From: Vinod Koul <vinod.koul@intel.com>
To: Cong Ding <dinggnu@gmail.com>
Cc: Dan Williams <djbw@fb.com>,
Guennadi Liakhovetski <g.liakhovetski@gmx.de>,
Paul Mundt <lethal@linux-sh.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] dma: sh/shdma-base.c: remove unnecessary null pointer check
Date: Sun, 20 Jan 2013 05:55:41 -0800 [thread overview]
Message-ID: <20130120135541.GG23398@intel.com> (raw)
In-Reply-To: <1358209435-16429-1-git-send-email-dinggnu@gmail.com>
On Tue, Jan 15, 2013 at 01:23:48AM +0100, Cong Ding wrote:
> the variable chan is dereferenced in line 635, so it is no reason to check
> null again in line 641.
>
> Signed-off-by: Cong Ding <dinggnu@gmail.com>
> ---
> drivers/dma/sh/shdma-base.c | 3 ---
> 1 file changed, 3 deletions(-)
>
> diff --git a/drivers/dma/sh/shdma-base.c b/drivers/dma/sh/shdma-base.c
> index f4cd946..4acb85a 100644
> --- a/drivers/dma/sh/shdma-base.c
> +++ b/drivers/dma/sh/shdma-base.c
> @@ -638,9 +638,6 @@ static int shdma_control(struct dma_chan *chan, enum dma_ctrl_cmd cmd,
> unsigned long flags;
> int ret;
>
> - if (!chan)
> - return -EINVAL;
> -
> switch (cmd) {
> case DMA_TERMINATE_ALL:
> spin_lock_irqsave(&schan->chan_lock, flags);
Applied, Thanks
--
~Vinod
prev parent reply other threads:[~2013-01-20 14:20 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-15 0:23 [PATCH] dma: sh/shdma-base.c: remove unnecessary null pointer check Cong Ding
2013-01-20 13:55 ` Vinod Koul [this message]
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