimc_m2m_job_finish(struct fimc_ctx *ctx, int vb_state) src_vb = v4l2_m2m_src_buf_remove(ctx->fh.m2m_ctx); dst_vb = v4l2_m2m_dst_buf_remove(ctx->fh.m2m_ctx); - if (src_vb && dst_vb) { + if (src_vb) v4l2_m2m_buf_done(src_vb, vb_state); + if (dst_vb) v4l2_m2m_buf_done(dst_vb, vb_state); + if (src_vb && dst_vb) v4l2_m2m_job_finish(ctx->fimc_dev->m2m.m2m_dev, ctx->fh.m2m_ctx); - } } /* Complete the transaction which has been scheduled for execution. */ -static int fimc_m2m_shutdown(struct fimc_ctx *ctx) +static void fimc_m2m_shutdown(struct fimc_ctx *ctx) { struct fimc_dev *fimc = ctx->fimc_dev; - int ret; if (!fimc_m2m_pending(fimc)) - return 0; + return; fimc_ctx_state_set(FIMC_CTX_SHUT, ctx); - ret = wait_event_timeout(fimc->irq_queue, - !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx), - FIMC_SHUTDOWN_TIMEOUT); - - return ret == 0 ? -ETIMEDOUT : ret; + wait_event_timeout(fimc->irq_queue, + !fimc_ctx_state_is_set(FIMC_CTX_SHUT, ctx), + FIMC_SHUTDOWN_TIMEOUT); } static int start_streaming(struct vb2_queue *q, unsigned int count) @@ -88,12 +86,10 @@ static int start_streaming(struct vb2_queue *q, unsigned int count) static void stop_streaming(struct vb2_queue *q) { struct fimc_ctx *ctx = q->drv_priv; - int ret; - ret = fimc_m2m_shutdown(ctx); - if (ret == -ETIMEDOUT) - fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); + fimc_m2m_shutdown(ctx); + fimc_m2m_job_finish(ctx, VB2_BUF_STATE_ERROR); pm_runtime_put(&ctx->fimc_dev->pdev->dev); } |