linux-kernel - [PATCH] Input: omap-keypad - fix runtime pm imbalance on error

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Message-Id: <20200520133432.19738-1-dinghao.liu@zju.edu.cn>
Date:   Wed, 20 May 2020 21:34:29 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Richard Fontana <rfontana@...hat.com>,
        Allison Randal <allison@...utok.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] Input: omap-keypad - fix runtime pm imbalance on error

pm_runtime_get_sync() increments the runtime PM usage counter even
the call returns an error code. Thus a pairing decrement is needed
on the error handling path to keep the counter balanced.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/input/keyboard/omap4-keypad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/omap4-keypad.c b/drivers/input/keyboard/omap4-keypad.c
index 94c94d7f5155..d13d81c796d2 100644
--- a/drivers/input/keyboard/omap4-keypad.c
+++ b/drivers/input/keyboard/omap4-keypad.c
@@ -371,8 +371,8 @@ static int omap4_keypad_probe(struct platform_device *pdev)
 err_free_input:
 	input_free_device(input_dev);
 err_pm_put_sync:
-	pm_runtime_put_sync(&pdev->dev);
 err_unmap:
+	pm_runtime_put_sync(&pdev->dev);
 	iounmap(keypad_data->base);
 err_release_mem:
 	release_mem_region(res->start, resource_size(res));
-- 
2.17.1