drm/tilcdc: replace spin_lock_irqsave by spin_lock in hard IRQ

The code has been in a irq-disabled context since it is hard IRQ. There
is no necessity to do it again.

Signed-off-by: Tian Tao <tiantao6@hisilicon.com>
Reviewed-by: Jyri Sarha <jyri.sarha@iki.fi>
Tested-by: Jyri Sarha <jyri.sarha@iki.fi>
Signed-off-by: Jyri Sarha <jyri.sarha@iki.fi>
Link: https://patchwork.freedesktop.org/patch/msgid/1612751576-42512-1-git-send-email-tiantao6@hisilicon.com

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index d99afd1..783ae9d 100644 (file)
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -913,13 +913,12 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc)
        tilcdc_clear_irqstatus(dev, stat);
 
        if (stat & LCDC_END_OF_FRAME0) {
-               unsigned long flags;
                bool skip_event = false;
                ktime_t now;
 
                now = ktime_get();
 
-               spin_lock_irqsave(&tilcdc_crtc->irq_lock, flags);
+               spin_lock(&tilcdc_crtc->irq_lock);
 
                tilcdc_crtc->last_vblank = now;
 
@@ -929,21 +928,21 @@ irqreturn_t tilcdc_crtc_irq(struct drm_crtc *crtc)
                        skip_event = true;
                }
 
-               spin_unlock_irqrestore(&tilcdc_crtc->irq_lock, flags);
+               spin_unlock(&tilcdc_crtc->irq_lock);
 
                drm_crtc_handle_vblank(crtc);
 
                if (!skip_event) {
                        struct drm_pending_vblank_event *event;
 
-                       spin_lock_irqsave(&dev->event_lock, flags);
+                       spin_lock(&dev->event_lock);
 
                        event = tilcdc_crtc->event;
                        tilcdc_crtc->event = NULL;
                        if (event)
                                drm_crtc_send_vblank_event(crtc, event);
 
-                       spin_unlock_irqrestore(&dev->event_lock, flags);
+                       spin_unlock(&dev->event_lock);
                }
 
                if (tilcdc_crtc->frame_intact)