Re: [PATCH] USB: fix deadlock in HCD code

From: Jiri Kosina
Date: Wed May 21 2008 - 09:37:06 EST

On Wed, 21 May 2008, Oliver Neukum wrote:

> This turns out not to be the case. Interrupts are disabled.

You're right, this callchain can't cause the deadlock indeed. I'll go
through the other possibilities.

To give some background to others reading this thread -- Leonardo (in CC)
reported [1] that this patch fixes hard kernel hangs he has been seeing
when using USB CDMA modem.

Still, we don't currently seem to see the place where the interrupts get
enabled that makes the deadlock to trigger.


Jiri Kosina
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