If active_bufs() list is empty and no IRQ status bit is set
we are probably dealing with a share IRQ. Return IRQ_NONE in
this case.
Signed-off-by: Javier Martin <javier.martin@xxxxxxxxxxxxxxxxx>
---
drivers/media/video/mx2_camera.c | 7 +++++--
1 files changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/media/video/mx2_camera.c b/drivers/media/video/mx2_camera.c
index 34b43a4..d9028f1 100644
--- a/drivers/media/video/mx2_camera.c
+++ b/drivers/media/video/mx2_camera.c
@@ -1302,7 +1302,11 @@ static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data)
if (list_empty(&pcdev->active_bufs)) {
dev_warn(pcdev->dev, "%s: called while active list is empty\n",
__func__);
- goto irq_ok;
+
+ if (!status) {
+ spin_unlock(&pcdev->lock);
+ return IRQ_NONE;
+ }
}
if (status & (1 << 7)) { /* overflow */
@@ -1327,7 +1331,6 @@ static irqreturn_t mx27_camera_emma_irq(int irq_emma, void *data)
mx27_camera_frame_done_emma(pcdev, 1, false);
}
-irq_ok:
spin_unlock(&pcdev->lock);
writel(status, pcdev->base_emma + PRP_INTRSTATUS);
--
1.7.0.4
--
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