linux-kernel - RE: [PATCH] regmap: mmio: Fix the bug of 'offset' value parsing.

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Date:	Wed, 2 Apr 2014 03:13:36 +0000
From:	"Li.Xiubo@...escale.com" <Li.Xiubo@...escale.com>
To:	Mark Brown <broonie@...nel.org>
CC:	"linux@...ck-us.net" <linux@...ck-us.net>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] regmap: mmio: Fix the bug of 'offset' value parsing.

> Subject: Re: [PATCH] regmap: mmio: Fix the bug of 'offset' value parsing.
> 
> On Mon, Mar 31, 2014 at 02:33:31PM +0800, Xiubo Li wrote:
> > 'offset = *(u32 *)reg;', this will be okey for 32/64-bit register, but
> > for 8/16-bit register, the 'offset' value will overflow.
> 
> This doesn't apply against regmap-v3.15, please check and resend.
> 
> > The core trace:
> > ===============
> > Unable to handle kernel paging request at virtual address ffbd0000
> > pgd = 871e8000
> > [ffbd0000] *pgd=00000000
> > Internal error: Oops: 805 [#1] ARM
> > Modules linked in:
> > CPU: 0 PID: 1004 Comm: sh Not tainted 3.14.0-rc6+ #990
> > task: 871baa40 ti: 87090000 task.ti: 87090000
> 
> Don't paste entire backtraces into commit messages, they're enormous and
> most of the detail isn't useful making it easy to miss relevant
> information - either pick relevant sections or just describe the
> failure.

Yes, I have resent this patch and have fixed the issue that you pointed out.

Thanks :)
--

Best Regards,
Xiubo
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