[U-Boot] [PATCH V2 6/8] usb: check return value of submit_{control, bulk}_msg

[Ilya Yanok]

Return values of submit_{control,bulk}_msg() functions
should be checked to detect possible error.

Signed-off-by: Ilya Yanok <ilya.yanok at cogentembedded.com>
---
 common/usb.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/common/usb.c b/common/usb.c
index 46f4741..1b40228 100644
--- a/common/usb.c
+++ b/common/usb.c
@@ -188,7 +188,8 @@ int usb_control_msg(struct usb_device *dev, unsigned int pipe,
 		   request, requesttype, value, index, size);
 	dev->status = USB_ST_NOT_PROC; /*not yet processed */
 
-	submit_control_msg(dev, pipe, data, size, setup_packet);
+	if (submit_control_msg(dev, pipe, data, size, setup_packet) < 0)
+		return -1;
 	if (timeout == 0)
 		return (int)size;
 
@@ -220,7 +221,8 @@ int usb_bulk_msg(struct usb_device *dev, unsigned int pipe,
 	if (len < 0)
 		return -1;
 	dev->status = USB_ST_NOT_PROC; /*not yet processed */
-	submit_bulk_msg(dev, pipe, data, len);
+	if (submit_bulk_msg(dev, pipe, data, len) < 0)
+		return -1;
 	while (timeout--) {
 		if (!((volatile unsigned long)dev->status & USB_ST_NOT_PROC))
 			break;
-- 
1.7.9.5