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V4L/DVB (10463): radio-mr800: fix checking of retval after usb_bulk_msg

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Patch corrects checking of returned value after usb_bulk_msg. Now we
also check if number of transferred bytes equals to BUFFER_LENGTH.

Signed-off-by: Alexey Klimov <klimov.linux@gmail.com>
Signed-off-by: Douglas Schilling Landgraf <dougsland@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Alexey Klimov 2009-02-05 09:00:03 -03:00 committed by Mauro Carvalho Chehab
parent 71f07d94ce
commit e57458dc70
1 changed files with 3 additions and 3 deletions
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6
drivers/media/radio/radio-mr800.c
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@ -214,7 +214,7 @@ static int amradio_set_mute(struct amradio_device *radio, char argument)
retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
if (retval) {
if (retval < 0 || size != BUFFER_LENGTH) {
mutex_unlock(&radio->lock);
return retval;
}
@ -251,7 +251,7 @@ static int amradio_setfreq(struct amradio_device *radio, int freq)
retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
if (retval) {
if (retval < 0 || size != BUFFER_LENGTH) {
mutex_unlock(&radio->lock);
return retval;
}
@ -268,7 +268,7 @@ static int amradio_setfreq(struct amradio_device *radio, int freq)
retval = usb_bulk_msg(radio->usbdev, usb_sndintpipe(radio->usbdev, 2),
(void *) (radio->buffer), BUFFER_LENGTH, &size, USB_TIMEOUT);
if (retval) {
if (retval < 0 || size != BUFFER_LENGTH) {
mutex_unlock(&radio->lock);
return retval;
}