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| author |   Russell King <rmk+kernel@arm.linux.org.uk> | 2015-06-15 10:13:29 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2015-07-15 16:45:29 +0100 |
| commit | 070f3f6baef5c749e8b11be0455fc90113dfdde8 (patch) | |
| tree | afa77655b8bb0aeda93dfe59ec3115b2bc5c09ba /drivers/gpu/drm/armada/armada_overlay.c | |
| parent | Linux 4.1 (diff) | |
| download | linux-dev-070f3f6baef5c749e8b11be0455fc90113dfdde8.tar.xz linux-dev-070f3f6baef5c749e8b11be0455fc90113dfdde8.zip | |
drm/armada: fix missing overlay wake-up
Nothing was waking up the overlay plane wait queue, so we were fully
reliant on the HZ/25 wait timing out to make progress. Fix the lack
of wake-up.
We were also mis-handling the wait_event_timeout() return value - this
returns an unsigned integer of the remaining time, or zero on timeout
and the condition evaluated false. Checking this for less than zero
is not sane.
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to '')
| -rw-r--r-- | drivers/gpu/drm/armada/armada_overlay.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/gpu/drm/armada/armada_overlay.c b/drivers/gpu/drm/armada/armada_overlay.c index c5b06fdb459c..0abf785f5d0f 100644 --- a/drivers/gpu/drm/armada/armada_overlay.c +++ b/drivers/gpu/drm/armada/armada_overlay.c @@ -85,6 +85,8 @@ static void armada_plane_vbl(struct armada_crtc *dcrtc, void *data) if (fb) armada_drm_queue_unref_work(dcrtc->crtc.dev, fb); + + wake_up(&dplane->vbl.wait); } static unsigned armada_limit(int start, unsigned size, unsigned max) @@ -150,11 +152,9 @@ armada_plane_update(struct drm_plane *plane, struct drm_crtc *crtc, dcrtc->base + LCD_SPU_SRAM_PARA1); } - ret = wait_event_timeout(dplane->vbl.wait, - list_empty(&dplane->vbl.update.node), - HZ/25); - if (ret < 0) - return ret; + wait_event_timeout(dplane->vbl.wait, + list_empty(&dplane->vbl.update.node), + HZ/25); if (plane->fb != fb) { struct armada_gem_object *obj = drm_fb_obj(fb); |