Input: cm109 - fix checking return value of usb_control_msg

If successful, usb_control_msg returns the number of bytes transferred, otherwise a negative error number. Signed-off-by: Axel Lin <axel.lin@gmail.com> Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
git-mirror · Aug 27, 2011 · 7b727ac · 7b727ac
1 parent 1fab84a
commit 7b727ac
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/drivers/input/misc/cm109.c b/drivers/input/misc/cm109.c
@@ -475,7 +475,7 @@ static void cm109_toggle_buzzer_sync(struct cm109_dev *dev, int on)
 				le16_to_cpu(dev->ctl_req->wIndex),
 				dev->ctl_data,
 				USB_PKT_LEN, USB_CTRL_SET_TIMEOUT);
-	if (error && error != EINTR)
+	if (error < 0 && error != -EINTR)
 		err("%s: usb_control_msg() failed %d", __func__, error);
 }