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Commit 25161084 authored by Adam Jackson's avatar Adam Jackson Committed by Dave Airlie
Browse files

drm/mgag200: Reject non-character-cell-aligned mode widths 



Turns out 1366x768 does not in fact work on this hardware.

Signed-off-by: default avatarAdam Jackson <ajax@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: default avatarDave Airlie <airlied@redhat.com>
parent 0f57d867

drivers/gpu/drm/mgag200/mgag200_mode.c

+5 −0
Original line number Diff line number Diff line
@@ -1526,6 +1526,11 @@ static int mga_vga_mode_valid(struct drm_connector *connector, 
		return MODE_BANDWIDTH;

	}



	if ((mode->hdisplay % 8) != 0 || (mode->hsync_start % 8) != 0 ||

	    (mode->hsync_end % 8) != 0 || (mode->htotal % 8) != 0) {

		return MODE_H_ILLEGAL;

	}



	if (mode->crtc_hdisplay > 2048 || mode->crtc_hsync_start > 4096 ||

	    mode->crtc_hsync_end > 4096 || mode->crtc_htotal > 4096 ||

	    mode->crtc_vdisplay > 2048 || mode->crtc_vsync_start > 4096 ||