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Date: Sun, 4 Sep 2016 03:01:42 +0200 From: Nicolai Stange <nicstange@...il.com> To: Thomas Gleixner <tglx@...utronix.de> Cc: John Stultz <john.stultz@...aro.org>, linux-kernel@...r.kernel.org, Nicolai Stange <nicstange@...il.com> Subject: [RFC v5 05/23] clocksource: h8300_timer8: don't reset rate in ->set_state_oneshot() With the upcoming NTP correction related rate adjustments to be implemented in the clockevents core, the latter needs to get informed about every rate change of a clockevent device made after its registration. Currently, h8300_timer8 violates this requirement in that it registers its clockevent device with the correct rate, but resets its ->mult and ->rate values in timer8_clock_event_start(), called from its ->set_state_oneshot() function. It seems like commit 4633f4cac85a ("clocksource/drivers/h8300: Cleanup startup and remove module code."), which introduced the rate initialization at registration, missed to remove the manual setting of ->mult and ->shift from timer8_clock_event_start(). Purge the setting of ->mult, ->shift, ->min_delta_ns and ->max_delta_ns from timer8_clock_event_start(). Signed-off-by: Nicolai Stange <nicstange@...il.com> --- Notes: Compile-only tested on ARCH=h8300. drivers/clocksource/h8300_timer8.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/clocksource/h8300_timer8.c b/drivers/clocksource/h8300_timer8.c index 546bb18..804c489 100644 --- a/drivers/clocksource/h8300_timer8.c +++ b/drivers/clocksource/h8300_timer8.c @@ -101,15 +101,7 @@ static inline struct timer8_priv *ced_to_priv(struct clock_event_device *ced) static void timer8_clock_event_start(struct timer8_priv *p, unsigned long delta) { - struct clock_event_device *ced = &p->ced; - timer8_start(p); - - ced->shift = 32; - ced->mult = div_sc(p->rate, NSEC_PER_SEC, ced->shift); - ced->max_delta_ns = clockevent_delta2ns(0xffff, ced); - ced->min_delta_ns = clockevent_delta2ns(0x0001, ced); - timer8_set_next(p, delta); } -- 2.9.3
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