diff options
Diffstat (limited to 'drivers/media/video/gspca/gspca.c')
| -rw-r--r-- | drivers/media/video/gspca/gspca.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/drivers/media/video/gspca/gspca.c b/drivers/media/video/gspca/gspca.c index 15d302b28b79..2f7bf263255c 100644 --- a/drivers/media/video/gspca/gspca.c +++ b/drivers/media/video/gspca/gspca.c @@ -114,7 +114,8 @@ static void fill_frame(struct gspca_dev *gspca_dev, cam_pkt_op pkt_scan; if (urb->status != 0) { - PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status); + if (!gspca_dev->frozen) + PDEBUG(D_ERR|D_PACK, "urb status: %d", urb->status); return; /* disconnection ? */ } pkt_scan = gspca_dev->sd_desc->pkt_scan; @@ -1808,6 +1809,33 @@ void gspca_disconnect(struct usb_interface *intf) } EXPORT_SYMBOL(gspca_disconnect); +#ifdef CONFIG_PM +int gspca_suspend(struct usb_interface *intf, pm_message_t message) +{ + struct gspca_dev *gspca_dev = usb_get_intfdata(intf); + + if (!gspca_dev->streaming) + return 0; + gspca_dev->frozen = 1; /* avoid urb error messages */ + gspca_dev->sd_desc->stopN(gspca_dev); + destroy_urbs(gspca_dev); + gspca_set_alt0(gspca_dev); + gspca_dev->sd_desc->stop0(gspca_dev); + return 0; +} +EXPORT_SYMBOL(gspca_suspend); + +int gspca_resume(struct usb_interface *intf) +{ + struct gspca_dev *gspca_dev = usb_get_intfdata(intf); + + gspca_dev->frozen = 0; + if (!gspca_dev->streaming) + return 0; + return gspca_init_transfer(gspca_dev); +} +EXPORT_SYMBOL(gspca_resume); +#endif /* -- cam driver utility functions -- */ /* auto gain and exposure algorithm based on the knee algorithm described here: |