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

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Message-Id: <20200702114835.37889-1-colin.king@canonical.com>
Date:   Thu,  2 Jul 2020 12:48:35 +0100
From:   Colin King <colin.king@...onical.com>
To:     Cezary Rojewski <cezary.rojewski@...el.com>,
        Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.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: [PATCH][next] ASoC: Intel: bxt-da7219-max98357a: return -EINVAL on unrecognized speaker amplifier

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>
---
 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);
-- 
2.27.0