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fix(esp_hw_support): fix deepsleep deadlock at s_phy_int_mux

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wuzhenghui
2026-07-21 14:31:13 +08:00
parent f0316c53dc
commit 2c4a1837d1
1 changed files with 15 additions and 13 deletions
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28
components/esp_hw_support/sleep_modes.c
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@@ -1259,15 +1259,6 @@ 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.
esp_os_enter_critical(&s_config.lock);
#if !CONFIG_FREERTOS_UNICORE
extern portMUX_TYPE rtc_spinlock;
esp_os_enter_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
#if CONFIG_ESP_INT_WDT && CONFIG_ESP32_ECO3_CACHE_LOCK_FIX
// The other core will be stalled by high-priority interrupt and spins on variables in internal RAM,
// which naturally avoids cache livelock, so the 20ms livelock workaround timeout is not needed.
@@ -1275,10 +1266,25 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
// esp_int_wdt_livelock_workaround, which may cause deadlock.
esp_int_wdt_livelock_workaround(false);
#endif
/* Disable interrupts and stall another core in case another task writes
* to RTC memory while we calculate RTC memory CRC.
*/
esp_os_enter_critical(&s_config.lock);
#if CONFIG_FREERTOS_PORT_THREAD_SAFE_CLAIM
esp_ipc_isr_stall_other_cpu();
#else
/* Retry with the lock held on success. Drop the lock on failure so the other
* CPU can leave its critical section (and to avoid deadlock on s_config.lock).
*/
while (esp_ipc_isr_stall_other_cpu_safe() != ESP_OK) {
esp_os_exit_critical(&s_config.lock);
esp_rom_delay_us(portTICK_PERIOD_MS * 1000 / 10);
esp_os_enter_critical(&s_config.lock);
}
#endif
esp_ipc_isr_stall_pause();
// record current RTC time
@@ -1368,10 +1374,6 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
#if CONFIG_ESP_INT_WDT && CONFIG_ESP32_ECO3_CACHE_LOCK_FIX
// Configure WDT to use livelock workaround timeout after releasing other CPU
esp_int_wdt_livelock_workaround(true);
#endif
#if !CONFIG_FREERTOS_UNICORE
esp_clk_private_unlock();
esp_os_exit_critical_safe(&rtc_spinlock);
#endif
esp_os_exit_critical(&s_config.lock);