[PATCH] Properly unregister reboot notifier in case of failure in ehci hcd

[Aleksey Gorelov]

Hi,

  If some problem occurs during ehci startup, for instance, request_irq fails, echi hcd driver
tries it best to cleanup, but fails to unregister reboot notifier, which in turn leads to crash on
reboot/poweroff. Below is the patch against current git to fix this.
  I did not check if the same problem existed for uhci/ohci host drivers.

Signed off by: Aleks Gorelov <dared1st@xxxxxxxxx>

--- linux-2.6/drivers/usb/host/ehci-hcd.c-orig	2006-07-11 17:27:54.000000000 -0700
+++ linux-2.6/drivers/usb/host/ehci-hcd.c	2006-07-11 17:27:20.000000000 -0700
@@ -483,9 +483,6 @@
 	}
 	ehci->command = temp;
 
-	ehci->reboot_notifier.notifier_call = ehci_reboot;
-	register_reboot_notifier(&ehci->reboot_notifier);
-
 	return 0;
 }
 
@@ -499,7 +496,6 @@
 
 	/* EHCI spec section 4.1 */
 	if ((retval = ehci_reset(ehci)) != 0) {
-		unregister_reboot_notifier(&ehci->reboot_notifier);
 		ehci_mem_cleanup(ehci);
 		return retval;
 	}
@@ -560,6 +556,9 @@
 	 */
 	create_debug_files(ehci);
 
+	ehci->reboot_notifier.notifier_call = ehci_reboot;
+	register_reboot_notifier(&ehci->reboot_notifier);
+
 	return 0;
 }
 

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