Commit f4c0468e authored by Dhinakaran Pandiyan's avatar Dhinakaran Pandiyan Committed by Rodrigo Vivi

drm/atomic: Handle 64-bit return from drm_crtc_vblank_count()

570e8696 ("drm: Widen vblank count to 64-bits [v3]") changed the
return type for drm_crtc_vblank_count() to u64.

The flip ioctl receives a 32-bit target sequence from user space and is
compared against the current sequence from drm_crtc_vblank_count(). So,
typecast return from drm_crtc_vblank_count() explicitly to add clarity.

__drm_crtcs_state.last_vblank_count however only ever stores the value from
drm_crtc_vblank_count() and can be upgraded to u64.

Cc: Keith Packard <keithp@keithp.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: default avatarDhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Reviewed-by: default avatarKeith Packard <keithp@keithp.com>
Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180203051302.9974-7-dhinakaran.pandiyan@intel.com
parent 3abe2413
......@@ -944,7 +944,7 @@ int drm_mode_page_flip_ioctl(struct drm_device *dev,
if (r)
return r;
current_vblank = drm_crtc_vblank_count(crtc);
current_vblank = (u32)drm_crtc_vblank_count(crtc);
switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
......
......@@ -145,7 +145,7 @@ struct __drm_crtcs_state {
struct drm_crtc *ptr;
struct drm_crtc_state *state, *old_state, *new_state;
s32 __user *out_fence_ptr;
unsigned last_vblank_count;
u64 last_vblank_count;
};
struct __drm_connnectors_state {
......
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