efi_loader: avoid EFI_CALL() for clearing screen

Carve out function efi_clear_screen.

Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt@canonical.com>

diff --git a/lib/efi_loader/efi_console.c b/lib/efi_loader/efi_console.c
index 3354b21..6d4784e 100644 (file)
--- a/lib/efi_loader/efi_console.c
+++ b/lib/efi_loader/efi_console.c
@@ -462,6 +462,20 @@ static efi_status_t EFIAPI efi_cout_set_attribute(
 
 /**
  * efi_cout_clear_screen() - clear screen
+ */
+static void efi_clear_screen(void)
+{
+       /*
+        * The Linux console wants both a clear and a home command. The video
+        * uclass does not support <ESC>[H without coordinates, yet.
+        */
+       printf(ESC "[2J" ESC "[1;1H");
+       efi_con_mode.cursor_column = 0;
+       efi_con_mode.cursor_row = 0;
+}
+
+/**
+ * efi_cout_clear_screen() - clear screen
  *
  * This function implements the ClearScreen service of the simple text output
  * protocol. See the Unified Extensible Firmware Interface (UEFI) specification
@@ -475,13 +489,7 @@ static efi_status_t EFIAPI efi_cout_clear_screen(
 {
        EFI_ENTRY("%p", this);
 
-       /*
-        * The Linux console wants both a clear and a home command. The video
-        * uclass does not support <ESC>[H without coordinates, yet.
-        */
-       printf(ESC "[2J" ESC "[1;1H");
-       efi_con_mode.cursor_column = 0;
-       efi_con_mode.cursor_row = 0;
+       efi_clear_screen();
 
        return EFI_EXIT(EFI_SUCCESS);
 }
@@ -510,7 +518,7 @@ static efi_status_t EFIAPI efi_cout_set_mode(
                return EFI_EXIT(EFI_UNSUPPORTED);
 
        efi_con_mode.mode = mode_number;
-       EFI_CALL(efi_cout_clear_screen(this));
+       efi_clear_screen();
 
        return EFI_EXIT(EFI_SUCCESS);
 }
@@ -536,7 +544,7 @@ static efi_status_t EFIAPI efi_cout_reset(
        efi_con_mode.attribute = 0x07;
        printf(ESC "[0;37;40m");
        /* Clear screen */
-       EFI_CALL(efi_cout_clear_screen(this));
+       efi_clear_screen();
 
        return EFI_EXIT(EFI_SUCCESS);
 }