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usb: Check usb_new_device for failure

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This checks that a new USB device is correctly initialized and frees it if not.
In addition, this doesn't report that USB was started when no device was found.

Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
This commit is contained in:
Paul Kocialkowski 2015-04-04 15:12:28 +02:00 committed by Marek Vasut
parent 5a80b3449b
commit 8879be8857
1 changed files with 10 additions and 4 deletions
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14
common/usb.c
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@ -95,18 +95,24 @@ int usb_init(void)
start_index = dev_index;
printf("scanning bus %d for devices... ", i);
dev = usb_alloc_new_device(ctrl);
if (!dev)
break;
/*
* device 0 is always present
* (root hub, so let it analyze)
*/
if (dev)
usb_new_device(dev);
ret = usb_new_device(dev);
if (ret)
usb_free_device();
if (start_index == dev_index)
if (start_index == dev_index) {
puts("No USB Device found\n");
else
continue;
} else {
printf("%d USB Device(s) found\n",
dev_index - start_index);
}
usb_started = 1;
}