linux-kernel - Re: [PATCH -next] ASoC: fsl: lpc3xxx-i2s: Remove set but not used variable 'savedbitclkrate'

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Message-ID: <CAG+cZ05LGBsNODyAaApS1uoPXPh7Cchp8utm_AAWoM09HZzOzw@mail.gmail.com>
Date: Wed, 31 Jul 2024 10:25:51 +0200
From: Piotr Wojtaszczyk <piotr.wojtaszczyk@...esys.com>
To: Yue Haibing <yuehaibing@...wei.com>
Cc: jonathan.downing@...tel.com, vz@...ia.com, lgirdwood@...il.com, 
	broonie@...nel.org, perex@...ex.cz, tiwai@...e.com, 
	alsa-devel@...a-project.org, linuxppc-dev@...ts.ozlabs.org, 
	linux-sound@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -next] ASoC: fsl: lpc3xxx-i2s: Remove set but not used
 variable 'savedbitclkrate'

On Wed, Jul 31, 2024 at 4:39 AM Yue Haibing <yuehaibing@...wei.com> wrote:
>
> The variable savedbitclkrate is assigned and never used, so can be removed.
>
> sound/soc/fsl/lpc3xxx-i2s.c:42:13: warning: variable ‘savedbitclkrate’ set but not used [-Wunused-but-set-variable]
>
> Fixes: 0959de657a10 ("ASoC: fsl: Add i2s and pcm drivers for LPC32xx CPUs")
> Signed-off-by: Yue Haibing <yuehaibing@...wei.com>
> ---
>  sound/soc/fsl/lpc3xxx-i2s.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
>
> diff --git a/sound/soc/fsl/lpc3xxx-i2s.c b/sound/soc/fsl/lpc3xxx-i2s.c
> index af995ca081a3..62ef624d6dd4 100644
> --- a/sound/soc/fsl/lpc3xxx-i2s.c
> +++ b/sound/soc/fsl/lpc3xxx-i2s.c
> @@ -39,7 +39,7 @@ static void __lpc3xxx_find_clkdiv(u32 *clkx, u32 *clky, int freq, int xbytes, u3
>  {
>         u32 i2srate;
>         u32 idxx, idyy;
> -       u32 savedbitclkrate, diff, trate, baseclk;
> +       u32 diff, trate, baseclk;
>
>         /* Adjust rate for sample size (bits) and 2 channels and offset for
>          * divider in clock output
> @@ -53,14 +53,12 @@ static void __lpc3xxx_find_clkdiv(u32 *clkx, u32 *clky, int freq, int xbytes, u3
>
>         /* Find the best divider */
>         *clkx = *clky = 0;
> -       savedbitclkrate = 0;
>         diff = ~0;
>         for (idxx = 1; idxx < 0xFF; idxx++) {
>                 for (idyy = 1; idyy < 0xFF; idyy++) {
>                         trate = (baseclk * idxx) / idyy;
>                         if (abs(trate - i2srate) < diff) {
>                                 diff = abs(trate - i2srate);
> -                               savedbitclkrate = trate;
>                                 *clkx = idxx;
>                                 *clky = idyy;
>                         }
> --
> 2.34.1
>

Looks good, thanks.

-- 
Piotr Wojtaszczyk
Timesys