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media: atmel: atmel-isc: fix INIT_WORK misplacement

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commit 79199002db upstream.

In case the completion function failes, unbind will be called
which will call cancel_work for awb_work.
This will trigger a WARN message from the workqueue.
To avoid this, move the INIT_WORK call at the start of the completion
function. This way the work is always initialized, which corresponds
to the 'always canceled' unbind code.

Fixes: 93d4a26c3d ("[media] atmel-isc: add the isc pipeline function")

Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eugen Hristev 2019-04-12 06:19:46 -04:00 committed by Greg Kroah-Hartman
parent 2c4575f070
commit b6a10a40a4
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/atmel/atmel-isc.c
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@ -1555,6 +1555,8 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
struct vb2_queue *q = &isc->vb2_vidq;
int ret;
INIT_WORK(&isc->awb_work, isc_awb_work);
ret = v4l2_device_register_subdev_nodes(&isc->v4l2_dev);
if (ret < 0) {
v4l2_err(&isc->v4l2_dev, "Failed to register subdev nodes\n");
@ -1614,8 +1616,6 @@ static int isc_async_complete(struct v4l2_async_notifier *notifier)
return ret;
}
INIT_WORK(&isc->awb_work, isc_awb_work);
/* Register video device */
strlcpy(vdev->name, ATMEL_ISC_NAME, sizeof(vdev->name));
vdev->release = video_device_release_empty;