linux-kernel - [PATCH 2/2] Input: matrix_keypad: Improve a size determination in matrix_keypad

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Date:   Sat, 27 Jan 2018 13:54:23 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     linux-input@...r.kernel.org, David Rivshin <DRivshin@...worx.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/2] Input: matrix_keypad: Improve a size determination in
 matrix_keypad_probe()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 27 Jan 2018 13:43:16 +0100

Replace the specification of a data structure by a pointer dereference
as the parameter for the operator "sizeof" to make the corresponding size
determination a bit safer according to the Linux coding style convention.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/input/keyboard/matrix_keypad.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/input/keyboard/matrix_keypad.c b/drivers/input/keyboard/matrix_keypad.c
index 90238201a9cc..16206a8a5f07 100644
--- a/drivers/input/keyboard/matrix_keypad.c
+++ b/drivers/input/keyboard/matrix_keypad.c
@@ -487,7 +487,7 @@ static int matrix_keypad_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	keypad = kzalloc(sizeof(struct matrix_keypad), GFP_KERNEL);
+	keypad = kzalloc(sizeof(*keypad), GFP_KERNEL);
 	input_dev = input_allocate_device();
 	if (!keypad || !input_dev) {
 		err = -ENOMEM;
-- 
2.16.1