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From:   Sasha Levin <Alexander.Levin@microsoft.com>
To:     "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        "stable@vger.kernel.org" <stable@vger.kernel.org>
CC:     Sinclair Yeh <syeh@vmware.com>,
        Sasha Levin <Alexander.Levin@microsoft.com>
Subject: [PATCH AUTOSEL for 4.9 091/219] drm/vmwgfx: Fixes to vmwgfx_fb
Thread-Topic: [PATCH AUTOSEL for 4.9 091/219] drm/vmwgfx: Fixes to vmwgfx_fb
Thread-Index: AQHTsz7/DR8Tq61e3Uu3jkYINC/+EQ==
Date:   Sat, 3 Mar 2018 22:28:48 +0000
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From: Sinclair Yeh <syeh@vmware.com>

[ Upstream commit aa74f0687cfe998e59b20d6454f45e8aa4403c45 ]

1.  When unsetting a mode, num_connector should be set to zero
2.  The pixel_format field needs to be initialized as newer DRM internal
    functions checks this field
3.  Take the drm_modeset_lock_all() because vmw_fb_kms_detach() can
    change current mode

Signed-off-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Thomas Hellstrom <thellstrom@vmware.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
 drivers/gpu/drm/vmwgfx/vmwgfx_fb.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c b/drivers/gpu/drm/vmwgfx/vm=
wgfx_fb.c
index d2d93959b119..aec6e9eef489 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_fb.c
@@ -433,7 +433,7 @@ static int vmw_fb_kms_detach(struct vmw_fb_par *par,
 		set.y =3D 0;
 		set.mode =3D NULL;
 		set.fb =3D NULL;
-		set.num_connectors =3D 1;
+		set.num_connectors =3D 0;
 		set.connectors =3D &par->con;
 		ret =3D drm_mode_set_config_internal(&set);
 		if (ret) {
@@ -821,7 +821,9 @@ int vmw_fb_off(struct vmw_private *vmw_priv)
 	flush_delayed_work(&par->local_work);
=20
 	mutex_lock(&par->bo_mutex);
+	drm_modeset_lock_all(vmw_priv->dev);
 	(void) vmw_fb_kms_detach(par, true, false);
+	drm_modeset_unlock_all(vmw_priv->dev);
 	mutex_unlock(&par->bo_mutex);
=20
 	return 0;
--=20
2.14.1