linux-kernel - [RFC PATCH 3/3] clocksource: mtk_timer: fix memleak in mtk_timer

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Message-Id: <1441336900-15095-3-git-send-email-alexey.klimov@linaro.org>
Date:	Fri,  4 Sep 2015 06:21:40 +0300
From:	Alexey Klimov <alexey.klimov@...aro.org>
To:	daniel.lezcano@...aro.org, linux-mediatek@...ts.infradead.org,
	matthias.bgg@...il.com
Cc:	yingjoe.chen@...iatek.com, tglx@...utronix.de,
	linux-kernel@...r.kernel.org, klimov.linux@...il.com,
	Alexey Klimov <alexey.klimov@...aro.org>
Subject: [RFC PATCH 3/3] clocksource: mtk_timer: fix memleak in mtk_timer_init()

Add error path to clear evt struct allocated by kzalloc()
in the beginning of function mtk_timer_init().

Signed-off-by: Alexey Klimov <alexey.klimov@...aro.org>
---
 drivers/clocksource/mtk_timer.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/clocksource/mtk_timer.c b/drivers/clocksource/mtk_timer.c
index fbaacbf..9c5a2cc 100644
--- a/drivers/clocksource/mtk_timer.c
+++ b/drivers/clocksource/mtk_timer.c
@@ -201,7 +201,7 @@ static void __init mtk_timer_init(struct device_node *node)
 	evt->gpt_base = of_io_request_and_map(node, 0, "mtk-timer");
 	if (IS_ERR(evt->gpt_base)) {
 		pr_err("Can't get resource\n");
-		return;
+		goto err_kzalloc;
 	}
 
 	evt->dev.irq = irq_of_parse_and_map(node, 0);
@@ -256,5 +256,7 @@ err_mem:
 	iounmap(evt->gpt_base);
 	of_address_to_resource(node, 0, &res);
 	release_mem_region(res.start, resource_size(&res));
+err_kzalloc:
+	kfree(evt);
 }
 CLOCKSOURCE_OF_DECLARE(mtk_mt6577, "mediatek,mt6577-timer", mtk_timer_init);
-- 
2.1.4

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