From 0306988789d9d91a18ff70bd2bf165d3ae0ef1dd Mon Sep 17 00:00:00 2001
From: Richard Fitzgerald <rf@opensource.cirrus.com>
Date: Fri, 15 Oct 2021 14:36:08 +0100
Subject: [PATCH] ASoC: cs42l42: Defer probe if request_threaded_irq() returns EPROBE_DEFER
Git-commit: 0306988789d9d91a18ff70bd2bf165d3ae0ef1dd
Patch-mainline: v5.16-rc1
References: git-fixes stable-5.14.19
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@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211015133619.4698-6-rf@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
sound/soc/codecs/cs42l42.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/sound/soc/codecs/cs42l42.c b/sound/soc/codecs/cs42l42.c
index e5a97e904d40..dc84b3de3da3 100644
--- a/sound/soc/codecs/cs42l42.c
+++ b/sound/soc/codecs/cs42l42.c
@@ -1935,8 +1935,9 @@ 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);
--
2.26.2