From: Alexey Klimov Date: Thu, 5 Feb 2009 12:00:03 +0000 (-0300) Subject: V4L/DVB (10463): radio-mr800: fix checking of retval after usb_bulk_msg X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=e57458dc7086bac9e05b6fc6d5ab336de1647c12;p=openwrt%2Fstaging%2Fblogic.git V4L/DVB (10463): radio-mr800: fix checking of retval after usb_bulk_msg 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 Signed-off-by: Douglas Schilling Landgraf Signed-off-by: Mauro Carvalho Chehab --- diff --git a/drivers/media/radio/radio-mr800.c b/drivers/media/radio/radio-mr800.c index 23c3c539157b..ded25bfb366e 100644 --- a/drivers/media/radio/radio-mr800.c +++ b/drivers/media/radio/radio-mr800.c @@ -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; }