linux-kernel - Re: [PATCH][next] ASoC: Intel: bxt-da7219-max98357a: return -EINVAL on unrecognized speaker amplifier

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Date:   Thu, 2 Jul 2020 09:40:49 -0500
From:   Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
To:     Colin King <colin.king@...onical.com>,
        Cezary Rojewski <cezary.rojewski@...el.com>,
        Liam Girdwood <liam.r.girdwood@...ux.intel.com>,
        Jie Yang <yang.jie@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>, Brent Lu <brent.lu@...el.com>,
        alsa-devel@...a-project.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH][next] ASoC: Intel: bxt-da7219-max98357a: return -EINVAL
 on unrecognized speaker amplifier



On 7/2/20 6:48 AM, Colin King wrote:
> From: Colin Ian King <colin.king@...onical.com>
> 
> Currently if the ctx->spkamp is not recognized an error message is
> reported but the code continues to set up the device with uninitialized
> variables such as the number of widgets.  Fix this by returning -EINVAL
> for unrecognized speaker amplifier types.
> 
> Addresses-Coverity: ("Uninitialized scalar variable")
> Fixes: e1435a1feb18 ("ASoC: Intel: bxt-da7219-max98357a: support MAX98390 speaker amp")
> Signed-off-by: Colin Ian King <colin.king@...onical.com>

Sounds good, thanks Colin.

Acked-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>

> ---
>   sound/soc/intel/boards/bxt_da7219_max98357a.c | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/sound/soc/intel/boards/bxt_da7219_max98357a.c b/sound/soc/intel/boards/bxt_da7219_max98357a.c
> index 4d39253e796b..0c0a717823c4 100644
> --- a/sound/soc/intel/boards/bxt_da7219_max98357a.c
> +++ b/sound/soc/intel/boards/bxt_da7219_max98357a.c
> @@ -677,7 +677,7 @@ static int bxt_card_late_probe(struct snd_soc_card *card)
>   		break;
>   	default:
>   		dev_err(card->dev, "Invalid speaker amplifier %d\n", ctx->spkamp);
> -		break;
> +		return -EINVAL;
>   	}
>   
>   	err = snd_soc_dapm_new_controls(&card->dapm, widgets, num_widgets);
>