[PATCH 5.10 173/491] iio: light: bh1780: fix PM runtime leak on error path

Greg Kroah-Hartman
2026-04-13T16:50:08Z

From: Antoniu Miclaus <antoniu.miclaus@analog.com>

[ Upstream commit dd72e6c3cdea05cad24e99710939086f7a113fb5 ]

Move pm_runtime_put_autosuspend() before the error check to ensure
the PM runtime reference count is always decremented after
pm_runtime_get_sync(), regardless of whether the read operation
succeeds or fails.

Fixes: 1f0477f18306 ("iio: light: new driver for the ROHM BH1780")
Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
[ moved both pm_runtime_mark_last_busy() and pm_runtime_put_autosuspend() before the error check instead of just pm_runtime_put_autosuspend() ]
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/iio/light/bh1780.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/iio/light/bh1780.c
+++ b/drivers/iio/light/bh1780.c
@@ -109,10 +109,10 @@ static int bh1780_read_raw(struct iio_de
case IIO_LIGHT:
pm_runtime_get_sync(&bh1780->client->dev);
value = bh1780_read_word(bh1780, BH1780_REG_DLOW);
- if (value < 0)
- return value;
pm_runtime_mark_last_busy(&bh1780->client->dev);
pm_runtime_put_autosuspend(&bh1780->client->dev);
+ if (value < 0)
+ return value;
*val = value;

return IIO_VAL_INT;