Commit f018edc3 authored by BALATON Zoltan's avatar BALATON Zoltan Committed by Gerd Hoffmann
Browse files

sm501: Do not allow guest to set invalid format 



Prevent guest setting invalid format value that might trip checks in
sm501_2d_operation().

Signed-off-by: default avatarBALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: default avatarPeter Maydell <peter.maydell@linaro.org>
Message-id: 26d4fa9b8ce81e2723e98d592ccba7550042752c.1592686588.git.balaton@eik.bme.hu
Signed-off-by: default avatarGerd Hoffmann <kraxel@redhat.com>
parent ba27110f

hw/display/sm501.c

+3 −0
Original line number Diff line number Diff line
@@ -1503,6 +1503,9 @@ static void sm501_2d_engine_write(void *opaque, hwaddr addr, 
        s->twoD_background = value;

        break;

    case SM501_2D_STRETCH:

        if (((value >> 20) & 3) == 3) {

            value &= ~BIT(20);

        }

        s->twoD_stretch = value;

        break;

    case SM501_2D_COLOR_COMPARE: