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binding a device driver could fail.. handle this case

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@14493 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Christian Gmeiner 2007-08-28 20:50:41 +00:00
parent 195ef597f5
commit 4474d6827c
6 changed files with 19 additions and 11 deletions
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12
firmware/usbstack/core/core.c
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@ -378,6 +378,8 @@ static void update_driver_names(unsigned char* result) {
static void bind_device_driver(struct usb_device_driver* driver) {
int ret = 0;
/* look if there is an old driver */
if (usbcore.active_controller->device_driver != NULL) {
usbcore.active_controller->device_driver->unbind();
@ -387,7 +389,11 @@ static void bind_device_driver(struct usb_device_driver* driver) {
usbcore.active_controller->device_driver = driver;
/* init dirver */
driver->bind(usbcore.active_controller->controller_ops);
ret = driver->bind(usbcore.active_controller->controller_ops);
if (ret != 0) {
logf("binding of %s failed", driver->name);
usbcore.active_controller->device_driver = NULL;
usbcore.device_driver = NULL;
}
}