From: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
To: daniel.vetter@intel.com, jani.nikula@linux.intel.com,
seanpaul@chromium.org, airlied@linux.ie,
dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
ville.syrjala@linux.intel.com
Cc: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
Subject: [PATCH v2 1/2] drm: drm_vblank_cleanup: WARN when refcount > 0
Date: Tue, 24 Oct 2017 22:18:16 +0530 [thread overview]
Message-ID: <20171024164817.11287-1-prasannatsmkumar@gmail.com> (raw)
Warn when refcount > 0 in drm_vblank_cleanup.
Signed-off-by: PrasannaKumar Muralidharan <prasannatsmkumar@gmail.com>
---
No change in v2.
drivers/gpu/drm/drm_vblank.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/drm/drm_vblank.c b/drivers/gpu/drm/drm_vblank.c
index 70f2b95..3e61aeb 100644
--- a/drivers/gpu/drm/drm_vblank.c
+++ b/drivers/gpu/drm/drm_vblank.c
@@ -405,6 +405,8 @@ void drm_vblank_cleanup(struct drm_device *dev)
for (pipe = 0; pipe < dev->num_crtcs; pipe++) {
struct drm_vblank_crtc *vblank = &dev->vblank[pipe];
+ WARN_ON(atomic_read(&vblank->refcount) > 0);
+
WARN_ON(READ_ONCE(vblank->enabled) &&
drm_core_check_feature(dev, DRIVER_MODESET));
--
2.10.0
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next reply other threads:[~2017-10-24 16:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-24 16:48 PrasannaKumar Muralidharan [this message]
2017-10-24 16:48 ` [PATCH v2 2/2] Test case for drm_vblank_cleanup refcount validation patch PrasannaKumar Muralidharan
2017-10-25 15:14 ` PrasannaKumar Muralidharan
2017-10-30 10:10 ` [Intel-gfx] " Daniel Vetter
2017-10-30 12:31 ` PrasannaKumar Muralidharan
2017-10-31 10:21 ` Daniel Vetter
2017-10-31 15:07 ` PrasannaKumar Muralidharan
2017-10-31 16:27 ` Daniel Vetter
2017-11-01 4:18 ` [Intel-gfx] " PrasannaKumar Muralidharan
2017-11-01 8:53 ` Daniel Vetter
2017-11-01 16:00 ` PrasannaKumar Muralidharan
2017-10-24 17:19 ` ✗ Fi.CI.BAT: warning for series starting with [v2,1/2] drm: drm_vblank_cleanup: WARN when refcount > 0 Patchwork
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