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arch: arm: cortex_m: fix inverted logic in cpu_idle

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This mistake was introduced when converting from ASM to C.
This change also restores the associated comment from the ASM source.

Signed-off-by: Wilfried Chauveau <wilfried.chauveau@arm.com>
This commit is contained in:
Wilfried Chauveau 2024-04-17 08:55:20 +01:00 • committed by Alberto Escolar
commit fb6ab560a5
1 changed files with 5 additions and 1 deletions
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6
arch/arm/core/cortex_m/cpu_idle.c
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@ -35,9 +35,13 @@ void z_arm_cpu_idle_init(void)
#if defined(CONFIG_ARM_ON_ENTER_CPU_IDLE_HOOK) #if defined(CONFIG_ARM_ON_ENTER_CPU_IDLE_HOOK)
#define SLEEP_IF_ALLOWED(wait_instr) do { \ #define SLEEP_IF_ALLOWED(wait_instr) do { \
if (!z_arm_on_enter_cpu_idle()) { \ /* Skip the wait instr if on_enter_cpu_idle returns false */ \
if (z_arm_on_enter_cpu_idle()) { \
/* Wait for all memory transaction to complete */ \
/* before entering low power state. */ \
__DSB(); \ __DSB(); \
wait_instr(); \ wait_instr(); \
/* Inline the macro provided by SoC-specific code */ \
ON_EXIT_IDLE_HOOK; \ ON_EXIT_IDLE_HOOK; \
} \ } \
} while (false) } while (false)