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fix(esp_hw_support): fix possible dead lock in deepsleep process

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This commit is contained in:
wuzhenghui
2026-05-29 21:12:40 +08:00
parent 29ab420c19
commit ca64f41cda
1 changed files with 13 additions and 1 deletions
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14
components/esp_hw_support/sleep_modes.c
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@@ -1224,10 +1224,18 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
esp_sync_timekeeping_timers();
// Must acquire all spinlocks which may be acquired during sleep process before stalling other core,
// otherwise deadlock may occur.
portENTER_CRITICAL(&spinlock_rtc_deep_sleep);
#if !CONFIG_FREERTOS_UNICORE
extern portMUX_TYPE rtc_spinlock;
portENTER_CRITICAL_SAFE(&rtc_spinlock); // Maybe acquired from temp_sensor_get_raw_value by phy_close_rf callback
esp_clk_private_lock(); // Maybe acquired from esp_clk_slowclk_cal_set
#endif
/* Disable interrupts and stall another core in case another task writes
* to RTC memory while we calculate RTC memory CRC.
*/
portENTER_CRITICAL(&spinlock_rtc_deep_sleep);
esp_ipc_isr_stall_other_cpu();
esp_ipc_isr_stall_pause();
@@ -1298,6 +1306,10 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
// Never returns here, except that the sleep is rejected.
esp_ipc_isr_stall_resume();
esp_ipc_isr_release_other_cpu();
#if !CONFIG_FREERTOS_UNICORE
esp_clk_private_unlock();
portEXIT_CRITICAL_SAFE(&rtc_spinlock);
#endif
portEXIT_CRITICAL(&spinlock_rtc_deep_sleep);
return err;
}