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[media] v4l2-mem2mem: use CAPTURE queue lock

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In v4l2_m2m_try_schedule(), use the CAPTURE queue lock when accessing
the CAPTURE queue, instead of relying on just holding the OUTPUT queue
lock.

Signed-off-by: John Sheu <sheu@google.com>
Acked-by: Pawel Osciak <pawel@osciak.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
John Sheu 2013-02-06 20:03:00 -03:00 committed by Mauro Carvalho Chehab
parent b0a1f2a842
commit f1a0569be6
1 changed files with 3 additions and 0 deletions
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3
drivers/media/v4l2-core/v4l2-mem2mem.c
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@ -230,12 +230,15 @@ static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
dprintk("No input buffers available\n");
return;
}
spin_lock_irqsave(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
if (list_empty(&m2m_ctx->cap_q_ctx.rdy_queue)) {
spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
dprintk("No output buffers available\n");
return;
}
spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
if (m2m_dev->m2m_ops->job_ready