[PATCH] iio: light: ltrf216a: fix runtime PM reference leak in error path

[Vidhu Sarwal]

ltrf216a_get_lux() acquires a runtime PM reference by calling
ltrf216a_set_power_state(data, true). However, if
ltrf216a_read_data() fails, the function returns immediately without
dropping the reference.

This leaves the runtime PM usage count unbalanced, preventing the device
from autosuspending after a failed read.

Fix this by releasing the runtime PM reference before returning from the
error path.

Fixes: 83f0bcd40d5c ("iio: light: Add support for ltrf216a sensor")
Signed-off-by: Vidhu Sarwal <vidhu.linux@xxxxxxxxx>
---
 drivers/iio/light/ltrf216a.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c
index 3f34ddc911b4..3ec239eb5831 100644
--- a/drivers/iio/light/ltrf216a.c
+++ b/drivers/iio/light/ltrf216a.c
@@ -247,8 +247,10 @@ static int ltrf216a_get_lux(struct ltrf216a_data *data)
 		return ret;
 
 	greendata = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0);
-	if (greendata < 0)
+	if (greendata < 0) {
+		ltrf216a_set_power_state(data, false);
 		return greendata;
+	}
 
 	ltrf216a_set_power_state(data, false);
 

base-commit: a13c140cc289c0b7b3770bce5b3ad42ab35074aa
-- 
2.53.0