linux-kernel - [PATCH 3/4] clocksource/drivers/arm_arch_timer: Map frame with of_io_request_and

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Message-Id: <1479807866-6957-3-git-send-email-daniel.lezcano@linaro.org>
Date:   Tue, 22 Nov 2016 10:44:23 +0100
From:   Daniel Lezcano <daniel.lezcano@...aro.org>
To:     tglx@...utronix.de
Cc:     linux-kernel@...r.kernel.org, Stephen Boyd <sboyd@...eaurora.org>,
        Marc Zyngier <marc.zyngier@....com>,
        Mark Rutland <mark.rutland@....com>,
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM ARCHITECTED
        TIMER DRIVER)
Subject: [PATCH 3/4] clocksource/drivers/arm_arch_timer: Map frame with of_io_request_and_map()

From: Stephen Boyd <sboyd@...eaurora.org>

Let's use the of_io_request_and_map() API so that the frame
region is protected and shows up in /proc/iomem.

Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Acked-by: Marc Zyngier <marc.zyngier@....com>
---
 drivers/clocksource/arm_arch_timer.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
index a2503db..02fef68 100644
--- a/drivers/clocksource/arm_arch_timer.c
+++ b/drivers/clocksource/arm_arch_timer.c
@@ -971,8 +971,9 @@ static int __init arch_timer_mem_init(struct device_node *np)
 	}
 
 	ret= -ENXIO;
-	base = arch_counter_base = of_iomap(best_frame, 0);
-	if (!base) {
+	base = arch_counter_base = of_io_request_and_map(best_frame, 0,
+							 "arch_mem_timer");
+	if (IS_ERR(base)) {
 		pr_err("arch_timer: Can't map frame's registers\n");
 		goto out;
 	}
-- 
2.7.4