[PATCH] drm/mgag200/mgag200_mode.c: fix wrong do_div() usage

[Nicolas Pitre]

do_div() is meant to be used with an unsigned dividend.

Signed-off-by: Nicolas Pitre <nico at linaro.org>

diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c 
b/drivers/gpu/drm/mgag200/mgag200_mode.c
index c99d3fe128..1d4c480f5c 100644
--- a/drivers/gpu/drm/mgag200/mgag200_mode.c
+++ b/drivers/gpu/drm/mgag200/mgag200_mode.c
@@ -1564,7 +1564,7 @@ static uint32_t mga_vga_calculate_mode_bandwidth(struct 
drm_display_mode *mode,
                                                        int bits_per_pixel)
 {
        uint32_t total_area, divisor;
-       int64_t active_area, pixels_per_second, bandwidth;
+       uint64_t active_area, pixels_per_second, bandwidth;
        uint64_t bytes_per_pixel = (bits_per_pixel + 7) / 8;

        divisor = 1024;