linux-kernel - Re: [PATCH 1/7] I2c-nomadik: Fix the usage of wait_for_completion

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Message-ID: <20121112172651.GC15159@pengutronix.de>
Date:	Mon, 12 Nov 2012 18:26:51 +0100
From:	Wolfram Sang <w.sang@...gutronix.de>
To:	Chuansheng Liu <chuansheng.liu@...el.com>
Cc:	linus.walleij@...aro.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-i2c@...r.kernel.org
Subject: Re: [PATCH 1/7] I2c-nomadik: Fix the usage of
 wait_for_completion_timeout

On Wed, Nov 07, 2012 at 01:18:37AM +0800, Chuansheng Liu wrote:
> 
> The return value of wait_for_completion_timeout() is always
> >= 0 with unsigned int type.
> 
> So the condition "ret < 0" or "ret >= 0" is pointless.
> 
> Signed-off-by: liu chuansheng <chuansheng.liu@...el.com>

You forgot to add the i2c-list, so I nearly overlooked this patch.
Luckily I haven't, so applied to for-next, thanks! Did you use a script
to find all occurences? Would be nice to know. Also, please take care of
the subject line. "I2c" is misspelled.

@Linus: I am not pushing out today, so if you want to add acks or so...

Thanks,

   Wolfram

> ---
>  drivers/i2c/busses/i2c-nomadik.c |   14 --------------
>  1 files changed, 0 insertions(+), 14 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
> index 02c3115..8b2ffcf 100644
> --- a/drivers/i2c/busses/i2c-nomadik.c
> +++ b/drivers/i2c/busses/i2c-nomadik.c
> @@ -435,13 +435,6 @@ static int read_i2c(struct nmk_i2c_dev *dev, u16 flags)
>  	timeout = wait_for_completion_timeout(
>  		&dev->xfer_complete, dev->adap.timeout);
>  
> -	if (timeout < 0) {
> -		dev_err(&dev->adev->dev,
> -			"wait_for_completion_timeout "
> -			"returned %d waiting for event\n", timeout);
> -		status = timeout;
> -	}
> -
>  	if (timeout == 0) {
>  		/* Controller timed out */
>  		dev_err(&dev->adev->dev, "read from slave 0x%x timed out\n",
> @@ -523,13 +516,6 @@ static int write_i2c(struct nmk_i2c_dev *dev, u16 flags)
>  	timeout = wait_for_completion_timeout(
>  		&dev->xfer_complete, dev->adap.timeout);
>  
> -	if (timeout < 0) {
> -		dev_err(&dev->adev->dev,
> -			"wait_for_completion_timeout "
> -			"returned %d waiting for event\n", timeout);
> -		status = timeout;
> -	}
> -
>  	if (timeout == 0) {
>  		/* Controller timed out */
>  		dev_err(&dev->adev->dev, "write to slave 0x%x timed out\n",
> -- 
> 1.7.0.4
> 
> 
> 

-- 
Pengutronix e.K.                           | Wolfram Sang                |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |

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