From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Thu, 4 Jun 2015 13:04:14 +0000 (+0300)
Subject: ASoC: tas2552: Fix kernel crash when the codec is loaded but not part of a card
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=80ba2669ec8c3e6517aa935001f6cb8809bf3df4;p=linux-beck.git

ASoC: tas2552: Fix kernel crash when the codec is loaded but not part of a card

If the card is not part of any card the tas_data->codec is NULL since it is
set only during snd_soc_codec_driver.probe, which is not yet called.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: stable@vger.kernel.org
---

diff --git a/sound/soc/codecs/tas2552.c b/sound/soc/codecs/tas2552.c
index ff82f46ba504..df89947f1032 100644
--- a/sound/soc/codecs/tas2552.c
+++ b/sound/soc/codecs/tas2552.c
@@ -120,6 +120,9 @@ static void tas2552_sw_shutdown(struct tas2552_data *tas_data, int sw_shutdown)
 {
 	u8 cfg1_reg;
 
+	if (!tas_data->codec)
+		return;
+
 	if (sw_shutdown)
 		cfg1_reg = 0;
 	else