AuxXxilium/linux_dsm_epyc7002
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Merge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull two timer fixes from Thomas Gleixner:
 "Two small fixlets for ARM SoC clocksource drivers:

   - avoid calling functions which might sleep from interrupt [disabled]
     context in tcb_clksrc used on Atmel SoCs

   - use irq_force_affinity() to pin the per cpu timer interrupt on a
     not yet online cpu in the SiRFprimaII driver"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  clocksource: tcb_clksrc: Make tc_mode interrupt safe
  clocksource: marco: Fix the affinity set for local timer of CPU1
This commit is contained in:
Linus Torvalds 2014-05-27 15:58:20 -07:00
commit aa699a1d84
2 changed files with 5 additions and 5 deletions
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8
drivers/clocksource/tcb_clksrc.c
View File

@ -100,7 +100,7 @@ static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
|| tcd->clkevt.mode == CLOCK_EVT_MODE_ONESHOT) {
__raw_writel(0xff, regs + ATMEL_TC_REG(2, IDR));
__raw_writel(ATMEL_TC_CLKDIS, regs + ATMEL_TC_REG(2, CCR));
clk_disable_unprepare(tcd->clk);
clk_disable(tcd->clk);
}
switch (m) {
@ -109,7 +109,7 @@ static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
* of oneshot, we get lower overhead and improved accuracy.
*/
case CLOCK_EVT_MODE_PERIODIC:
clk_prepare_enable(tcd->clk);
clk_enable(tcd->clk);
/* slow clock, count up to RC, then irq and restart */
__raw_writel(timer_clock
@ -126,7 +126,7 @@ static void tc_mode(enum clock_event_mode m, struct clock_event_device *d)
break;
case CLOCK_EVT_MODE_ONESHOT:
clk_prepare_enable(tcd->clk);
clk_enable(tcd->clk);
/* slow clock, count up to RC, then irq and stop */
__raw_writel(timer_clock | ATMEL_TC_CPCSTOP
@ -194,7 +194,7 @@ static int __init setup_clkevents(struct atmel_tc *tc, int clk32k_divisor_idx)
ret = clk_prepare_enable(t2_clk);
if (ret)
return ret;
clk_disable_unprepare(t2_clk);
clk_disable(t2_clk);
clkevt.regs = tc->regs;
clkevt.clk = t2_clk;

2
drivers/clocksource/timer-marco.c
View File

@ -199,7 +199,7 @@ static int sirfsoc_local_timer_setup(struct clock_event_device *ce)
action->dev_id = ce;
BUG_ON(setup_irq(ce->irq, action));
irq_set_affinity(action->irq, cpumask_of(cpu));
irq_force_affinity(action->irq, cpumask_of(cpu));
clockevents_register_device(ce);
return 0;