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[09/15] em28xx: fill in readbuffers and fix incorrect return code.

Message ID 1357333186-8466-10-git-send-email-dheitmueller@kernellabs.com (mailing list archive)
State New, archived
Headers show

Commit Message

Devin Heitmueller Jan. 4, 2013, 8:59 p.m. UTC 
g/s_parm should fill in readbuffers.
For non-webcams s_parm should return -ENOTTY instead of -EINVAL.

Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
---
 drivers/media/usb/em28xx/em28xx-video.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff mbox

Patch

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);
 }