Messages in this thread Patch in this message | | | From | Marc Kleine-Budde <> | Subject | RFC: [PATCH] clocksource: tcb: fix min_delta calculation | Date | Tue, 23 Apr 2013 15:08:44 +0200 |
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The commit
77cc982 clocksource: use clockevents_config_and_register() where possible
switches from manually calculating min_delta_ns (and others) and clockevents_register_device() to automatic calculation via clockevents_config_and_register(). During this conversation the "+ 1" in
min_delta_ns = clockevent_delta2ns(1, &clkevt.clkevt) + 1;
was lost. This leads to problems with schedule_delayed_work() with a delay of "1". Resulting in the work not scheduled in time.
This patch fixes the problem by increasing the min_delta to "2" ticks.
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> --- drivers/clocksource/tcb_clksrc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/clocksource/tcb_clksrc.c b/drivers/clocksource/tcb_clksrc.c index 8a61872..7cf6dc7 100644 --- a/drivers/clocksource/tcb_clksrc.c +++ b/drivers/clocksource/tcb_clksrc.c @@ -197,7 +197,7 @@ static void __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx) clkevt.clkevt.cpumask = cpumask_of(0); - clockevents_config_and_register(&clkevt.clkevt, 32768, 1, 0xffff); + clockevents_config_and_register(&clkevt.clkevt, 32768, 2, 0xffff); setup_irq(irq, &tc_irqaction); } -- 1.8.2.rc2
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