linux-kernel - [PATCH] clocksource: timer-digicolor: Unmap region obtained by of

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Date:   Thu, 22 Sep 2016 19:51:13 +0530
From:   Arvind Yadav <arvind.yadav.cs@...il.com>
To:     daniel.lezcano@...aro.org, tglx@...utronix.de, baruch@...s.co.il
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: [PATCH] clocksource: timer-digicolor: Unmap region obtained by of_iomap

Free memory mapping, if digicolor_timer_init is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@...il.com>
---
 drivers/clocksource/timer-digicolor.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/clocksource/timer-digicolor.c b/drivers/clocksource/timer-digicolor.c
index 10318cc..e6e5e6a 100644
--- a/drivers/clocksource/timer-digicolor.c
+++ b/drivers/clocksource/timer-digicolor.c
@@ -167,12 +167,14 @@ static int __init digicolor_timer_init(struct device_node *node)
 	irq = irq_of_parse_and_map(node, dc_timer_dev.timer_id);
 	if (irq <= 0) {
 		pr_err("Can't parse IRQ");
+		iounmap(dc_timer_dev.base);
 		return -EINVAL;
 	}
 
 	clk = of_clk_get(node, 0);
 	if (IS_ERR(clk)) {
 		pr_err("Can't get timer clock");
+		iounmap(dc_timer_dev.base);
 		return PTR_ERR(clk);
 	}
 	clk_prepare_enable(clk);
@@ -192,6 +194,7 @@ static int __init digicolor_timer_init(struct device_node *node)
 			  &dc_timer_dev.ce);
 	if (ret) {
 		pr_warn("request of timer irq %d failed (%d)\n", irq, ret);
+		iounmap(dc_timer_dev.base);
 		return ret;
 	}
 
-- 
2.7.4