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fuze+: check rectangle coordinates in lcd_update_rect

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Change-Id: I5f23063751d7650b8eefd0f37393498d9a27bd19
This commit is contained in:
Amaury Pouly 2012-01-31 20:03:23 +01:00
parent ca104755f5
commit 0f02da208c
1 changed files with 6 additions and 0 deletions
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6
firmware/target/arm/imx233/sansa-fuzeplus/lcd-fuzeplus.c
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@ -501,6 +501,12 @@ void lcd_update_rect(int x, int y, int w, int h)
if(!lcd_on) if(!lcd_on)
return; return;
#endif #endif
/* make sure the rectangle is included in the screen */
x = MIN(x, LCD_WIDTH);
y = MIN(y, LCD_HEIGHT);
w = MIN(w, LCD_WIDTH - x);
h = MIN(h, LCD_HEIGHT - y);
imx233_lcdif_wait_ready(); imx233_lcdif_wait_ready();
lcd_write_reg(0x50, x); lcd_write_reg(0x50, x);
lcd_write_reg(0x51, x + w - 1); lcd_write_reg(0x51, x + w - 1);