Commit c4cd341a authored by Alexandru Gheorghe's avatar Alexandru Gheorghe Committed by Greg Kroah-Hartman

drm: mali-dp: Call drm_crtc_vblank_reset on device init

[ Upstream commit 69be1984ded00a11b1ed0888c6d8e4f35370372f ]

Currently, if userspace calls drm_wait_vblank before the crtc is
activated the crtc vblank_enable hook is called, which in case of
malidp driver triggers some warninngs. This happens because on
device init we don't inform the drm core about the vblank state
by calling drm_crtc_vblank_on/off/reset which together with
drm_vblank_get have some magic that prevents calling drm_vblank_enable
when crtc is off.
Signed-off-by: default avatarAlexandru Gheorghe <alexandru-cosmin.gheorghe@arm.com>
Acked-by: default avatarLiviu Dudau <liviu.dudau@arm.com>
Signed-off-by: default avatarLiviu Dudau <liviu.dudau@arm.com>
Signed-off-by: default avatarSasha Levin <alexander.levin@microsoft.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 51ddce70
......@@ -378,6 +378,7 @@ static int malidp_bind(struct device *dev)
goto irq_init_fail;
ret = drm_vblank_init(drm, drm->mode_config.num_crtc);
drm_crtc_vblank_reset(&malidp->crtc);
if (ret < 0) {
DRM_ERROR("failed to initialise vblank\n");
goto vblank_fail;
......
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