perf: skip unnecessary main data read in _lx_nand_flash_sector_read

Author: DongShiLei

common/src/lx_nand_flash_sector_read.c

@@ -143,9 +143,9 @@ LONG        page;
 
                 /* Read a page.  */
 #ifdef LX_NAND_ENABLE_CONTROL_BLOCK_FOR_DRIVER_INTERFACE
-                status = (nand_flash -> lx_nand_flash_driver_pages_read)(nand_flash, block, (ULONG)page, (UCHAR*)buffer, spare_buffer_ptr, 1);
+                status = (nand_flash -> lx_nand_flash_driver_pages_read)(nand_flash, block, (ULONG)page, (UCHAR*)NULL, spare_buffer_ptr, 1);
 #else
-                status = (nand_flash -> lx_nand_flash_driver_pages_read)(block, (ULONG)page, (UCHAR*)buffer, spare_buffer_ptr, 1);
+                status = (nand_flash -> lx_nand_flash_driver_pages_read)(block, (ULONG)page, (UCHAR*)NULL, spare_buffer_ptr, 1);
 #endif
 
                 /* Check for an error from flash driver.   */
@@ -166,6 +166,26 @@ LONG        page;
                 /* Get the logical sector number from spare bytes, and check if it matches the addressed sector number.  */
                 if ((LX_UTILITY_LONG_GET(&spare_buffer_ptr[nand_flash -> lx_nand_flash_spare_data1_offset]) & LX_NAND_PAGE_TYPE_USER_DATA_MASK) == logical_sector)
                 {
+#ifdef LX_NAND_ENABLE_CONTROL_BLOCK_FOR_DRIVER_INTERFACE
+                    status = (nand_flash -> lx_nand_flash_driver_pages_read)(nand_flash, block, (ULONG)page, (UCHAR*)buffer, NULL, 1);
+#else
+                    status = (nand_flash -> lx_nand_flash_driver_pages_read)(block, (ULONG)page, (UCHAR*)buffer, NULL, 1);
+#endif
+
+                    /* Check for an error from flash driver.   */
+                    if (status)
+                    {
+
+                        /* Call system error handler.  */
+                        _lx_nand_flash_system_error(nand_flash, status, block, 0);
+#ifdef LX_THREAD_SAFE_ENABLE
+
+                        /* Release the thread safe mutex.  */
+                        tx_mutex_put(&nand_flash -> lx_nand_flash_mutex);
+#endif
+                        /* Return an error.  */
+                        return(LX_ERROR);
+                    }
 #ifdef LX_THREAD_SAFE_ENABLE
 
                     /* Release the thread safe mutex.  */