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| author | Shaik Ameer Basha | 2013-09-20 08:26:18 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2013-10-28 18:22:45 +0100 |
| commit | 2ad5389b341282636644d917685029b4bb50553c (patch) | |
| tree | 9f2832c8b42a96f7d7fc0d1607de4e8b910f2b57 | |
| parent | [media] exynos-gsc: Handle ctx job finish when aborted (diff) | |
| download | kernel-qcow2-linux-2ad5389b341282636644d917685029b4bb50553c.tar.gz kernel-qcow2-linux-2ad5389b341282636644d917685029b4bb50553c.tar.xz kernel-qcow2-linux-2ad5389b341282636644d917685029b4bb50553c.zip | |
[media] v4l2-mem2mem: Don't schedule the context if abort job is called
When the current context is running,
1] If release is called, it waits until the job is finished.
2] As soon as the job is finished, v4l2_mem_ctx_release()tries to
release the vb2 queues.
3] But if the current context can be scheduled in the v4l2_m2m_job_finish()
it schedules the context and tries to call device_run().
4] As the release() and device_run() sequence can't be predicted sometimes
device_run() may get empty vb2 buffers.
This patch adds the ABORT state to the job_flags. Once the job_abort() or
release() is called on the context, the same context will not be scheduled in
the v4l2_m2m_job_finish().
Signed-off-by: Shaik Ameer Basha <shaik.ameer@samsung.com>
Signed-off-by: Kamil Debski <k.debski@samsung.com>
Signed-off-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
| -rw-r--r-- | drivers/media/v4l2-core/v4l2-mem2mem.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c index 796de3349303..73035ee0f4de 100644 --- a/drivers/media/v4l2-core/v4l2-mem2mem.c +++ b/drivers/media/v4l2-core/v4l2-mem2mem.c @@ -41,6 +41,8 @@ module_param(debug, bool, 0644); #define TRANS_QUEUED (1 << 0) /* Instance is currently running in hardware */ #define TRANS_RUNNING (1 << 1) +/* Instance is currently aborting */ +#define TRANS_ABORT (1 << 2) /* Offset base for buffers on the destination queue - used to distinguish @@ -221,6 +223,14 @@ static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx) } spin_lock_irqsave(&m2m_dev->job_spinlock, flags_job); + + /* If the context is aborted then don't schedule it */ + if (m2m_ctx->job_flags & TRANS_ABORT) { + spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job); + dprintk("Aborted context\n"); + return; + } + if (m2m_ctx->job_flags & TRANS_QUEUED) { spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job); dprintk("On job queue already\n"); @@ -280,6 +290,8 @@ static void v4l2_m2m_cancel_job(struct v4l2_m2m_ctx *m2m_ctx) m2m_dev = m2m_ctx->m2m_dev; spin_lock_irqsave(&m2m_dev->job_spinlock, flags); + + m2m_ctx->job_flags |= TRANS_ABORT; if (m2m_ctx->job_flags & TRANS_RUNNING) { spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags); m2m_dev->m2m_ops->job_abort(m2m_ctx->priv); |