linux-kernel - Re: [PATCH] iio-light: Use a signed return type for ltr501_match_samp

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Message-ID: <56757198.6020001@kernel.org>
Date:	Sat, 19 Dec 2015 15:02:48 +0000
From:	Jonathan Cameron <jic23@...nel.org>
To:	SF Markus Elfring <elfring@...rs.sourceforge.net>,
	linux-iio@...r.kernel.org, Hartmut Knaack <knaack.h@....de>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Peter Meerwald <pmeerw@...erw.net>
Cc:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: Re: [PATCH] iio-light: Use a signed return type for
 ltr501_match_samp_freq()

On 19/12/15 13:23, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@...rs.sourceforge.net>
> Date: Sat, 19 Dec 2015 14:14:54 +0100
> 
> The return type "unsigned int" was used by the ltr501_match_samp_freq()
> function despite of the aspect that it will eventually return a negative
> error code.
> Improve this implementation detail by deletion of the type modifier then.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
Applied to the fixes-togreg branch of iio.git and marked for stable.

Peter, I'll probably hold this locally for a few days anyway as Greg
hasn't picked up the previous pull request yet. So if you want
to add anything give me a shout.

Jonathan
> ---
>  drivers/iio/light/ltr501.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
> index 809a961..6bf89d8 100644
> --- a/drivers/iio/light/ltr501.c
> +++ b/drivers/iio/light/ltr501.c
> @@ -180,7 +180,7 @@ static const struct ltr501_samp_table ltr501_ps_samp_table[] = {
>  			{500000, 2000000}
>  };
>  
> -static unsigned int ltr501_match_samp_freq(const struct ltr501_samp_table *tab,
> +static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab,
>  					   int len, int val, int val2)
>  {
>  	int i, freq;
> 

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