linux-kernel - [PATCH AUTOSEL 5.2 172/249] clocksource/drivers/tegra: Restore base address before cleanup

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Message-Id: <20190715134655.4076-172-sashal@kernel.org>
Date:   Mon, 15 Jul 2019 09:45:37 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     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>, linux-tegra@...r.kernel.org
Subject: [PATCH AUTOSEL 5.2 172/249] clocksource/drivers/tegra: Restore base address before cleanup

From: Dmitry Osipenko <digetx@...il.com>

[ 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 fe5cc0963ac9..462be34b41c4 100644
--- a/drivers/clocksource/timer-tegra20.c
+++ b/drivers/clocksource/timer-tegra20.c
@@ -319,6 +319,8 @@ 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