[PATCH] iio: chemical: sgp30: Handle IAQ thread creation failure

[Linmao Li]

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@xxxxxxxxxx>
---
 drivers/iio/chemical/sgp30.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/iio/chemical/sgp30.c b/drivers/iio/chemical/sgp30.c
index f10bbebc29e4..379c1c4af8d8 100644
--- a/drivers/iio/chemical/sgp30.c
+++ b/drivers/iio/chemical/sgp30.c
@@ -548,6 +548,9 @@ static int sgp_probe(struct i2c_client *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;
 }
-- 
2.25.1