Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 14/21] SoC: rt274: Fix internal jack assignment in set_jack callback | Date | Tue, 25 Jun 2019 23:44:59 -0400 |
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From: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com>
[ Upstream commit 04268bf2757a125616b6c2140e6250f43b7b737a ]
When we call snd_soc_component_set_jack(component, NULL, NULL) we should set rt274->jack to passed jack, so when interrupt is triggered it calls snd_soc_jack_report(rt274->jack, ...) with proper value.
This fixes problem in machine where in register, we call snd_soc_register(component, &headset, NULL), which just calls rt274_mic_detect via callback. Now when machine driver is removed "headset" will be gone, so we need to tell codec driver that it's gone with: snd_soc_register(component, NULL, NULL), but we also need to be able to handle NULL jack argument here gracefully. If we don't set it to NULL, next time the rt274_irq runs it will call snd_soc_jack_report with first argument being invalid pointer and there will be Oops.
Signed-off-by: Amadeusz Sławiński <amadeuszx.slawinski@linux.intel.com> Signed-off-by: Mark Brown <broonie@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org> --- sound/soc/codecs/rt274.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/sound/soc/codecs/rt274.c b/sound/soc/codecs/rt274.c index cd048df76232..43086ac9ffec 100644 --- a/sound/soc/codecs/rt274.c +++ b/sound/soc/codecs/rt274.c @@ -398,6 +398,8 @@ static int rt274_mic_detect(struct snd_soc_codec *codec, { struct rt274_priv *rt274 = snd_soc_codec_get_drvdata(codec); + rt274->jack = jack; + if (jack == NULL) { /* Disable jack detection */ regmap_update_bits(rt274->regmap, RT274_EAPD_GPIO_IRQ_CTRL, @@ -405,7 +407,6 @@ static int rt274_mic_detect(struct snd_soc_codec *codec, return 0; } - rt274->jack = jack; regmap_update_bits(rt274->regmap, RT274_EAPD_GPIO_IRQ_CTRL, RT274_IRQ_EN, RT274_IRQ_EN); -- 2.20.1
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