diff options
Diffstat (limited to 'drivers/media/usb/b2c2/flexcop-usb.c')
| -rw-r--r-- | drivers/media/usb/b2c2/flexcop-usb.c | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/drivers/media/usb/b2c2/flexcop-usb.c b/drivers/media/usb/b2c2/flexcop-usb.c index 52bc42da8a4c..a93fc1839e13 100644 --- a/drivers/media/usb/b2c2/flexcop-usb.c +++ b/drivers/media/usb/b2c2/flexcop-usb.c @@ -295,7 +295,7 @@ static int flexcop_usb_i2c_req(struct flexcop_i2c_adapter *i2c, mutex_unlock(&fc_usb->data_mutex); - return 0; + return ret; } /* actual bus specific access functions, @@ -504,7 +504,16 @@ urb_error: static int flexcop_usb_init(struct flexcop_usb *fc_usb) { /* use the alternate setting with the larges buffer */ - usb_set_interface(fc_usb->udev,0,1); + int ret = usb_set_interface(fc_usb->udev, 0, 1); + + if (ret) { + err("set interface failed."); + return ret; + } + + if (fc_usb->uintf->cur_altsetting->desc.bNumEndpoints < 1) + return -ENODEV; + switch (fc_usb->udev->speed) { case USB_SPEED_LOW: err("cannot handle USB speed because it is too slow."); |