diff --git a/components/spi_flash/spi_flash_os_func_app.c b/components/spi_flash/spi_flash_os_func_app.c
index fb0bad6ada..46147f8a95 100644
--- a/components/spi_flash/spi_flash_os_func_app.c
+++ b/components/spi_flash/spi_flash_os_func_app.c
@@ -74,7 +74,7 @@ IRAM_ATTR static void cache_disable(void* arg)
 }
 #endif  //#if !SPI_FLASH_CACHE_NO_DISABLE
 
-static IRAM_ATTR esp_err_t spi_start(void *arg)
+static IRAM_ATTR esp_err_t acquire_spi_bus_lock(void *arg)
 {
     spi_bus_lock_dev_handle_t dev_lock = ((app_func_arg_t *)arg)->dev_lock;
 
@@ -87,7 +87,7 @@ static IRAM_ATTR esp_err_t spi_start(void *arg)
     return ESP_OK;
 }
 
-static IRAM_ATTR esp_err_t spi_end(void *arg)
+static IRAM_ATTR esp_err_t release_spi_bus_lock(void *arg)
 {
     return spi_bus_lock_acquire_end(((app_func_arg_t *)arg)->dev_lock);
 }
@@ -105,7 +105,7 @@ static IRAM_ATTR esp_err_t spi1_start(void *arg)
      */
 #if CONFIG_SPI_FLASH_SHARE_SPI1_BUS
     //use the lock to disable the cache and interrupts before using the SPI bus
-    ret = spi_start(arg);
+    ret = acquire_spi_bus_lock(arg);
 #elif SPI_FLASH_CACHE_NO_DISABLE
     _lock_acquire(&s_spi1_flash_mutex);
 #else
@@ -124,7 +124,7 @@ static IRAM_ATTR esp_err_t spi1_end(void *arg)
      * There are three ways for ESP Flash API lock, see `spi1_start`
      */
 #if CONFIG_SPI_FLASH_SHARE_SPI1_BUS
-    ret = spi_end(arg);
+    ret = release_spi_bus_lock(arg);
 #elif SPI_FLASH_CACHE_NO_DISABLE
     _lock_release(&s_spi1_flash_mutex);
 #else
@@ -220,8 +220,8 @@ static const DRAM_ATTR esp_flash_os_functions_t esp_flash_spi1_default_os_functi
 };
 
 static const esp_flash_os_functions_t esp_flash_spi23_default_os_functions = {
-    .start = spi_start,
-    .end = spi_end,
+    .start = acquire_spi_bus_lock,
+    .end = release_spi_bus_lock,
     .delay_us = delay_us,
     .get_temp_buffer = get_buffer_malloc,
     .release_temp_buffer = release_buffer_malloc,