mtd: rawnand: omap_elm: Fix runtime PM imbalance on error

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@zju.edu.cn>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20200522104008.28340-1-dinghao.liu@zju.edu.cn

diff --git a/drivers/mtd/nand/raw/omap_elm.c b/drivers/mtd/nand/raw/omap_elm.c
index 3fa0e2c..078b102 100644 (file)
--- a/drivers/mtd/nand/raw/omap_elm.c
+++ b/drivers/mtd/nand/raw/omap_elm.c
@@ -411,6 +411,7 @@ static int elm_probe(struct platform_device *pdev)
        pm_runtime_enable(&pdev->dev);
        if (pm_runtime_get_sync(&pdev->dev) < 0) {
                ret = -EINVAL;
+               pm_runtime_put_sync(&pdev->dev);
                pm_runtime_disable(&pdev->dev);
                dev_err(&pdev->dev, "can't enable clock\n");
                return ret;