Patch "ASoC: codecs: wcd938x: fix missing mbhc init error handling" has been added to the 5.15-stable tree

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This is a note to let you know that I've just added the patch titled

    ASoC: codecs: wcd938x: fix missing mbhc init error handling

to the 5.15-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-codecs-wcd938x-fix-missing-mbhc-init-error-handling.patch
and it can be found in the queue-5.15 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 7dfae2631bfbdebecd35fe7b472ab3cc95c9ed66 Mon Sep 17 00:00:00 2001
From: Johan Hovold <johan+linaro@xxxxxxxxxx>
Date: Mon, 3 Jul 2023 14:47:01 +0200
Subject: ASoC: codecs: wcd938x: fix missing mbhc init error handling

From: Johan Hovold <johan+linaro@xxxxxxxxxx>

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@xxxxxxxxxxxxxxx      # 5.15
Cc: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
Signed-off-by: Johan Hovold <johan+linaro@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230703124701.11734-1-johan+linaro@xxxxxxxxxx
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 sound/soc/codecs/wcd938x.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/sound/soc/codecs/wcd938x.c
+++ b/sound/soc/codecs/wcd938x.c
@@ -3621,6 +3621,8 @@ static int wcd938x_mbhc_init(struct snd_
 						     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));


Patches currently in stable-queue which might be from johan+linaro@xxxxxxxxxx are

queue-5.15/asoc-codecs-wcd938x-fix-missing-mbhc-init-error-handling.patch
queue-5.15/asoc-codecs-wcd938x-fix-resource-leaks-on-component-remove.patch
queue-5.15/asoc-codecs-wcd938x-fix-missing-clsh-ctrl-error-handling.patch
queue-5.15/asoc-codecs-wcd938x-fix-soundwire-initialisation-race.patch
queue-5.15/asoc-codecs-wcd934x-fix-resource-leaks-on-component-remove.patch
queue-5.15/asoc-codecs-wcd938x-fix-codec-initialisation-race.patch
queue-5.15/asoc-codecs-wcd-mbhc-v2-fix-resource-leaks-on-component-remove.patch



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