[PATCH] reset: fix refcount leak in reset_control_bulk_assert()

[WenTao Liang]

When reset_control_bulk_assert() asserts a batch of reset controls,
it calls reset
Fixes: 0b52297f2288 ("reset: Add support for shared reset controls")
Signed-off-by: WenTao Liang <vulab@xxxxxxxxxxx>
---
 drivers/reset/core.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index 38e189d04d09..daf9201bc105 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -516,8 +516,15 @@ int reset_control_assert(struct reset_control *rstc)
 		if (WARN_ON(atomic_read(&rstc->deassert_count) == 0))
 			return -EINVAL;
 
-		if (atomic_dec_return(&rstc->deassert_count) != 0)
+		if (atomic_dec_return(&rstc->deassert_count) != 0) {
+			int err = rcdev->ops->assert(rcdev, rstc->id);
+
+			if (err) {
+				atomic_inc(&rstc->deassert_count);
+				return err;
+			}
 			return 0;
+		}
 
 		/*
 		 * Shared reset controls allow the reset line to be in any state
-- 
2.50.1 (Apple Git-155)