linux-kernel - Re: [PATCH] ioatdma: Fix compiler warning

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Message-ID: <1375825955.7303.37.camel@x61.thuisdomein>
Date:	Tue, 06 Aug 2013 23:52:35 +0200
From:	Paul Bolle <pebolle@...cali.nl>
To:	Jon Mason <jon.mason@...el.com>
Cc:	Dan Williams <djbw@...com>, Dave Jiang <dave.jiang@...el.com>,
	Vinod Koul <vinod.koul@...el.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] ioatdma: Fix compiler warning

On Tue, 2013-08-06 at 14:36 -0700, Jon Mason wrote:
> GCC v4.6.3 complains:
> drivers/dma/ioat/dma_v3.c: In function ‘__ioat3_prep_pq16_lock’:
> drivers/dma/ioat/dma_v3.c:264:11: warning: array subscript is below array bounds [-Warray-bounds]
> drivers/dma/ioat/dma_v3.c:264:11: warning: array subscript is below array bounds [-Warray-bounds]
> 
> This is due to the possibility of idx being negative, thus being outside
> the boulds of the array.  Correct this by making idx an unsigned int.
> 
> Signed-off-by: Jon Mason <jon.mason@...el.com>

I tried to silence these warnings in
https://lkml.org/lkml/2013/6/17/233 . And again, after some feedback, in
https://lkml.org/lkml/2013/7/20/137 . Perhaps that second patch is
queued somewhere. I don't know.


Paul Bolle

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