queue-7.2/iio-chemical-sgp30-handle-iaq-thread-creation-failure.patch

From 1135d6875d2dbda3f6ec718f3421a6ce4378bd63 Mon Sep 17 00:00:00 2001
From: Linmao Li <lilinmao@kylinos.cn>
Date: Wed, 22 Jul 2026 15:48:37 +0800
Subject: iio: chemical: sgp30: Handle IAQ thread creation failure

From: Linmao Li <lilinmao@kylinos.cn>

commit 1135d6875d2dbda3f6ec718f3421a6ce4378bd63 upstream.

kthread_run() can fail and return an error pointer, but sgp_probe() stores
it and returns success, so the device is registered without its IAQ thread
and sgp_remove() later passes the error pointer to kthread_stop(). Return
the error from probe instead.

Fixes: ce514124161a ("iio: chemical: sgp30: Support Sensirion SGP30/SGPC3 sensors")
Signed-off-by: Linmao Li <lilinmao@kylinos.cn>
Reviewed-by: Joshua Crofts <joshua.crofts1@gmail.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <jonathan.cameron@oss.qualcomm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/iio/chemical/sgp30.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/iio/chemical/sgp30.c
+++ b/drivers/iio/chemical/sgp30.c
@@ -548,6 +548,9 @@ static int sgp_probe(struct i2c_client *
 
 	data->iaq_thread = kthread_run(sgp_iaq_threadfn, data,
 				       "%s-iaq", data->client->name);
+	if (IS_ERR(data->iaq_thread))
+		return dev_err_probe(dev, PTR_ERR(data->iaq_thread),
+				     "failed to start IAQ thread\n");
 
 	return 0;
 }