.../external_flash.c: Don't attempt to issue CMD_READ_STATUS2 for

devices with only a single_status_byte.

Author: bd34n

supervisor/shared/external_flash/external_flash.c

@@ -218,11 +218,12 @@ void supervisor_flash_init(void) {
     do {
         spi_flash_read_command(CMD_READ_STATUS, read_status_response, 1);
     } while ((read_status_response[0] & 0x1) != 0);
-    // The suspended write/erase bit should be low.
-    do {
+    if (!flash_device->single_status_byte) {
+      // The suspended write/erase bit should be low.
+      do {
         spi_flash_read_command(CMD_READ_STATUS2, read_status_response, 1);
-    } while ((read_status_response[0] & 0x80) != 0);
-
+      } while ((read_status_response[0] & 0x80) != 0);
+    }
 
     spi_flash_command(CMD_ENABLE_RESET);
     spi_flash_command(CMD_RESET);