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Correct drv_usb_kbd_init function

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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>
Acked-by: Markus Klotzbuecher <mk@denx.de>
This commit is contained in:
Ryan CHEN
2008-08-20 13:00:17 -04:00
committed by Wolfgang Denk
parent eba1f2fc75
commit 3b20fd83c7
1 changed files with 2 additions and 0 deletions
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2
common/usb_kbd.c
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@@ -162,6 +162,8 @@ int drv_usb_kbd_init(void)
/* scan all USB Devices */ /* scan all USB Devices */
for(i=0;i<USB_MAX_DEVICE;i++) { for(i=0;i<USB_MAX_DEVICE;i++) {
dev=usb_get_dev_index(i); /* get device */ dev=usb_get_dev_index(i); /* get device */
if(dev == NULL)
return -1;
if(dev->devnum!=-1) { if(dev->devnum!=-1) {
if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */ if(usb_kbd_probe(dev,0)==1) { /* Ok, we found a keyboard */
/* check, if it is already registered */ /* check, if it is already registered */