From: Zhang Qilong <zhangqilong3@huawei.com>
Date: Mon, 23 Nov 2020 18:21:18 +0800
Subject: memory: mtk-smi: Fix PM usage counter unbalance in mtk_smi ops
Git-commit: a2d522ff0f5cc26915c4ccee9457fd4b4e1edc48
Patch-mainline: v5.12-rc1
References: bsc#1183325

pm_runtime_get_sync will increment pm usage counter
even it failed. Forgetting to putting operation will
result in reference leak here. We fix it by replacing
it with pm_runtime_resume_and_get to keep usage counter
balanced.

Fixes: 4f0a1a1ae3519 ("memory: mtk-smi: Invoke pm runtime_callback to enable clocks")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Link: https://lore.kernel.org/r/20201123102118.3866195-1-zhangqilong3@huawei.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Joerg Roedel <jroedel@suse.de>
---
 drivers/memory/mtk-smi.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/memory/mtk-smi.c
+++ b/drivers/memory/mtk-smi.c
@@ -127,7 +127,7 @@ static void mtk_smi_clk_disable(const st
 
 int mtk_smi_larb_get(struct device *larbdev)
 {
-	int ret = pm_runtime_get_sync(larbdev);
+	int ret = pm_runtime_resume_and_get(larbdev);
 
 	return (ret < 0) ? ret : 0;
 }
@@ -336,7 +336,7 @@ static int __maybe_unused mtk_smi_larb_r
 	int ret;
 
 	/* Power on smi-common. */
-	ret = pm_runtime_get_sync(larb->smi_common_dev);
+	ret = pm_runtime_resume_and_get(larb->smi_common_dev);
 	if (ret < 0) {
 		dev_err(dev, "Failed to pm get for smi-common(%d).\n", ret);
 		return ret;