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DRM: UDL: get rid of useless vblank initialization

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commit 32e932e37e upstream.

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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20180928144126.21598-1-Eugeniy.Paltsev@synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Eugeniy Paltsev
2018-09-28 17:41:26 +03:00
committed by Greg Kroah-Hartman
parent 29ac2218a9
commit ca3a6fd272
1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/udl/udl_main.c
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@@ -350,15 +350,10 @@ 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);