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memory: mtk-smi: Fix PM usage counter unbalance in mtk_smi ops 

[ Upstream commit a2d522ff0f5cc26915c4ccee9457fd4b4e1edc48 ]

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: 4f0a1a1ae3 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhang Qilong 2020-11-23 18:21:18 +08:00 committed by Greg Kroah-Hartman
parent 9ab4364ecd
commit ab9de93d12
1 changed files with 2 additions and 2 deletions
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4
drivers/memory/mtk-smi.c
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@ -127,7 +127,7 @@ static void mtk_smi_clk_disable(const struct mtk_smi *smi)
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_resume(struct device *dev)
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;