linux-kernel - [PATCH 5/9] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1479922177-20136-5-git-send-email-al.kochet@gmail.com>
Date:   Wed, 23 Nov 2016 20:29:33 +0300
From:   Alexander Kochetkov <al.kochet@...il.com>
To:     daniel.lezcano@...aro.org, tglx@...utronix.de, heiko@...ech.de,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org
Cc:     Alexander Kochetkov <al.kochet@...il.com>
Subject: [PATCH 5/9] clocksource/drivers/rockchip_timer: implement loading 64bit value into timer

Signed-off-by: Alexander Kochetkov <al.kochet@...il.com>
---
 drivers/clocksource/rockchip_timer.c |   10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/clocksource/rockchip_timer.c b/drivers/clocksource/rockchip_timer.c
index 3b530f9..f4c26be 100644
--- a/drivers/clocksource/rockchip_timer.c
+++ b/drivers/clocksource/rockchip_timer.c
@@ -63,11 +63,13 @@ static inline void rk_timer_enable(struct rk_timer *timer, u32 flags)
 	writel_relaxed(TIMER_ENABLE | flags, timer->ctrl);
 }
 
-static void rk_timer_update_counter(unsigned long cycles,
-				    struct rk_timer *timer)
+static void rk_timer_update_counter(u64 cycles, struct rk_timer *timer)
 {
-	writel_relaxed(cycles, timer->base + TIMER_LOAD_COUNT0);
-	writel_relaxed(0, timer->base + TIMER_LOAD_COUNT1);
+	u32 lower = cycles & 0xFFFFFFFF;
+	u32 upper = (cycles >> 32) & 0xFFFFFFFF;
+
+	writel_relaxed(lower, timer->base + TIMER_LOAD_COUNT0);
+	writel_relaxed(upper, timer->base + TIMER_LOAD_COUNT1);
 }
 
 static void rk_timer_interrupt_clear(struct rk_timer *timer)
-- 
1.7.9.5