This is a note to let you know that I've just added the patch titled ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER to the 4.19-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-cs42l42-defer-probe-if-request_threaded_irq-ret.patch and it can be found in the queue-4.19 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit f20d7edf3860914af9647532700500a90ec0ab30 Author: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx> Date: Fri Oct 15 14:36:08 2021 +0100 ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER [ Upstream commit 0306988789d9d91a18ff70bd2bf165d3ae0ef1dd ] The driver can run without an interrupt so if devm_request_threaded_irq() failed, the probe() just carried on. But if this was EPROBE_DEFER the driver would continue without an interrupt instead of deferring to wait for the interrupt to become available. Fixes: 2c394ca79604 ("ASoC: Add support for CS42L42 codec") Signed-off-by: Richard Fitzgerald <rf@xxxxxxxxxxxxxxxxxxxxx> Link: https://lore.kernel.org/r/20211015133619.4698-6-rf@xxxxxxxxxxxxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c index f9d6534d4632d..9471ba17e371b 100644 --- a/sound/soc/codecs/cs42l42.c +++ b/sound/soc/codecs/cs42l42.c @@ -1799,8 +1799,9 @@ static int cs42l42_i2c_probe(struct i2c_client *i2c_client, NULL, cs42l42_irq_thread, IRQF_ONESHOT | IRQF_TRIGGER_LOW, "cs42l42", cs42l42); - - if (ret != 0) + if (ret == -EPROBE_DEFER) + goto err_disable; + else if (ret != 0) dev_err(&i2c_client->dev, "Failed to request IRQ: %d\n", ret);