mode->hdisplay * (var->bits_per_pixel + 7) gets evaluated before the division, potentially making the pitch larger than it should be.
Since the original intention is to do a div-round-up, just use the macro instead.
Signed-off-by: Sinclair Yeh syeh@vmware.com Reviewed-by: Thomas Hellstrom thellstrom@vmware.com --- drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c index 3b1faf7..679a4cb 100644 --- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c +++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c @@ -573,9 +573,9 @@ static int vmw_fb_set_par(struct fb_info *info) mode = old_mode; old_mode = NULL; } else if (!vmw_kms_validate_mode_vram(vmw_priv, - mode->hdisplay * - (var->bits_per_pixel + 7) / 8, - mode->vdisplay)) { + mode->hdisplay * + DIV_ROUND_UP(var->bits_per_pixel, 8), + mode->vdisplay)) { drm_mode_destroy(vmw_priv->dev, mode); return -EINVAL; }