linux-kernel - Re: [PATCH 6/6] dma/imx-sdma: check whether event_id0 < 32 when set event_mask

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Message-ID: <20120111005322.GB2414@b20223-02.ap.freescale.net>
Date:	Wed, 11 Jan 2012 08:53:23 +0800
From:	Richard Zhao <richard.zhao@...escale.com>
To:	Shawn Guo <shawn.guo@...aro.org>
CC:	Richard Zhao <richard.zhao@...aro.org>, <patches@...aro.org>,
	<vinod.koul@...el.com>, <linux-kernel@...r.kernel.org>,
	<eric.miao@...aro.org>, <kernel@...gutronix.de>,
	<dan.j.williams@...el.com>, <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 6/6] dma/imx-sdma: check whether event_id0 < 32 when set
 event_mask

On Tue, Jan 10, 2012 at 11:38:39PM +0800, Shawn Guo wrote:
> On Tue, Jan 10, 2012 at 10:29:42PM +0800, Richard Zhao wrote:
> > On Tue, Jan 10, 2012 at 10:20:10PM +0800, Shawn Guo wrote:
> > > On Tue, Jan 10, 2012 at 03:01:50PM +0800, Richard Zhao wrote:
> > > > Signed-off-by: Richard Zhao <richard.zhao@...aro.org>
> > > > ---
> > > 
> > > I think it deserves a sensible commit message explaining why the patch
> > > is needed.
> > If event_id0 < 32, 1 << (sdmac->event_id0 - 32) is not zero.
This meant to make you clear about the patch. I'll add it in commit
message.
> > 
> My point is you may explain the exact problem you are seeing without
> this patch
The kernel don't have event_id < 32 case yet. I found the bug when
I review the code.
> and how the patch helps here.  In general, doing so would
> win a warm feeling from reviewers much more easily than leaving the
> commit message empty there.
I understand your point that comment as much as possible.

Thanks
Richard
> 
> -- 
> Regards,
> Shawn
> 
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 

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