diff options
| author | Adam Jackson <ajax@redhat.com> | 2015-06-15 16:16:15 -0400 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-07-01 22:07:25 -0400 |
| commit | c73e05a513216291a0d0183110dfee347e6188ff (patch) | |
| tree | fb88114dd8da22e14ca78a3ce845e476489676e3 /drivers/gpu | |
| parent | fc9a24b42d2da53dfc4c08d7de126bef53204fa8 (diff) | |
| download | lwn-c73e05a513216291a0d0183110dfee347e6188ff.tar.gz lwn-c73e05a513216291a0d0183110dfee347e6188ff.zip | |
drm/mgag200: Reject non-character-cell-aligned mode widths
[ Upstream commit 25161084b1c1b0c29948f6f77266a35f302196b7 ]
Turns out 1366x768 does not in fact work on this hardware.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/mgag200/mgag200_mode.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/mgag200/mgag200_mode.c b/drivers/gpu/drm/mgag200/mgag200_mode.c index 83485ab81ce8..d8e693d1f6d4 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -1525,6 +1525,11 @@ 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 || |