From 86ff7f1d4be99080d740fd88495154717cd39e2b Mon Sep 17 00:00:00 2001 From: Hans Verkuil Date: Fri, 7 Sep 2012 06:16:03 -0300 Subject: [PATCH] [media] em28xx: fill in readbuffers and fix incorrect return code g/s_parm should fill in readbuffers. For non-webcams s_parm should return -ENOTTY instead of -EINVAL. Signed-off-by: Hans Verkuil Signed-off-by: Devin Heitmueller Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/em28xx/em28xx-video.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/media/usb/em28xx/em28xx-video.c b/drivers/media/usb/em28xx/em28xx-video.c index acdb434..a91a248 100644 --- a/drivers/media/usb/em28xx/em28xx-video.c +++ b/drivers/media/usb/em28xx/em28xx-video.c @@ -972,6 +972,7 @@ static int vidioc_g_parm(struct file *file, void *priv, if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; + p->parm.capture.readbuffers = EM28XX_MIN_BUF; if (dev->board.is_webcam) rc = v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, g_parm, p); @@ -989,11 +990,12 @@ static int vidioc_s_parm(struct file *file, void *priv, struct em28xx *dev = fh->dev; if (!dev->board.is_webcam) - return -EINVAL; + return -ENOTTY; if (p->type != V4L2_BUF_TYPE_VIDEO_CAPTURE) return -EINVAL; + p->parm.capture.readbuffers = EM28XX_MIN_BUF; return v4l2_device_call_until_err(&dev->v4l2_dev, 0, video, s_parm, p); } -- 2.7.4