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#1805 fix merge issue in pico_atomic which ended up with using IRQ disble instead of spin lock (#1838)

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Graham Sanderson 2024-08-19 12:13:51 -05:00 • committed by GitHub
parent b271208071
commit 62df126ad5
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1 changed files with 2 additions and 5 deletions
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7
src/rp2_common/pico_atomic/atomic.c
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@ -12,14 +12,11 @@
#define memcmp __builtin_memcmp #define memcmp __builtin_memcmp
static inline uint32_t atomic_lock(__unused const volatile void *ptr) { static inline uint32_t atomic_lock(__unused const volatile void *ptr) {
uint32_t save = save_and_disable_interrupts(); return spin_lock_blocking(spin_lock_instance(PICO_SPINLOCK_ID_ATOMIC));
// __dmb(); not necessary on RP2040
return save;
} }
static inline void atomic_unlock(__unused const volatile void *ptr, uint32_t save) { static inline void atomic_unlock(__unused const volatile void *ptr, uint32_t save) {
// __dmb(); not necessary on RP2040 spin_unlock(spin_lock_instance(PICO_SPINLOCK_ID_ATOMIC), save);
restore_interrupts_from_disabled(save);
} }
#if PICO_C_COMPILER_IS_GNU #if PICO_C_COMPILER_IS_GNU