diff options
Diffstat (limited to 'chip')
| -rw-r--r-- | chip/npcx/flash.c | 11 | ||||
| -rw-r--r-- | chip/stm32/bkpdata.c | 10 |
2 files changed, 16 insertions, 5 deletions
diff --git a/chip/npcx/flash.c b/chip/npcx/flash.c index 5bb8d209b4..b2b51d15df 100644 --- a/chip/npcx/flash.c +++ b/chip/npcx/flash.c @@ -60,8 +60,11 @@ static void flash_pinmux(int enable) static void flash_execute_cmd(uint8_t code, uint8_t cts) { - /* Flash mutex must be held while executing UMA commands. */ - ASSERT(flash_lock.lock); + /* + * Flash mutex must be held while executing UMA commands after + * task_start(). + */ + ASSERT(!task_start_called() || flash_lock.lock); /* set UMA_CODE */ NPCX_UMA_CODE = code; @@ -723,6 +726,10 @@ int flash_pre_init(void) void flash_lock_mapped_storage(int lock) { + /* Must not call mutex_lock() before task_start(). */ + if (!task_start_called()) + return; + if (lock) mutex_lock(&flash_lock); else diff --git a/chip/stm32/bkpdata.c b/chip/stm32/bkpdata.c index 2b26ace7ea..c31c1a9185 100644 --- a/chip/stm32/bkpdata.c +++ b/chip/stm32/bkpdata.c @@ -23,6 +23,7 @@ uint16_t bkpdata_read(enum bkpdata_index index) int bkpdata_write(enum bkpdata_index index, uint16_t value) { + int use_mutex = task_start_called(); static struct mutex bkpdata_write_mutex; if (index < 0 || index >= STM32_BKP_ENTRIES) @@ -30,9 +31,11 @@ int bkpdata_write(enum bkpdata_index index, uint16_t value) /* * Two entries share a single 32-bit register, lock mutex to prevent - * read/mask/write races. + * read/mask/write races. Must not call mutex_lock() before + * task_start(). */ - mutex_lock(&bkpdata_write_mutex); + if (use_mutex) + mutex_lock(&bkpdata_write_mutex); if (index & 1) { uint32_t val = STM32_BKP_DATA(index >> 1); val = (val & 0x0000FFFF) | (value << 16); @@ -42,7 +45,8 @@ int bkpdata_write(enum bkpdata_index index, uint16_t value) val = (val & 0xFFFF0000) | value; STM32_BKP_DATA(index >> 1) = val; } - mutex_unlock(&bkpdata_write_mutex); + if (use_mutex) + mutex_unlock(&bkpdata_write_mutex); return EC_SUCCESS; } |