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SubjectRe: [PATCH] ALSA: cs4281: remove redundant assignment to variable val and remove a goto


Am 05.07.2019 11:57, schrieb Colin King:
> From: Colin Ian King <colin.king@canonical.com>
>
> The variable val is being assigned with a value that is never
> read and it is being updated later with a new value. The
> assignment is redundant and can be removed. Also remove a
> goto statement and a label and replace with a break statement.
>
> Addresses-Coverity: ("Unused value")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> sound/pci/cs4281.c | 5 ++---
> 1 file changed, 2 insertions(+), 3 deletions(-)
>
> diff --git a/sound/pci/cs4281.c b/sound/pci/cs4281.c
> index a2cce3ecda6f..04c712647853 100644
> --- a/sound/pci/cs4281.c
> +++ b/sound/pci/cs4281.c
> @@ -694,7 +694,7 @@ static int snd_cs4281_trigger(struct snd_pcm_substream *substream, int cmd)
>
> static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
> {
> - unsigned int val = ~0;
> + unsigned int val;
>
> if (real_rate)
> *real_rate = rate;
> @@ -707,9 +707,8 @@ static unsigned int snd_cs4281_rate(unsigned int rate, unsigned int *real_rate)
> case 44100: return 1;
> case 48000: return 0;
> default:
> - goto __variable;
> + break;
> }
> - __variable:
> val = 1536000 / rate;
> if (real_rate)
> *real_rate = 1536000 / val;
^^^^^^^^^^^^^^^^^^^^^^^^^

this is confusing. is
*real_rate = rate
intended here ? (like above)

val could be eliminated by using

return 1536000 / rate ;

re,
wh

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