diff options
authorKristian H. Kristensen <hoegsberg@gmail.com>2016-09-13 14:20:45 -0700
committerSean Paul <seanpaul@chromium.org>2016-09-15 10:42:11 -0400
commita988588b1806b40ae115fe1c9ab38706fd1a7c2b (patch)
parent96c594ba4f98ac957f4e597c77410a8132013a2d (diff)
drm: Only use compat ioctl for addfb2 on X86/IA64topic/drm-misc-2016-09-19
Similar to struct drm_update_draw, struct drm_mode_fb_cmd2 has an unaligned 64 bit field (modifier). This get packed differently between 32 bit and 64 bit modes on architectures that can handle unaligned 64 bit access (X86 and IA64). Other architectures pack the structs the same and don't need the compat wrapper. Use the same condition for drm_mode_fb_cmd2 as we use for drm_update_draw. Note that only the modifier will be packed differently between compat and non-compat versions. Reviewed-by: Rob Clark <robdclark@gmail.com> Signed-off-by: Kristian H. Kristensen <hoegsberg@chromium.org> [seanpaul added not at bottom of commit msg re: modifier] Signed-off-by: Sean Paul <seanpaul@chromium.org> Link: http://patchwork.freedesktop.org/patch/msgid/1473801645-116011-1-git-send-email-hoegsberg@chromium.org
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_ioc32.c b/drivers/gpu/drm/drm_ioc32.c
index 32a489b0faff..5f896e723f73 100644
--- a/drivers/gpu/drm/drm_ioc32.c
+++ b/drivers/gpu/drm/drm_ioc32.c
@@ -1016,6 +1016,7 @@ static int compat_drm_wait_vblank(struct file *file, unsigned int cmd,
return 0;
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
typedef struct drm_mode_fb_cmd232 {
u32 fb_id;
u32 width;
@@ -1072,6 +1073,7 @@ static int compat_drm_mode_addfb2(struct file *file, unsigned int cmd,
return 0;
static drm_ioctl_compat_t *drm_compat_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_VERSION32)] = compat_drm_version,
@@ -1105,7 +1107,9 @@ static drm_ioctl_compat_t *drm_compat_ioctls[] = {
[DRM_IOCTL_NR(DRM_IOCTL_UPDATE_DRAW32)] = compat_drm_update_draw,
[DRM_IOCTL_NR(DRM_IOCTL_WAIT_VBLANK32)] = compat_drm_wait_vblank,
+#if defined(CONFIG_X86) || defined(CONFIG_IA64)
[DRM_IOCTL_NR(DRM_IOCTL_MODE_ADDFB232)] = compat_drm_mode_addfb2,

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