linux-kernel - [PATCH] surface: surface3-wmi: Simplify resource management

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Date:   Sun, 30 Jan 2022 09:36:54 +0100
From:   Christophe JAILLET <christophe.jaillet@...adoo.fr>
To:     Hans de Goede <hdegoede@...hat.com>,
        Mark Gross <markgross@...nel.org>,
        Maximilian Luz <luzmaximilian@...il.com>,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Cc:     linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
        Christophe JAILLET <christophe.jaillet@...adoo.fr>,
        platform-driver-x86@...r.kernel.org
Subject: [PATCH] surface: surface3-wmi: Simplify resource management

's3_wmi.input' is a managed resource, so there should be no need to free it
explicitly.

Moreover, 's3_wmi' is a global variable. 's3_wmi.input' should be NULL
when this error handling path is executed, because it has not been
assigned yet.

All this is puzzling. So simplify it and remove a few lines of code to have
it be more straightforward.

Fixes: 3dda3b3798f9 ("platform/x86: Add custom surface3 platform device for controlling LID")
Signed-off-by: Christophe JAILLET <christophe.jaillet@...adoo.fr>
---
Compile tested only
---
 drivers/platform/surface/surface3-wmi.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/platform/surface/surface3-wmi.c b/drivers/platform/surface/surface3-wmi.c
index 09ac9cfc40d8..b9a4b2d81f4b 100644
--- a/drivers/platform/surface/surface3-wmi.c
+++ b/drivers/platform/surface/surface3-wmi.c
@@ -190,14 +190,11 @@ static int s3_wmi_create_and_register_input(struct platform_device *pdev)
 
 	error = input_register_device(input);
 	if (error)
-		goto out_err;
+		return error;
 
 	s3_wmi.input = input;
 
 	return 0;
- out_err:
-	input_free_device(s3_wmi.input);
-	return error;
 }
 
 static int __init s3_wmi_probe(struct platform_device *pdev)
-- 
2.32.0