diff options
Diffstat (limited to 'drivers/clocksource/sh_cmt.c')
| -rw-r--r-- | drivers/clocksource/sh_cmt.c | 30 |
1 files changed, 18 insertions, 12 deletions
diff --git a/drivers/clocksource/sh_cmt.c b/drivers/clocksource/sh_cmt.c index d7ed99f0001f..dd0956ad969c 100644 --- a/drivers/clocksource/sh_cmt.c +++ b/drivers/clocksource/sh_cmt.c @@ -579,7 +579,8 @@ static int sh_cmt_start(struct sh_cmt_channel *ch, unsigned long flag) ch->flags |= flag; /* setup timeout if no clockevent */ - if ((flag == FLAG_CLOCKSOURCE) && (!(ch->flags & FLAG_CLOCKEVENT))) + if (ch->cmt->num_channels == 1 && + flag == FLAG_CLOCKSOURCE && (!(ch->flags & FLAG_CLOCKEVENT))) __sh_cmt_set_next(ch, ch->max_match_value); out: raw_spin_unlock_irqrestore(&ch->lock, flags); @@ -621,20 +622,25 @@ static struct sh_cmt_channel *cs_to_sh_cmt(struct clocksource *cs) static u64 sh_cmt_clocksource_read(struct clocksource *cs) { struct sh_cmt_channel *ch = cs_to_sh_cmt(cs); - unsigned long flags; u32 has_wrapped; - u64 value; - u32 raw; - raw_spin_lock_irqsave(&ch->lock, flags); - value = ch->total_cycles; - raw = sh_cmt_get_counter(ch, &has_wrapped); + if (ch->cmt->num_channels == 1) { + unsigned long flags; + u64 value; + u32 raw; - if (unlikely(has_wrapped)) - raw += ch->match_value + 1; - raw_spin_unlock_irqrestore(&ch->lock, flags); + raw_spin_lock_irqsave(&ch->lock, flags); + value = ch->total_cycles; + raw = sh_cmt_get_counter(ch, &has_wrapped); + + if (unlikely(has_wrapped)) + raw += ch->match_value + 1; + raw_spin_unlock_irqrestore(&ch->lock, flags); + + return value + raw; + } - return value + raw; + return sh_cmt_get_counter(ch, &has_wrapped); } static int sh_cmt_clocksource_enable(struct clocksource *cs) @@ -697,7 +703,7 @@ static int sh_cmt_register_clocksource(struct sh_cmt_channel *ch, cs->disable = sh_cmt_clocksource_disable; cs->suspend = sh_cmt_clocksource_suspend; cs->resume = sh_cmt_clocksource_resume; - cs->mask = CLOCKSOURCE_MASK(sizeof(u64) * 8); + cs->mask = CLOCKSOURCE_MASK(ch->cmt->info->width); cs->flags = CLOCK_SOURCE_IS_CONTINUOUS; dev_info(&ch->cmt->pdev->dev, "ch%u: used as clock source\n", |