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authorGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-02-24 10:27:54 +0300
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-02-24 10:27:54 +0300
commit1f836f5b10f2524d33efde47d2b694b861ecf319 (patch)
treeb52188b30d08bff1fe6376832753ca5e0a7e9d15 /drivers/gpu/drm/drm_modes.c
parenta27ad0f7da7ba3d4cf50a08ee5e2cb4b578a4a4c (diff)
parentf8788d86ab28f61f7b46eb6be375f8a726783636 (diff)
downloadlinux-1f836f5b10f2524d33efde47d2b694b861ecf319.tar.xz
Merge 5.6-rc3 into char-misc-next
We need the char/misc 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;