From: Zhang Qilong zhangqilong3@huawei.com
[ 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: 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 Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/memory/mtk-smi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/memory/mtk-smi.c b/drivers/memory/mtk-smi.c index a113e811faabe..da1ce7fd4cf5c 100644 --- a/drivers/memory/mtk-smi.c +++ b/drivers/memory/mtk-smi.c @@ -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;