[PATCH] usb/core/hcd-pci.c: don't free_irq() on suspend

the free_irq() in USB suspend breaks resume on some setups where USB
(ohci/ehci) shares the interrupt with an other device.

Signed-off-by: Daniel Ritz <[e-mail]>
Signed-off-by: Linus Torvalds <[e-mail]>

drivers/usb/core/hcd-pci.c

···
 	case HC_STATE_SUSPENDED:
 		/* no DMA or IRQs except when HC is active */
 		if (dev->current_state == PCI_D0) {
-			free_irq (hcd->irq, hcd);
 			pci_save_state (dev);
 			pci_disable_device (dev);
 		}
···
 
 	hcd->state = HC_STATE_RESUMING;
 	hcd->saw_irq = 0;
-	retval = request_irq (dev->irq, usb_hcd_irq, SA_SHIRQ,
-				hcd->irq_descr, hcd);
-	if (retval < 0) {
-		dev_err (hcd->self.controller,
-			"can't restore IRQ after resume!\n");
-		usb_hc_died (hcd);
-		return retval;
-	}
 
 	retval = hcd->driver->resume (hcd);
 	if (!HC_IS_RUNNING (hcd->state)) {