linux-kernel - Re: [PATCH] iommu/msm: Fix error handling in msm_iommu

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Date:	Fri, 27 Jan 2012 17:40:29 +0100
From:	Joerg Roedel <joerg.roedel@....com>
To:	David Brown <davidb@...eaurora.org>
CC:	<iommu@...ts.linux-foundation.org>, <linux-kernel@...r.kernel.org>,
	Stepan Moskovchenko <stepanm@...eaurora.org>
Subject: Re: [PATCH] iommu/msm: Fix error handling in msm_iommu_unmap()

On Thu, Jan 26, 2012 at 04:06:30PM -0800, David Brown wrote:
> On Thu, Jan 26, 2012 at 06:29:44PM +0100, Joerg Roedel wrote:
> > Error handling in msm_iommu_unmap() is broken. On some error
> > conditions retval is set to a non-zero value which causes
> > the function to return 'len' at the end. This hides the
> > error from the user. Zero should be returned in those error
> > cases.
> > 
> > Cc: David Brown <davidb@...eaurora.org>
> > Cc: Stepan Moskovchenko <stepanm@...eaurora.org>
> > Signed-off-by: Joerg Roedel <joerg.roedel@....com>
> > ---
> >  drivers/iommu/msm_iommu.c |    7 +------
> >  1 files changed, 1 insertions(+), 6 deletions(-)
> 
> Acked-by: David Brown <davidb@...eaurora.org>

Thanks. I'll queue this up with iommu fixes for 3.3 and mark it for
stable as well.


	Joerg

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