mtd: rawnand: gpmi: don't leak PM reference in error path

commit 9161f365c91614e5a3f5c6dcc44c3b1b33bc59c0 upstream.

If gpmi_nfc_apply_timings() fails, the PM runtime usage counter must be
dropped.

Reported-by: Pavel Machek <pavel@denx.de>
Fixes: f53d4c109a66 ("mtd: rawnand: gpmi: Add ERR007117 protection for nfc_apply_timings")
Signed-off-by: Christian Eggers <ceggers@arri.de>
Cc: stable@vger.kernel.org
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220125081619.6286-1-ceggers@arri.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
index 6e9f7d8..668d69f 100644 (file)
--- a/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
+++ b/drivers/mtd/nand/raw/gpmi-nand/gpmi-nand.c
@@ -2293,7 +2293,7 @@ static int gpmi_nfc_exec_op(struct nand_chip *chip,
                this->hw.must_apply_timings = false;
                ret = gpmi_nfc_apply_timings(this);
                if (ret)
-                       return ret;
+                       goto out_pm;
        }
 
        dev_dbg(this->dev, "%s: %d instructions\n", __func__, op->ninstrs);
@@ -2422,6 +2422,7 @@ unmap:
 
        this->bch = false;
 
+out_pm:
        pm_runtime_mark_last_busy(this->dev);
        pm_runtime_put_autosuspend(this->dev);