linux-kernel - RE: XHCI: sleep inside atomic

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Message-ID: <2DEEA3AB13739D45A22ADDB5086AEA0B7AF518@sshaexmb1.amd.com>
Date:	Mon, 25 Oct 2010 17:10:50 +0800
From:	"Xu, Andiry" <Andiry.Xu@....com>
To:	Jiri Slaby <jirislaby@...il.com>
CC:	"Nguyen, Dong" <Dong.Nguyen@....com>,
	"Yang, Libin" <Libin.Yang@....com>,
	<sarah.a.sharp@...ux.intel.com>, Greg KH <gregkh@...e.de>,
	USB list <linux-usb@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: RE: XHCI: sleep inside atomic

Hmm....You're right. Thanks for catching this, I'll submit a patch
later.

Thanks & Best regards,
Andiry
 
> -----Original Message-----
> From: Jiri Slaby [mailto:jirislaby@...il.com]
> Sent: Saturday, October 23, 2010 4:17 PM
> To: Xu, Andiry
> Cc: Nguyen, Dong; Yang, Libin; sarah.a.sharp@...ux.intel.com; Greg KH;
USB
> list; LKML
> Subject: XHCI: sleep inside atomic
> 
> Hi,
> 
> Stanse found that commit
>     USB: xHCI: PCI power management implementation
> added xhci_setup_msix->kmalloc(GFP_KERNEL) and request_irq inside
> xhci->lock spinlock. As these functions may sleep, this is
deadlockable.
> Could you fix that?
> 
> thanks,
> --
> js


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