public inbox for u-boot@lists.denx.de
 help / color / mirror / Atom feed
* [U-Boot] [PATCH] Correct drv_usb_kbd_init function
@ 2008-08-20 17:00 Ryan CHEN
  2008-09-09 14:35 ` Markus Klotzbücher
  2008-09-09 15:03 ` Wolfgang Denk
  0 siblings, 2 replies; 4+ messages in thread
From: Ryan CHEN @ 2008-08-20 17:00 UTC (permalink / raw)
  To: u-boot

The patch is that check if usb_get_dev_index() function return valid pointer.
If valid, continue. Otherwise return -1.

Signed-off-by: Ryan Chen <ryan.chen@st.com>

---
 common/usb_kbd.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/common/usb_kbd.c b/common/usb_kbd.c
index c876495..880e616 100644
--- a/common/usb_kbd.c
+++ b/common/usb_kbd.c
@@ -164,6 +164,8 @@ int drv_usb_kbd_init(void)
 	/* scan all USB Devices */
 	for(i=0;i<USB_MAX_DEVICE;i++) {
 		dev=usb_get_dev_index(i); /* get device */
+		if(dev == NULL)
+			return -1;
 		if(dev->devnum!=-1) {
 			if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */
 				/* check, if it is already registered */
-- 
1.6.0.rc1

^ permalink raw reply related	[flat|nested] 4+ messages in thread

end of thread, other threads:[~2008-09-09 15:03 UTC | newest]

Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2008-08-20 17:00 [U-Boot] [PATCH] Correct drv_usb_kbd_init function Ryan CHEN
2008-09-09 14:35 ` Markus Klotzbücher
2008-09-09 15:03   ` Wolfgang Denk
2008-09-09 15:03 ` Wolfgang Denk

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox