linux-kernel - [PATCH 2/2] platform/x86/thinkpad_acpi: Improve a size determination in tpacpi_new

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Message-ID: <36da9194-4254-91ef-5b82-ab150801b911@users.sourceforge.net>
Date:   Mon, 18 Dec 2017 22:30:05 +0100
From:   SF Markus Elfring <elfring@...rs.sourceforge.net>
To:     ibm-acpi-devel@...ts.sourceforge.net,
        platform-driver-x86@...r.kernel.org,
        Andy Shevchenko <andy@...radead.org>,
        Darren Hart <dvhart@...radead.org>,
        Henrique de Moraes Holschuh <ibm-acpi@....eng.br>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH 2/2] platform/x86/thinkpad_acpi: Improve a size determination
 in tpacpi_new_rfkill()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 18 Dec 2017 22:13:53 +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/platform/x86/thinkpad_acpi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/platform/x86/thinkpad_acpi.c b/drivers/platform/x86/thinkpad_acpi.c
index 729144925880..40b7a1b9a019 100644
--- a/drivers/platform/x86/thinkpad_acpi.c
+++ b/drivers/platform/x86/thinkpad_acpi.c
@@ -1258,7 +1258,7 @@ static int __init tpacpi_new_rfkill(const enum tpacpi_rfk_id id,
 
 	BUG_ON(id >= TPACPI_RFK_SW_MAX || tpacpi_rfkill_switches[id]);
 
-	atp_rfk = kzalloc(sizeof(struct tpacpi_rfk), GFP_KERNEL);
+	atp_rfk = kzalloc(sizeof(*atp_rfk), GFP_KERNEL);
 	if (atp_rfk)
 		atp_rfk->rfkill = rfkill_alloc(name,
 						&tpacpi_pdev->dev,
-- 
2.15.1