[PATCH AUTOSEL 5.4 302/330] mtd: rawnand: gpmi: Fix runtime PM imbalance on error

[Sasha Levin]

From: Dinghao Liu <dinghao.liu@xxxxxxxxxx>

[ Upstream commit 550e68ea36a6671a96576c0531685ce6e6c0d19d ]

pm_runtime_get_sync() increments the runtime PM usage counter even
when it returns an error code. Thus a pairing decrement is needed on
the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@xxxxxxxxxx>
Signed-off-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Link: https://lore.kernel.org/linux-mtd/20200522095139.19653-1-dinghao.liu@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index b9d5d55a5edb9..ef89947ee3191 100644
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -540,8 +540,10 @@ static int bch_set_geometry(struct gpmi_nand_data *this)
 		return ret;
 
 	ret = pm_runtime_get_sync(this->dev);
-	if (ret < 0)
+	if (ret < 0) {
+		pm_runtime_put_autosuspend(this->dev);
 		return ret;
+	}
 
 	/*
 	* Due to erratum #2847 of the MX23, the BCH cannot be soft reset on this
-- 
2.25.1