Sansa Fuze/e200v2: protect lcd a little better against concurrent access

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22838 a1c6a512-1295-4272-9138-f99709370657

2 files changed, 10 insertions, 4 deletions

diff --git a/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c b/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
index 23b2c3fc4e..35f06eae12 100644
--- a/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
+++ b/firmware/target/arm/as3525/sansa-e200v2/lcd-e200v2.c
@@ -502,9 +502,10 @@ void lcd_update(void)
     if (!display_on)
         return;
 
+    lcd_busy = true;
+
     lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
 
-    lcd_busy = true;
     /* Set start position and window */
     lcd_window(0, 0, LCD_WIDTH-1, LCD_HEIGHT-1);
 
@@ -544,8 +545,10 @@ void lcd_update_rect(int x, int y, int width, int height)
     if (y >= ymax)
         return; /* nothing left to do */
 
-    lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
     lcd_busy = true;
+
+    lcd_write_reg(R_ENTRY_MODE, r_entry_mode);
+    
     lcd_window(x, y, xmax, ymax);
     lcd_write_cmd(R_WRITE_DATA_2_GRAM);
 
diff --git a/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c b/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
index a1a2be25d7..d8cec6435b 100644
--- a/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
+++ b/firmware/target/arm/as3525/sansa-fuze/lcd-fuze.c
@@ -349,9 +349,11 @@ void lcd_update(void)
 {
     if (!display_on)
         return;
-    lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
 
     lcd_busy = true;
+
+    lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
+
     lcd_window_x(0, LCD_WIDTH - 1);
     lcd_window_y(0, LCD_HEIGHT - 1);
 
@@ -391,9 +393,10 @@ void lcd_update_rect(int x, int y, int width, int height)
     if (y >= ymax)
         return; /* nothing left to do */
 
+    lcd_busy = true;
+
     lcd_write_reg(R_ENTRY_MODE, R_ENTRY_MODE_HORZ);
 
-    lcd_busy = true;
     lcd_window_x(x, xmax);
     lcd_window_y(y, ymax);