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Date: Sat, 3 Mar 2018 22:28:48 +0000
From: Sasha Levin <Alexander.Levin@...rosoft.com>
To: "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"stable@...r.kernel.org" <stable@...r.kernel.org>
CC: Sinclair Yeh <syeh@...are.com>,
Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 091/219] drm/vmwgfx: Fixes to vmwgfx_fb
From: Sinclair Yeh <syeh@...are.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@...are.com>
Reviewed-by: Thomas Hellstrom <thellstrom@...are.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.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/vmwgfx_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 = 0;
set.mode = NULL;
set.fb = NULL;
- set.num_connectors = 1;
+ set.num_connectors = 0;
set.connectors = &par->con;
ret = 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);
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);
return 0;
--
2.14.1
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