diff options
Diffstat (limited to 'drivers/clocksource/timer-mediatek.c')
| -rw-r--r-- | drivers/clocksource/timer-mediatek.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/clocksource/timer-mediatek.c b/drivers/clocksource/timer-mediatek.c index ab63b95e414f..7bcb4a3f26fb 100644 --- a/drivers/clocksource/timer-mediatek.c +++ b/drivers/clocksource/timer-mediatek.c @@ -60,9 +60,9 @@ * SYST_CON_EN: Clock enable. Shall be set to * - Start timer countdown. * - Allow timeout ticks being updated. - * - Allow changing interrupt functions. + * - Allow changing interrupt status,like clear irq pending. * - * SYST_CON_IRQ_EN: Set to allow interrupt. + * SYST_CON_IRQ_EN: Set to enable interrupt. * * SYST_CON_IRQ_CLR: Set to clear interrupt. */ @@ -75,6 +75,7 @@ static void __iomem *gpt_sched_reg __read_mostly; static void mtk_syst_ack_irq(struct timer_of *to) { /* Clear and disable interrupt */ + writel(SYST_CON_EN, SYST_CON_REG(to)); writel(SYST_CON_IRQ_CLR | SYST_CON_EN, SYST_CON_REG(to)); } @@ -111,6 +112,9 @@ static int mtk_syst_clkevt_next_event(unsigned long ticks, static int mtk_syst_clkevt_shutdown(struct clock_event_device *clkevt) { + /* Clear any irq */ + mtk_syst_ack_irq(to_timer_of(clkevt)); + /* Disable timer */ writel(0, SYST_CON_REG(to_timer_of(clkevt))); |