The old_fb field is only used to indicate whether a page flip is pending. Turn it into a bool named flip_pending. Rename event and page_flip_work to flip_event and flip_work for consistency.
Signed-off-by: Laurent Pinchart laurent.pinchart@ideasonboard.com --- drivers/gpu/drm/omapdrm/omap_crtc.c | 47 ++++++++++++++++++++----------------- 1 file changed, 26 insertions(+), 21 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/omap_crtc.c b/drivers/gpu/drm/omapdrm/omap_crtc.c index 7ef9147..85129d5 100644 --- a/drivers/gpu/drm/omapdrm/omap_crtc.c +++ b/drivers/gpu/drm/omapdrm/omap_crtc.c @@ -54,19 +54,22 @@ struct omap_crtc { /* list of framebuffers to unpin */ struct list_head pending_unpins;
- /* if there is a pending flip, these will be non-null: */ - struct drm_pending_vblank_event *event; - struct drm_framebuffer *old_fb; + /* + * The flip_pending flag indicates if a page flip has been queued and + * hasn't completed yet. The flip event, if any, is stored in + * flip_event. + * + * The flip_work work queue handles page flip requests without caring + * about what context the GEM async callback is called from. Possibly we + * should just make omap_gem always call the cb from the worker so we + * don't have to care about this. + */ + bool flip_pending; + struct drm_pending_vblank_event *flip_event; + struct work_struct flip_work;
struct completion completion;
- /* for handling page flips without caring about what - * the callback is called from. Possibly we should just - * make omap_gem always call the cb from the worker so - * we don't have to care about this.. - */ - struct work_struct page_flip_work; - bool ignore_digit_sync_lost; };
@@ -293,11 +296,12 @@ static void omap_crtc_vblank_irq(struct omap_drm_irq *irq, uint32_t irqstatus) spin_lock_irqsave(&dev->event_lock, flags);
/* wakeup userspace */ - if (omap_crtc->event) - drm_send_vblank_event(dev, omap_crtc->pipe, omap_crtc->event); + if (omap_crtc->flip_event) + drm_send_vblank_event(dev, omap_crtc->pipe, + omap_crtc->flip_event);
- omap_crtc->event = NULL; - omap_crtc->old_fb = NULL; + omap_crtc->flip_event = NULL; + omap_crtc->flip_pending = false;
spin_unlock_irqrestore(&dev->event_lock, flags);
@@ -507,7 +511,7 @@ static int omap_crtc_mode_set_base(struct drm_crtc *crtc, int x, int y, static void page_flip_worker(struct work_struct *work) { struct omap_crtc *omap_crtc = - container_of(work, struct omap_crtc, page_flip_work); + container_of(work, struct omap_crtc, flip_work); struct drm_crtc *crtc = &omap_crtc->base; struct drm_display_mode *mode = &crtc->mode; struct drm_gem_object *bo; @@ -531,7 +535,7 @@ static void page_flip_cb(void *arg) struct omap_drm_private *priv = crtc->dev->dev_private;
/* avoid assumptions about what ctxt we are called from: */ - queue_work(priv->wq, &omap_crtc->page_flip_work); + queue_work(priv->wq, &omap_crtc->flip_work); }
static int omap_crtc_page_flip(struct drm_crtc *crtc, @@ -550,15 +554,16 @@ static int omap_crtc_page_flip(struct drm_crtc *crtc,
spin_lock_irqsave(&dev->event_lock, flags);
- if (omap_crtc->old_fb) { + if (omap_crtc->flip_pending) { spin_unlock_irqrestore(&dev->event_lock, flags); dev_err(dev->dev, "already a pending flip\n"); return -EBUSY; }
- omap_crtc->event = event; - omap_crtc->old_fb = primary->fb = fb; - drm_framebuffer_reference(omap_crtc->old_fb); + omap_crtc->flip_event = event; + omap_crtc->flip_pending = true; + primary->fb = fb; + drm_framebuffer_reference(fb);
spin_unlock_irqrestore(&dev->event_lock, flags);
@@ -640,7 +645,7 @@ struct drm_crtc *omap_crtc_init(struct drm_device *dev,
crtc = &omap_crtc->base;
- INIT_WORK(&omap_crtc->page_flip_work, page_flip_worker); + INIT_WORK(&omap_crtc->flip_work, page_flip_worker);
INIT_LIST_HEAD(&omap_crtc->pending_unpins);