linux-kernel - Re: [PATCH 2/3] staging: iio: frequency: Remove useless type conversion

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Message-ID: <4cfab900-7632-2f34-7bb8-bd432a75904d@kernel.org>
Date:   Sun, 2 Apr 2017 09:44:05 +0100
From:   Jonathan Cameron <jic23@...nel.org>
To:     simran singhal <singhalsimran0@...il.com>
Cc:     knaack.h@....de, lars@...afoo.de, pmeerw@...erw.net,
        gregkh@...uxfoundation.org, linux-iio@...r.kernel.org,
        devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] staging: iio: frequency: Remove useless type
 conversion

On 31/03/17 16:08, simran singhal wrote:
> Some type conversions like casting a pointer to a pointer of same type,
> casting to the original type using addressof(&) operator etc. are not
> needed. Therefore, remove them. Done using coccinelle:
> 
> @@
> type t;
> t *p;
> t a;
> @@
> (
> - (t)(a)
> + a
> |
> - (t *)(p)
> + p
> |
> - (t *)(&a)
> + &a
> )
> 
> Signed-off-by: simran singhal <singhalsimran0@...il.com>
driver name in title please, plus a patch description rather more tailored
to the patch. 

> ---
>  drivers/staging/iio/frequency/ad9832.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c
> index 425b8ab..01bdf8e 100644
> --- a/drivers/staging/iio/frequency/ad9832.c
> +++ b/drivers/staging/iio/frequency/ad9832.c
> @@ -119,7 +119,7 @@ struct ad9832_state {
>  static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)
>  {
>  	unsigned long long freqreg = (u64)fout *
> -				     (u64)((u64)1L << AD9832_FREQ_BITS);
> +				     (u64)1L << AD9832_FREQ_BITS;
>  	do_div(freqreg, mclk);
>  	return freqreg;
>  }
>