linux-kernel - [PATCH 5.1 153/371] clocksource/drivers/tegra: Restore base address before cleanup

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Message-Id: <20190724191736.708663985@linuxfoundation.org>
Date:   Wed, 24 Jul 2019 21:18:25 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Dmitry Osipenko <digetx@...il.com>,
        Jon Hunter <jonathanh@...dia.com>,
        Thierry Reding <treding@...dia.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.1 153/371] clocksource/drivers/tegra: Restore base address before cleanup

[ Upstream commit fc9babc2574691d3bbf0428f007b22261fed55c6 ]

We're adjusting the timer's base for each per-CPU timer to point to the
actual start of the timer since device-tree defines a compound registers
range that includes all of the timers. In this case the original base
need to be restore before calling iounmap to unmap the proper address.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
Acked-by: Jon Hunter <jonathanh@...dia.com>
Acked-by: Thierry Reding <treding@...dia.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...aro.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clocksource/timer-tegra20.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/clocksource/timer-tegra20.c b/drivers/clocksource/timer-tegra20.c
index cc18bb135a17..84adfff59fb0 100644
--- a/drivers/clocksource/timer-tegra20.c
+++ b/drivers/clocksource/timer-tegra20.c
@@ -341,6 +341,8 @@ static int __init tegra_init_timer(struct device_node *np)
 			irq_dispose_mapping(cpu_to->clkevt.irq);
 		}
 	}
+
+	to->of_base.base = timer_reg_base;
 out:
 	timer_of_cleanup(to);
 	return ret;
-- 
2.20.1