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From 2d98fce2330347051c091d7c05da8cbc9f1a5feb Mon Sep 17 00:00:00 2001
From: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Date: Thu, 4 Oct 2018 20:42:12 +0300
Subject: [PATCH 1/3] DRM: UDL: get rid of useless vblank initialization
UDL doesn't support vblank functionality so we don't need to
initialize vblank here (we are able to send page flip
completion events even without vblank initialization)
Moreover current drm_vblank_init call with num_crtcs > 0 causes
sending DRM_EVENT_FLIP_COMPLETE event with zero timestamp every
time. This breaks userspace apps (for example weston) which
relies on timestamp value.
Cc: stable@vger.kernel.org
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
---
drivers/gpu/drm/udl/udl_main.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/udl/udl_main.c b/drivers/gpu/drm/udl/udl_main.c
index d518de8f496b..cf5d2dc494ee 100644
--- a/drivers/gpu/drm/udl/udl_main.c
+++ b/drivers/gpu/drm/udl/udl_main.c
@@ -349,15 +349,10 @@ int udl_driver_load(struct drm_device *dev, unsigned long flags)
if (ret)
goto err;
- ret = drm_vblank_init(dev, 1);
- if (ret)
- goto err_fb;
-
drm_kms_helper_poll_init(dev);
return 0;
-err_fb:
- udl_fbdev_cleanup(dev);
+
err:
if (udl->urbs.count)
udl_free_urb_list(dev);
--
2.16.2
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