linux-kernel - Re: [PATCH 7/8] ASoC: tegra: tegra20_das: remove always-true comparison

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Date:   Mon, 6 Jul 2020 16:16:18 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        <alsa-devel@...a-project.org>
CC:     <tiwai@...e.de>, <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Thierry Reding <thierry.reding@...il.com>,
        YueHaibing <yuehaibing@...wei.com>,
        "open list:TEGRA ARCHITECTURE SUPPORT" <linux-tegra@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 7/8] ASoC: tegra: tegra20_das: remove always-true
 comparison


On 02/07/2020 17:59, Pierre-Louis Bossart wrote:
> Fix W=1 warning:
> 
> sound/soc//tegra/tegra20_das.c:101:11: warning:
> comparison of unsigned expression >= 0 is always true [-Wtype-limits]
>   101 |  if ((reg >= TEGRA20_DAS_DAP_CTRL_SEL) &&
>       |           ^~
> 
> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> ---
>  sound/soc/tegra/tegra20_das.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/sound/soc/tegra/tegra20_das.c b/sound/soc/tegra/tegra20_das.c
> index 1070b2710d5e..79dba878d854 100644
> --- a/sound/soc/tegra/tegra20_das.c
> +++ b/sound/soc/tegra/tegra20_das.c
> @@ -98,8 +98,7 @@ EXPORT_SYMBOL_GPL(tegra20_das_connect_dac_to_dap);
>  
>  static bool tegra20_das_wr_rd_reg(struct device *dev, unsigned int reg)
>  {
> -	if ((reg >= TEGRA20_DAS_DAP_CTRL_SEL) &&
> -	    (reg <= LAST_REG(DAP_CTRL_SEL)))
> +	if (reg <= LAST_REG(DAP_CTRL_SEL))
>  		return true;
>  	if ((reg >= TEGRA20_DAS_DAC_INPUT_DATA_CLK_SEL) &&
>  	    (reg <= LAST_REG(DAC_INPUT_DATA_CLK_SEL)))
> 

Thanks!

Reviewed-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
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