Currently, reset_control_put() just returns for error pointer,
but not for NULL pointer.  This is not reasonable.

Passing NULL pointer should be allowed as well to make failure path
handling easier.

Signed-off-by: Masahiro Yamada <yamada.masah...@socionext.com>
---

 drivers/reset/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/reset/core.c b/drivers/reset/core.c
index 181b05d..7bb16d1 100644
--- a/drivers/reset/core.c
+++ b/drivers/reset/core.c
@@ -288,7 +288,7 @@ EXPORT_SYMBOL_GPL(reset_control_get);
 
 void reset_control_put(struct reset_control *rstc)
 {
-       if (IS_ERR(rstc))
+       if (IS_ERR_OR_NULL(rstc))
                return;
 
        module_put(rstc->rcdev->owner);
-- 
1.9.1

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