iio: pressure: zpa2326: handle pm_runtime_get_sync failure

commit d88de040e1df38414fc1e4380be9d0e997ab4d58 upstream.

Calling pm_runtime_get_sync increments the counter even in case of
failure, causing incorrect ref count. Call pm_runtime_put if
pm_runtime_get_sync fails.

Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Fixes: 03b262f2bbf4 ("iio:pressure: initial zpa2326 barometer support")
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index cc002b958f7e8a12351aa6e44bfbf2c96536fa8c..401e230ab72e0401a5901f66179c0e555120cec4 100644 (file)
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -676,8 +676,10 @@ static int zpa2326_resume(const struct iio_dev *indio_dev)
        int err;
 
        err = pm_runtime_get_sync(indio_dev->dev.parent);
-       if (err < 0)
+       if (err < 0) {
+               pm_runtime_put(indio_dev->dev.parent);
                return err;
+       }
 
        if (err > 0) {
                /*