linux-kernel - [PATCH] i2c-HID: Delete unnecessary checks before the function call "gpiod

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Date:	Wed, 8 Jul 2015 22:30:44 +0200
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Jiri Kosina <jkosina@...e.cz>, linux-input@...r.kernel.org
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH] i2c-HID: Delete unnecessary checks before the function call
 "gpiod_put"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Wed, 8 Jul 2015 22:12:25 +0200

The gpiod_put() function performs also input parameter validation
by forwarding its single input pointer to the gpiod_free() function.
Thus the test around the calls is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/hid/i2c-hid/i2c-hid.c | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c
index f77469d..09ff4e7 100644
--- a/drivers/hid/i2c-hid/i2c-hid.c
+++ b/drivers/hid/i2c-hid/i2c-hid.c
@@ -1048,9 +1048,7 @@ err_pm:
 	pm_runtime_disable(&client->dev);
 
 err:
-	if (ihid->desc)
-		gpiod_put(ihid->desc);
-
+	gpiod_put(ihid->desc);
 	i2c_hid_free_buffers(ihid);
 	kfree(ihid);
 	return ret;
@@ -1074,9 +1072,7 @@ static int i2c_hid_remove(struct i2c_client *client)
 	if (ihid->bufsize)
 		i2c_hid_free_buffers(ihid);
 
-	if (ihid->desc)
-		gpiod_put(ihid->desc);
-
+	gpiod_put(ihid->desc);
 	kfree(ihid);
 
 	acpi_dev_remove_driver_gpios(ACPI_COMPANION(&client->dev));
-- 
2.4.5

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