linux-kernel - Re: [PATCH][V2] dmaengine: coh901318: fix integer overflow when shifting more than 32 places

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Date:   Fri, 30 Sep 2016 23:19:11 +0530
From:   Vinod Koul <vinod.koul@...el.com>
To:     Colin King <colin.king@...onical.com>
Cc:     Linus Walleij <linus.walleij@...aro.org>,
        Dan Williams <dan.j.williams@...el.com>,
        linux-arm-kernel@...ts.infradead.org, dmaengine@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH][V2] dmaengine: coh901318: fix integer overflow when
 shifting more than 32 places

On Thu, Sep 29, 2016 at 07:14:38PM +0100, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Currently U300_DMA_CHANNELS is set to 40, meaning that the shift of 1 can
> be more than 32 places, which leads to a 32 bit integer overflow. Fix this
> by using 1ULL instead of 1 before shifting it.  Also add braces on the
> for-loop to keep with coding style conventions.

Applied, thanks

-- 
~Vinod