linux-kernel - [PATCH v2] mfd: arizona: Use pm_runtime_resume_and

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Date:   Thu,  5 Jan 2023 14:10:55 +0800
From:   Liang He <windhl@....com>
To:     lee@...nel.org, ckeepax@...nsource.cirrus.com,
        patches@...nsource.cirrus.com, windhl@....com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH v2] mfd: arizona: Use pm_runtime_resume_and_get() to prevent refcnt leak

In arizona_clk32k_enable(), we should use pm_runtime_resume_and_get()
as pm_runtime_get_sync() will increase the refcnt even when it
returns an error.

Signed-off-by: Liang He <windhl@....com>
---
 changelog:
 v1: add missing pm_runtime_put_sync()
 v2: use pm_runtime_resume_and_get()

 drivers/mfd/arizona-core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/mfd/arizona-core.c b/drivers/mfd/arizona-core.c
index cbf1dd90b70d..b1c53e040771 100644
--- a/drivers/mfd/arizona-core.c
+++ b/drivers/mfd/arizona-core.c
@@ -45,7 +45,7 @@ int arizona_clk32k_enable(struct arizona *arizona)
 	if (arizona->clk32k_ref == 1) {
 		switch (arizona->pdata.clk32k_src) {
 		case ARIZONA_32KZ_MCLK1:
-			ret = pm_runtime_get_sync(arizona->dev);
+			ret = pm_runtime_resume_and_get(arizona->dev);
 			if (ret != 0)
 				goto err_ref;
 			ret = clk_prepare_enable(arizona->mclk[ARIZONA_MCLK1]);
-- 
2.25.1