linux-kernel - [PATCH 4/8] ASoC: rt5640: Fix sleep in atomic context

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Message-ID: <1687433656-7892-5-git-send-email-spujar@nvidia.com>
Date:   Thu, 22 Jun 2023 17:04:12 +0530
From:   Sameer Pujar <spujar@...dia.com>
To:     <broonie@...nel.org>, <robh+dt@...nel.org>, <krzk+dt@...nel.org>,
        <thierry.reding@...il.com>, <lgirdwood@...il.com>,
        <perex@...ex.cz>, <tiwai@...e.com>
CC:     <jonathanh@...dia.com>, <mkumard@...dia.com>, <sheetal@...dia.com>,
        <alsa-devel@...a-project.org>, <devicetree@...r.kernel.org>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Sameer Pujar <spujar@...dia.com>, <stable@...r.kernel.org>,
        Oder Chiou <oder_chiou@...ltek.com>
Subject: [PATCH 4/8] ASoC: rt5640: Fix sleep in atomic context

Following prints are observed while testing audio on Jetson AGX Orin which
has onboard RT5640 audio codec:

  BUG: sleeping function called from invalid context at kernel/workqueue.c:3027
  in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 0, name: swapper/0
  preempt_count: 10001, expected: 0
  RCU nest depth: 0, expected: 0
  ------------[ cut here ]------------
  WARNING: CPU: 0 PID: 0 at kernel/irq/handle.c:159 __handle_irq_event_percpu+0x1e0/0x270
  ---[ end trace ad1c64905aac14a6 ]-

The IRQ handler rt5640_irq() runs in interrupt context and can sleep
during cancel_delayed_work_sync().

Fix this by running IRQ handler, rt5640_irq(), in thread context.
Hence replace request_irq() calls with devm_request_threaded_irq().

Fixes: 051dade34695 ("ASoC: rt5640: Fix the wrong state of JD1 and JD2")
Cc: stable@...r.kernel.org
Cc: Oder Chiou <oder_chiou@...ltek.com>
Signed-off-by: Sameer Pujar <spujar@...dia.com>
---
 sound/soc/codecs/rt5640.c | 20 ++++++++++++--------
 1 file changed, 12 insertions(+), 8 deletions(-)

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index c7d2f31..a54d2bd 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -2552,9 +2552,11 @@ static void rt5640_enable_jack_detect(struct snd_soc_component *component,
 		rt5640->jd_gpio = jack_data->jd_gpio;
 		rt5640->jd_gpio_irq = gpiod_to_irq(rt5640->jd_gpio);
 
-		ret = request_irq(rt5640->jd_gpio_irq, rt5640_jd_gpio_irq,
-				  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
-				  "rt5640-jd-gpio", rt5640);
+		ret = devm_request_threaded_irq(component->dev,
+				rt5640->jd_gpio_irq,
+				NULL, rt5640_jd_gpio_irq,
+				IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,
+				"rt5640-jd-gpio", rt5640);
 		if (ret) {
 			dev_warn(component->dev, "Failed to request jd GPIO IRQ %d: %d\n",
 				 rt5640->jd_gpio_irq, ret);
@@ -2567,9 +2569,10 @@ static void rt5640_enable_jack_detect(struct snd_soc_component *component,
 	if (jack_data && jack_data->use_platform_clock)
 		rt5640->use_platform_clock = jack_data->use_platform_clock;
 
-	ret = request_irq(rt5640->irq, rt5640_irq,
-			  IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-			  "rt5640", rt5640);
+	ret = devm_request_threaded_irq(component->dev, rt5640->irq,
+			NULL, rt5640_irq,
+			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+			"rt5640", rt5640);
 	if (ret) {
 		dev_warn(component->dev, "Failed to reguest IRQ %d: %d\n", rt5640->irq, ret);
 		rt5640_disable_jack_detect(component);
@@ -2622,8 +2625,9 @@ static void rt5640_enable_hda_jack_detect(
 
 	rt5640->jack = jack;
 
-	ret = request_irq(rt5640->irq, rt5640_irq,
-			  IRQF_TRIGGER_RISING | IRQF_ONESHOT, "rt5640", rt5640);
+	ret = devm_request_threaded_irq(component->dev, rt5640->irq,
+			NULL, rt5640_irq, IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+			"rt5640", rt5640);
 	if (ret) {
 		dev_warn(component->dev, "Failed to reguest IRQ %d: %d\n", rt5640->irq, ret);
 		rt5640->irq = -ENXIO;
-- 
2.7.4