From: Alexey Klimov <klimov.linux@gmail.com>
To: Douglas Schilling Landgraf <dougsland@gmail.com>
Cc: linux-media@vger.kernel.org
Subject: [patch review 9/8] radio-mr800: fix checking of retval after usb_bulk_msg
Date: Wed, 04 Feb 2009 23:56:13 +0300 [thread overview]
Message-ID: <1233780973.2038.254.camel@tux.localhost> (raw)
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>
--
diff -r 2876e91adef9 linux/drivers/media/radio/radio-mr800.c
--- a/linux/drivers/media/radio/radio-mr800.c Wed Feb 04 21:38:46 2009 +0300
+++ b/linux/drivers/media/radio/radio-mr800.c Wed Feb 04 22:52:15 2009 +0300
@@ -217,7 +217,7 @@
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;
}
@@ -254,7 +254,7 @@
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;
}
@@ -271,7 +271,7 @@
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;
}
--
Best regards, Klimov Alexey
reply other threads:[~2009-02-04 20:56 UTC|newest]
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