From: Xiubo Li <Li.Xiubo@freescale.com>
To: <daniel.lezcano@linaro.org>, <tglx@linutronix.de>,
<shawn.guo@linaro.org>
Cc: <linux-kernel@vger.kernel.org>, Xiubo Li <Li.Xiubo@freescale.com>
Subject: [PATCH] clocksource: vf_pit_timer: fix pit_read_sched_clock
Date: Tue, 15 Apr 2014 18:48:49 +0800 [thread overview]
Message-ID: <1397558929-12123-1-git-send-email-Li.Xiubo@freescale.com> (raw)
The pit_read_sched_clock mean to getting the current counter value,
and the vf pit timer is a down count timer, this should return
the counter value or the cycles elapsed.
Signed-off-by: Xiubo Li <Li.Xiubo@freescale.com>
---
drivers/clocksource/vf_pit_timer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clocksource/vf_pit_timer.c b/drivers/clocksource/vf_pit_timer.c
index 02821b0..a918bc4 100644
--- a/drivers/clocksource/vf_pit_timer.c
+++ b/drivers/clocksource/vf_pit_timer.c
@@ -54,7 +54,7 @@ static inline void pit_irq_acknowledge(void)
static u64 pit_read_sched_clock(void)
{
- return __raw_readl(clksrc_base + PITCVAL);
+ return ~__raw_readl(clksrc_base + PITCVAL);
}
static int __init pit_clocksource_init(unsigned long rate)
--
1.8.4
next reply other threads:[~2014-04-15 11:31 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-04-15 10:48 Xiubo Li [this message]
2014-04-15 12:35 ` Daniel Lezcano
2014-04-15 21:53 ` Thomas Gleixner
2014-04-16 0:51 ` Li.Xiubo
2014-04-16 0:33 ` Li.Xiubo
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1397558929-12123-1-git-send-email-Li.Xiubo@freescale.com \
--to=li.xiubo@freescale.com \
--cc=daniel.lezcano@linaro.org \
--cc=linux-kernel@vger.kernel.org \
--cc=shawn.guo@linaro.org \
--cc=tglx@linutronix.de \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®