linux-kernel - [PATCH] i2c: xiic: Fix pm_runtime_set_suspended() with runtime pm enabled

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Message-ID: <20240923034250.3008055-1-ruanjinjie@huawei.com>
Date: Mon, 23 Sep 2024 11:42:50 +0800
From: Jinjie Ruan <ruanjinjie@...wei.com>
To: <michal.simek@....com>, <andi.shyti@...nel.org>, <shubhraj@...inx.com>,
	<wsa@...nel.org>, <robh@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-i2c@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC: <ruanjinjie@...wei.com>
Subject: [PATCH] i2c: xiic: Fix pm_runtime_set_suspended() with runtime pm enabled

It is not valid to call pm_runtime_set_suspended() for devices
with runtime PM enabled because it returns -EAGAIN if it is enabled
already and working. So, call pm_runtime_disable() before to fix it.

Fixes: 36ecbcab84d0 ("i2c: xiic: Implement power management")
Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com>
---
 drivers/i2c/busses/i2c-xiic.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i2c/busses/i2c-xiic.c b/drivers/i2c/busses/i2c-xiic.c
index 4c89aad02451..1d68177241a6 100644
--- a/drivers/i2c/busses/i2c-xiic.c
+++ b/drivers/i2c/busses/i2c-xiic.c
@@ -1337,8 +1337,8 @@ static int xiic_i2c_probe(struct platform_device *pdev)
 	return 0;
 
 err_pm_disable:
-	pm_runtime_set_suspended(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
+	pm_runtime_set_suspended(&pdev->dev);
 
 	return ret;
 }
-- 
2.34.1