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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 9d24b38a42
commit 12af88b3d9
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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@@ -1167,10 +1167,18 @@ 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.
esp_os_enter_critical(&spinlock_rtc_deep_sleep);
#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
/* Disable interrupts and stall another core in case another task writes
* to RTC memory while we calculate RTC memory CRC.
*/
esp_os_enter_critical(&spinlock_rtc_deep_sleep);
esp_ipc_isr_stall_other_cpu();
esp_ipc_isr_stall_pause();
#if CONFIG_ESP_INT_WDT && CONFIG_ESP32_ECO3_CACHE_LOCK_FIX
@@ -1250,6 +1258,10 @@ static esp_err_t FORCE_IRAM_ATTR deep_sleep_start(bool allow_sleep_rejection)
#endif
esp_ipc_isr_stall_resume();
esp_ipc_isr_release_other_cpu();
#if !CONFIG_FREERTOS_UNICORE
esp_clk_private_unlock();
esp_os_exit_critical_safe(&rtc_spinlock);
#endif
esp_os_exit_critical(&spinlock_rtc_deep_sleep);
return err;
}