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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-02-24 08:39:55 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-02-24 08:39:55 +0100
commitba08cf452f3493e96793c9fec4ebb45e7101a0c0 (patch)
tree61200038de5d9c6ba50dadfa7f065d029fa06174 /drivers/gpu/drm/drm_modes.c
parente24cd4e6d6aa3ca741cdfdfc01118c4016acebea (diff)
parentf8788d86ab28f61f7b46eb6be375f8a726783636 (diff)
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Merge 5.6-rc3 into tty-next
We want the tty fixes in here as well. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/gpu/drm/drm_modes.c')
-rw-r--r--drivers/gpu/drm/drm_modes.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c
index 10336b144c72..d4d64518e11b 100644
--- a/drivers/gpu/drm/drm_modes.c
+++ b/drivers/gpu/drm/drm_modes.c
@@ -1698,6 +1698,13 @@ static int drm_mode_parse_cmdline_options(const char *str,
if (rotation && freestanding)
return -EINVAL;
+ if (!(rotation & DRM_MODE_ROTATE_MASK))
+ rotation |= DRM_MODE_ROTATE_0;
+
+ /* Make sure there is exactly one rotation defined */
+ if (!is_power_of_2(rotation & DRM_MODE_ROTATE_MASK))
+ return -EINVAL;
+
mode->rotation_reflection = rotation;
return 0;