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

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From: Peter Zijlstra

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

Date: Wednesday, May 21, 2008 - 3:26 pm

On Wed, 2008-05-21 at 14:09 +0200, Jiri Kosina wrote:
quoted text> hcd_urb_list_lock is used for synchronization between IRQ and non-IRQ 
> contexts, so the non-IRQ context has to disable IRQs in order to prevent 
> deadlocking with IRQ context.

Just wondering,... doesn't lockdep say anything about the situation?

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Messages in current thread:

[PATCH] USB: fix deadlock in HCD code, Jiri Kosina, (Wed May 21, 5:09 am)

Re: [PATCH] USB: fix deadlock in HCD code, Oliver Neukum, (Wed May 21, 6:21 am)

Re: [PATCH] USB: fix deadlock in HCD code, Jiri Kosina, (Wed May 21, 6:27 am)

Re: [PATCH] USB: fix deadlock in HCD code, Oliver Neukum, (Wed May 21, 6:32 am)

Re: [PATCH] USB: fix deadlock in HCD code, Jiri Kosina, (Wed May 21, 6:36 am)

Re: [PATCH] USB: fix deadlock in HCD code, Oliver Neukum, (Wed May 21, 6:40 am)

Re: [PATCH] USB: fix deadlock in HCD code, Oliver Neukum, (Wed May 21, 6:47 am)

Re: [PATCH] USB: fix deadlock in HCD code, Alan Stern, (Wed May 21, 7:13 am)

Re: [PATCH] USB: fix deadlock in HCD code, Jiri Kosina, (Wed May 21, 7:22 am)

Re: [PATCH] USB: fix deadlock in HCD code, David Vrabel, (Wed May 21, 7:29 am)

Re: [PATCH] USB: fix deadlock in HCD code, Oliver Neukum, (Wed May 21, 7:31 am)

Re: [PATCH] USB: fix deadlock in HCD code, Alan Stern, (Wed May 21, 7:42 am)

Re: [PATCH] USB: fix deadlock in HCD code, Alan Stern, (Wed May 21, 7:46 am)

Re: [PATCH] USB: fix deadlock in HCD code, David Vrabel, (Wed May 21, 7:53 am)

Re: [PATCH] USB: fix deadlock in HCD code, Alan Stern, (Wed May 21, 7:58 am)

Re: [PATCH] USB: fix deadlock in HCD code, Leonardo Chiquitto, (Wed May 21, 12:32 pm)

Re: [PATCH] USB: fix deadlock in HCD code, Oliver Neukum, (Wed May 21, 1:03 pm)

Re: [PATCH] USB: fix deadlock in HCD code, Peter Zijlstra, (Wed May 21, 3:26 pm)


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