* [PATCH] v4l2-dev.c: show which events are requested by poll()
@ 2021-03-11 13:05 Hans Verkuil
0 siblings, 0 replies; only message in thread
From: Hans Verkuil @ 2021-03-11 13:05 UTC (permalink / raw)
To: Linux Media Mailing List
This helps debugging poll problems.
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
---
diff --git a/drivers/media/v4l2-core/v4l2-dev.c b/drivers/media/v4l2-core/v4l2-dev.c
index b6a72d297775..7d0edf3530be 100644
--- a/drivers/media/v4l2-core/v4l2-dev.c
+++ b/drivers/media/v4l2-core/v4l2-dev.c
@@ -350,8 +350,9 @@ static __poll_t v4l2_poll(struct file *filp, struct poll_table_struct *poll)
res = vdev->fops->poll(filp, poll);
}
if (vdev->dev_debug & V4L2_DEV_DEBUG_POLL)
- dprintk("%s: poll: %08x\n",
- video_device_node_name(vdev), res);
+ dprintk("%s: poll: %08x %08x\n",
+ video_device_node_name(vdev), res,
+ poll_requested_events(poll));
return res;
}
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2021-03-11 13:05 [PATCH] v4l2-dev.c: show which events are requested by poll() Hans Verkuil
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