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| author | Adam Jackson <ajax@redhat.com> | 2015-06-15 16:16:15 -0400 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2015-06-29 12:29:07 -0700 |
| commit | 2c94aabff872d175572af9f8b1003a7e53806e5a (patch) | |
| tree | 9fd1678fabae79e359393074aa78938549aa9d06 | |
| parent | ad57c140b86de638bc841a913fbbd87b4204abf2 (diff) | |
| download | lwn-2c94aabff872d175572af9f8b1003a7e53806e5a.tar.gz lwn-2c94aabff872d175572af9f8b1003a7e53806e5a.zip | |
drm/mgag200: Reject non-character-cell-aligned mode widths
commit 25161084b1c1b0c29948f6f77266a35f302196b7 upstream.
Turns out 1366x768 does not in fact work on this hardware.
Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -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 9872ba9abf1a..2ffeda3589c2 100644 --- a/drivers/gpu/drm/mgag200/mgag200_mode.c +++ b/drivers/gpu/drm/mgag200/mgag200_mode.c @@ -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 || |