diff options
| author | Laurent Pinchart <laurent.pinchart@skynet.be> | 2008-11-08 19:14:50 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2008-12-29 17:53:31 -0200 |
| commit | 44f0079ec74330b457d990072c13cbe28b0f1abf (patch) | |
| tree | a5af6ae41c4ff9dabc882d08cfda79a791d56430 /drivers/media/video/uvc/uvcvideo.h | |
| parent | 7e21fda17e7f6156e2ad66ca4f76abcbe1063eb2 (diff) | |
V4L/DVB (9570): uvcvideo: Handle failed video GET_{MIN|MAX|DEF} requests more gracefully
Failed requests will now generate a one-time warning message instead of the
usual "Failed to query..." error, which should be more user-friendly. The
driver will also recover automatically from failed GET_MIN/GET_MAX requests
when the device is half-broken without requiring the MINMAX quirk (fully
broken devices still need the quirk).
Signed-off-by: Laurent Pinchart <laurent.pinchart@skynet.be>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/uvc/uvcvideo.h')
| -rw-r--r-- | drivers/media/video/uvc/uvcvideo.h | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/media/video/uvc/uvcvideo.h b/drivers/media/video/uvc/uvcvideo.h index 9a6bc1aafb1..595b90ee652 100644 --- a/drivers/media/video/uvc/uvcvideo.h +++ b/drivers/media/video/uvc/uvcvideo.h @@ -617,6 +617,7 @@ enum uvc_device_state { struct uvc_device { struct usb_device *udev; struct usb_interface *intf; + unsigned long warnings; __u32 quirks; int intfnum; char name[32]; @@ -679,6 +680,9 @@ struct uvc_driver { #define UVC_TRACE_SUSPEND (1 << 8) #define UVC_TRACE_STATUS (1 << 9) +#define UVC_WARN_MINMAX 0 +#define UVC_WARN_PROBE_DEF 1 + extern unsigned int uvc_trace_param; #define uvc_trace(flag, msg...) \ @@ -687,6 +691,12 @@ extern unsigned int uvc_trace_param; printk(KERN_DEBUG "uvcvideo: " msg); \ } while (0) +#define uvc_warn_once(dev, warn, msg...) \ + do { \ + if (!test_and_set_bit(warn, &dev->warnings)) \ + printk(KERN_INFO "uvcvideo: " msg); \ + } while (0) + #define uvc_printk(level, msg...) \ printk(level "uvcvideo: " msg) @@ -740,10 +750,10 @@ extern int uvc_video_resume(struct uvc_video_device *video); extern int uvc_video_enable(struct uvc_video_device *video, int enable); extern int uvc_probe_video(struct uvc_video_device *video, struct uvc_streaming_control *probe); +extern int uvc_commit_video(struct uvc_video_device *video, + struct uvc_streaming_control *ctrl); extern int uvc_query_ctrl(struct uvc_device *dev, __u8 query, __u8 unit, __u8 intfnum, __u8 cs, void *data, __u16 size); -extern int uvc_set_video_ctrl(struct uvc_video_device *video, - struct uvc_streaming_control *ctrl, int probe); /* Status */ extern int uvc_status_init(struct uvc_device *dev); |