Re: [PATCH] USB: fix deadlock in HCD code
From: Oliver Neukum
Date: Wed May 21 2008 - 16:03:51 EST
Am Mittwoch 21 Mai 2008 16:46:45 schrieb Alan Stern:
> One possibility is that in an earlier call to finish_urb,
> usb_hcd_giveback_urb was called with interrupts disabled and returned
> with interrupts enabled. In other words, some driver's callback
> routine may have enabled interrupts incorrectly.
Are we sure the interrupt line is not shared with another driver that calls
spin_unlock_irq() in its interrupt handler?
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