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Merge pull request #14534 from bergzand/pr/cortexm/irq_during_idle

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cortexm_common: disable IRQ during thread_sched_idle
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Martine Lenders 2020-07-16 15:35:14 +02:00 committed by GitHub
commit ea8e867611
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1 changed files with 2 additions and 0 deletions
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cpu/cortexm_common/thread_arch.c
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@ -462,6 +462,7 @@ void sched_arch_idle(void)
* According to [this](http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0321a/BIHJICIE.html), * According to [this](http://infocenter.arm.com/help/index.jsp?topic=/com.arm.doc.dai0321a/BIHJICIE.html),
* dynamically changing the priority is not supported on CortexM0(+). * dynamically changing the priority is not supported on CortexM0(+).
*/ */
unsigned state = irq_disable();
NVIC_SetPriority(PendSV_IRQn, CPU_CORTEXM_PENDSV_IRQ_PRIO + 1); NVIC_SetPriority(PendSV_IRQn, CPU_CORTEXM_PENDSV_IRQ_PRIO + 1);
__DSB(); __DSB();
__ISB(); __ISB();
@ -471,5 +472,6 @@ void sched_arch_idle(void)
#else #else
__WFI(); __WFI();
#endif #endif
irq_restore(state);
NVIC_SetPriority(PendSV_IRQn, CPU_CORTEXM_PENDSV_IRQ_PRIO); NVIC_SetPriority(PendSV_IRQn, CPU_CORTEXM_PENDSV_IRQ_PRIO);
} }