[PATCH 3.18 14/52] media: em28xx: Fix misplaced reset of dev->v4l::field_count

From: Greg Kroah-Hartman
Date: Thu Jan 24 2019 - 14:21:57 EST


3.18-stable review patch. If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@xxxxxxxxxxxxxxx>

The backport of commit afeaade90db4 "media: em28xx: make
v4l2-compliance happier by starting sequence on zero" added a
reset on em28xx_v4l2::field_count to em28xx_ctrl_notify(),
but it should be done in em28xx_start_analog_streaming().

Signed-off-by: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Mauro Carvalho Chehab <mchehab+samsung@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/media/usb/em28xx/em28xx-video.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/media/usb/em28xx/em28xx-video.c
+++ b/drivers/media/usb/em28xx/em28xx-video.c
@@ -931,6 +931,8 @@ int em28xx_start_analog_streaming(struct

em28xx_videodbg("%s\n", __func__);

+ dev->v4l2->field_count = 0;
+
/* Make sure streaming is not already in progress for this type
of filehandle (e.g. video, vbi) */
rc = res_get(dev, vq->type);
@@ -1141,8 +1143,6 @@ static void em28xx_ctrl_notify(struct v4
{
struct em28xx *dev = priv;

- dev->v4l2->field_count = 0;
-
/*
* In the case of non-AC97 volume controls, we still need
* to do some setups at em28xx, in order to mute/unmute