From 28fb6ff363a1a16be587fa49071636fdd4a3a97e Mon Sep 17 00:00:00 2001
From: Lyude Paul <lyude@redhat.com>
Date: Mon, 20 Jul 2020 15:07:33 -0400
Subject: drm/vblank: Use spin_(un)lock_irq() in drm_crtc_vblank_on()
Git-commit: 92cc68e35863c1c61c449efa2b2daef6e9926048
Patch-mainline: v5.9-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
This is only called from:
* Atomic modesetting hooks
* Module probing routines
* Legacy modesetting hooks
All of which have IRQs enabled, so we can also get rid of
irqsave/restore here to make the IRQ context of this function more
obvious.
Signed-off-by: Lyude Paul <lyude@redhat.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200720190736.180297-3-lyude@redhat.com
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/drm_vblank.c | 5 ++---
1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
index 6af78aecea9d..9891e82939e3 100644
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@@ -1428,12 +1428,11 @@ void drm_crtc_vblank_on(struct drm_crtc *crtc)
struct drm_device *dev = crtc->dev;
unsigned int pipe = drm_crtc_index(crtc);
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
- unsigned long irqflags;
if (drm_WARN_ON(dev, pipe >= dev->num_crtcs))
return;
- spin_lock_irqsave(&dev->vbl_lock, irqflags);
+ spin_lock_irq(&dev->vbl_lock);
drm_dbg_vbl(dev, "crtc %d, vblank enabled %d, inmodeset %d\n",
pipe, vblank->enabled, vblank->inmodeset);
@@ -1451,7 +1450,7 @@ void drm_crtc_vblank_on(struct drm_crtc *crtc)
*/
if (atomic_read(&vblank->refcount) != 0 || drm_vblank_offdelay == 0)
drm_WARN_ON(dev, drm_vblank_enable(dev, pipe));
- spin_unlock_irqrestore(&dev->vbl_lock, irqflags);
+ spin_unlock_irq(&dev->vbl_lock);
}
EXPORT_SYMBOL(drm_crtc_vblank_on);
--
2.29.2