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authorJohn Sheu <sheu@google.com>2013-05-23 20:41:48 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2013-06-03 15:51:54 -0300
commitb730627ad65f023dd9ce83047a3076330ebaefe5 (patch)
treefd9c036fd95ac9bd68ed7148fd5f03a70a8ded43 /drivers/media
parent8fdf94a254ab2f90ae79b82e56b1f8e9d7582026 (diff)
downloadvexpress-lsk-b730627ad65f023dd9ce83047a3076330ebaefe5.tar.gz
[media] v4l2: mem2mem: save irq flags correctly
Save flags correctly when taking spinlocks in v4l2_m2m_try_schedule. Signed-off-by: John Sheu <sheu@google.com> Signed-off-by: Kamil Debski <k.debski@samsung.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media')
-rw-r--r--drivers/media/v4l2-core/v4l2-mem2mem.c19
1 files changed, 11 insertions, 8 deletions
diff --git a/drivers/media/v4l2-core/v4l2-mem2mem.c b/drivers/media/v4l2-core/v4l2-mem2mem.c
index a756170dbe7..e96497f7c3e 100644
--- a/drivers/media/v4l2-core/v4l2-mem2mem.c
+++ b/drivers/media/v4l2-core/v4l2-mem2mem.c
@@ -205,7 +205,7 @@ static void v4l2_m2m_try_run(struct v4l2_m2m_dev *m2m_dev)
static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
{
struct v4l2_m2m_dev *m2m_dev;
- unsigned long flags_job, flags;
+ unsigned long flags_job, flags_out, flags_cap;
m2m_dev = m2m_ctx->m2m_dev;
dprintk("Trying to schedule a job for m2m_ctx: %p\n", m2m_ctx);
@@ -223,23 +223,26 @@ static void v4l2_m2m_try_schedule(struct v4l2_m2m_ctx *m2m_ctx)
return;
}
- spin_lock_irqsave(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
+ spin_lock_irqsave(&m2m_ctx->out_q_ctx.rdy_spinlock, flags_out);
if (list_empty(&m2m_ctx->out_q_ctx.rdy_queue)) {
- spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags);
+ spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock,
+ flags_out);
spin_unlock_irqrestore(&m2m_dev->job_spinlock, flags_job);
dprintk("No input buffers available\n");
return;
}
- spin_lock_irqsave(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags);
+ spin_lock_irqsave(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags_cap);
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_ctx->cap_q_ctx.rdy_spinlock,
+ flags_cap);
+ spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock,
+ flags_out);
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);
+ spin_unlock_irqrestore(&m2m_ctx->cap_q_ctx.rdy_spinlock, flags_cap);
+ spin_unlock_irqrestore(&m2m_ctx->out_q_ctx.rdy_spinlock, flags_out);
if (m2m_dev->m2m_ops->job_ready
&& (!m2m_dev->m2m_ops->job_ready(m2m_ctx->priv))) {