linux-kernel - Re: [PATCH] amba-pl011: fix panic introduced by "clear pending interrupts"

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Message-ID: <4F71AE95.9080600@mvista.com>
Date:	Tue, 27 Mar 2012 16:12:05 +0400
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Alessandro Rubini <rubini@...dd.com>
CC:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Giancarlo Asnaghi <giancarlo.asnaghi@...com>,
	gregkh@...uxfoundation.org, linux-serial@...r.kernel.org,
	Alan Cox <alan@...ux.intel.com>
Subject: Re: [PATCH] amba-pl011: fix panic introduced by "clear pending interrupts"

Hello.

On 27-03-2012 0:32, Alessandro Rubini wrote:

> patch 9b96fba, currently in linux-next, clears interrupts using

    Please also specify the summary of this commit in parens.

> uap->port.membase that has not been assigned.  My x86 system,
> that uses a pci-to-amba bridge, panics with a message like:

>     BUG: unable to handle kernel NULL pointer dereference at 00000038
>     IP: [<c12c85ed>] pl011_probe+0x119/0x303

> Signed-off-by: Alessandro Rubini<rubini@...dd.com>
> Acked-by: Giancarlo Asnaghi<giancarlo.asnaghi@...com>

WBR, Sergei
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