[PATCH] drm/vmwgfx: fix spinlock initialization in vmw_driver_load()
Tetsuo Handa
penguin-kernel at I-love.SAKURA.ne.jp
Sun Mar 21 14:56:49 UTC 2021
Since vmw_write() from vmw_detect_version() from vmw_driver_load() calls
spin_lock(&dev_priv->hw_lock), spin_lock_init(&dev_priv->hw_lock) has to
be called before vmw_detect_version() is called, or lockdep gets disabled.
INFO: trying to register non-static key.
the code is fine but needs lockdep annotation.
turning off the locking correctness validator.
Signed-off-by: Tetsuo Handa <penguin-kernel at I-love.SAKURA.ne.jp>
Fixes: 8772c0bb58bbf98a ("drm/vmwgfx: Cleanup pci resource allocation")
---
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
index dd69b51c40e4..a8049092fb32 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
@@ -715,6 +715,7 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
ret = vmw_setup_pci_resources(dev_priv, pci_id);
if (ret)
return ret;
+ spin_lock_init(&dev_priv->hw_lock);
ret = vmw_detect_version(dev_priv);
if (ret)
goto out_no_pci_or_version;
@@ -725,7 +726,6 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
mutex_init(&dev_priv->global_kms_state_mutex);
ttm_lock_init(&dev_priv->reservation_sem);
spin_lock_init(&dev_priv->resource_lock);
- spin_lock_init(&dev_priv->hw_lock);
spin_lock_init(&dev_priv->waiter_lock);
spin_lock_init(&dev_priv->cap_lock);
spin_lock_init(&dev_priv->cursor_lock);
--
2.18.4
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