Lcd save function pointer to frame buffer get_address_fn before loops

Calling multiple levels of indirection in a loop slows things down

Really these need to be rewritten to take a start and end address
like most of the rest of the codebase

But this is safer without having test hardware in hand

Change-Id: Idae7b92ee779d020ed7fcc9334e2d5a9c710e64d

1 files changed, 2 insertions, 1 deletions

diff --git a/firmware/target/arm/samsung/yh920/lcd-yh920.c b/firmware/target/arm/samsung/yh920/lcd-yh920.c
index 06aa3d718d..6a579f382a 100644
--- a/firmware/target/arm/samsung/yh920/lcd-yh920.c
+++ b/firmware/target/arm/samsung/yh920/lcd-yh920.c
@@ -253,13 +253,14 @@ void lcd_update_rect(int x, int y, int width, int height)
     if(ymax >= LCD_FBHEIGHT)
         ymax = LCD_FBHEIGHT-1;
 
+    void* (*fbaddr)(int x, int y) = FB_CURRENTVP_BUFFER->get_address_fn;
     /* Copy specified rectange bitmap to hardware */
     for (; y <= ymax; y++)
     {
         lcd_write_reg(LCD_CNTL_PAGE, y);
         lcd_write_reg(LCD_CNTL_COLUMN, x);
 
-        addr = FBADDR(x,y);
+        addr = fbaddr(x,y);
 
         lcd_send_cmd(LCD_CNTL_DATA_WRITE);
         lcd_write_data(addr, width);