linux-kernel - [PATCH] clk: renesas: mstp: Delete an unnecessary kfree() call in cpg_mstp_clocks

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Date:   Tue, 27 Aug 2019 15:27:30 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     linux-clk@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org
Subject: [PATCH] clk: renesas: mstp: Delete an unnecessary kfree() call in
 cpg_mstp_clocks_init()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 27 Aug 2019 15:22:12 +0200

A null pointer would be passed to a call of the function “kfree”
directly after a call of the function “kzalloc” failed at one place.
Remove this superfluous function call.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 drivers/clk/renesas/clk-mstp.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/clk/renesas/clk-mstp.c b/drivers/clk/renesas/clk-mstp.c
index 2db9093546c6..09f8894bb91b 100644
--- a/drivers/clk/renesas/clk-mstp.c
+++ b/drivers/clk/renesas/clk-mstp.c
@@ -189,10 +189,8 @@ static void __init cpg_mstp_clocks_init(struct device_node *np)
 	unsigned int i;

 	group = kzalloc(struct_size(group, clks, MSTP_MAX_CLOCKS), GFP_KERNEL);
-	if (group == NULL) {
-		kfree(group);
+	if (!group)
 		return;
-	}

 	clks = group->clks;
 	spin_lock_init(&group->lock);
--
2.23.0