linux-kernel - [PATCH] clocksource: clint: Avoid remove __iomem in get_cycles

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Date:   Mon, 21 Dec 2020 21:32:30 -0800
From:   Palmer Dabbelt <palmer@...belt.com>
To:         linux-riscv@...ts.infradead.org
Cc:     daniel.lezcano@...aro.org, tglx@...utronix.de,
        linux-kernel@...r.kernel.org, kernel-team@...roid.com,
        Palmer Dabbelt <palmerdabbelt@...gle.com>,
        kernel test robot <lkp@...el.com>
Subject: [PATCH] clocksource: clint: Avoid remove __iomem in get_cycles_hi()

From: Palmer Dabbelt <palmerdabbelt@...gle.com>

This cast loses the __iomem qualifier from clint_timer_val, which
triggers an sparse warning.

Reported-by: kernel test robot <lkp@...el.com>
Signed-off-by: Palmer Dabbelt <palmerdabbelt@...gle.com>
---
 drivers/clocksource/timer-clint.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clocksource/timer-clint.c b/drivers/clocksource/timer-clint.c
index 6cfe2ab73eb0..83a8b38d46f6 100644
--- a/drivers/clocksource/timer-clint.c
+++ b/drivers/clocksource/timer-clint.c
@@ -63,7 +63,7 @@ static struct riscv_ipi_ops clint_ipi_ops = {
 #define clint_get_cycles()	readq_relaxed(clint_timer_val)
 #else
 #define clint_get_cycles()	readl_relaxed(clint_timer_val)
-#define clint_get_cycles_hi()	readl_relaxed(((u32 *)clint_timer_val) + 1)
+#define clint_get_cycles_hi()	readl_relaxed(((u32 __iomem *)clint_timer_val) + 1)
 #endif
 
 #ifdef CONFIG_64BIT
-- 
2.29.2.729.g45daf8777d-goog