spi: tegra20-sflash: fix reference leak in tegra_sflash_resume

[ Upstream commit 3482e797ab688da6703fe18d8bad52f94199f4f2 ]

pm_runtime_get_sync will increment pm usage counter even it
failed. Forgetting to pm_runtime_put_noidle will result in
reference leak in tegra_sflash_resume, so we should fix it.

Fixes: 8528547bcc336 ("spi: tegra: add spi driver for sflash controller")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201103141323.5841-1-zhangqilong3@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/spi/spi-tegra20-sflash.c b/drivers/spi/spi-tegra20-sflash.c
index b6558bb6f9dfc1efb0084a28ad95280ab8d527fe..4b9541e1726a54cfc2495991018c9dffc0c4572c 100644 (file)
--- a/drivers/spi/spi-tegra20-sflash.c
+++ b/drivers/spi/spi-tegra20-sflash.c
@@ -564,6 +564,7 @@ static int tegra_sflash_resume(struct device *dev)
 
        ret = pm_runtime_get_sync(dev);
        if (ret < 0) {
+               pm_runtime_put_noidle(dev);
                dev_err(dev, "pm runtime failed, e = %d\n", ret);
                return ret;
        }