From: Johan Hovold <johan+linaro@kernel.org>
Date: Mon, 3 Jul 2023 14:47:01 +0200
Subject: [PATCH] ASoC: codecs: wcd938x: fix missing mbhc init error handling
References: bsc#1012628
Patch-mainline: 6.4.7
Git-commit: 7dfae2631bfbdebecd35fe7b472ab3cc95c9ed66
commit 7dfae2631bfbdebecd35fe7b472ab3cc95c9ed66 upstream.
MBHC initialisation can fail so add the missing error handling to avoid
dereferencing an error pointer when later configuring the jack:
Unable to handle kernel paging request at virtual address fffffffffffffff8
pc : wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc]
lr : wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x]
Call trace:
wcd_mbhc_start+0x28/0x380 [snd_soc_wcd_mbhc]
wcd938x_codec_set_jack+0x28/0x48 [snd_soc_wcd938x]
snd_soc_component_set_jack+0x28/0x8c [snd_soc_core]
qcom_snd_wcd_jack_setup+0x7c/0x19c [snd_soc_qcom_common]
sc8280xp_snd_init+0x20/0x2c [snd_soc_sc8280xp]
snd_soc_link_init+0x28/0x90 [snd_soc_core]
snd_soc_bind_card+0x628/0xbfc [snd_soc_core]
snd_soc_register_card+0xec/0x104 [snd_soc_core]
devm_snd_soc_register_card+0x4c/0xa4 [snd_soc_core]
sc8280xp_platform_probe+0xf0/0x108 [snd_soc_sc8280xp]
Fixes: bcee7ed09b8e ("ASoC: codecs: wcd938x: add Multi Button Headset Control support")
Cc: stable@vger.kernel.org # 5.15
Cc: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
Link: https://lore.kernel.org/r/20230703124701.11734-1-johan+linaro@kernel.org
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
sound/soc/codecs/wcd938x.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/sound/soc/codecs/wcd938x.c b/sound/soc/codecs/wcd938x.c
index 81b689e7..28a2ac6a 100644
--- a/sound/soc/codecs/wcd938x.c
+++ b/sound/soc/codecs/wcd938x.c
@@ -2625,6 +2625,8 @@ static int wcd938x_mbhc_init(struct snd_soc_component *component)
WCD938X_IRQ_HPHR_OCP_INT);
wcd938x->wcd_mbhc = wcd_mbhc_init(component, &mbhc_cb, intr_ids, wcd_mbhc_fields, true);
+ if (IS_ERR(wcd938x->wcd_mbhc))
+ return PTR_ERR(wcd938x->wcd_mbhc);
snd_soc_add_component_controls(component, impedance_detect_controls,
ARRAY_SIZE(impedance_detect_controls));
--
2.35.3