[PATCH v2 3/5] ASoC: rt5640: Fix sleep in atomic context

Sameer Pujar
2023-06-29T05:13:39Z

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@vger.kernel.org
Cc: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
---
sound/soc/codecs/rt5640.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c
index 0ed4fa2..e24ed75 100644
--- a/sound/soc/codecs/rt5640.c
+++ b/sound/soc/codecs/rt5640.c
@@ -2567,9 +2567,10 @@ 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 +2623,9 @@ 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