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drm/vmwgfx fixes for 5.12-rc7

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vmwgfx:
 - fixed unpinning before destruction
 - lockdep init reordering
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Merge tag 'drm-fixes-2021-04-18' of git://anongit.freedesktop.org/drm/drm

Pull vmwgfx fixes from Dave Airlie:
 "This contains two regression fixes for vmwgfx, one due to a refactor
  which meant locks were being used before initialisation, and the other
  in fixing up some warnings from the core when destroying pinned
  buffers.

  vmwgfx:

   - fixed unpinning before destruction

   - lockdep init reordering"

* tag 'drm-fixes-2021-04-18' of git://anongit.freedesktop.org/drm/drm:
  drm/vmwgfx: Make sure bo's are unpinned before putting them back
  drm/vmwgfx: Fix the lockdep breakage
  drm/vmwgfx: Make sure we unpin no longer needed buffers
This commit is contained in:
Linus Torvalds 2021-04-17 20:00:36 -07:00
commit aba5970c4d
4 changed files with 28 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/drm/vmwgfx/vmwgfx_cotable.c
View File

@ -481,11 +481,15 @@ static int vmw_cotable_resize(struct vmw_resource *res, size_t new_size)
vmw_bo_unreference(&old_buf);
res->id = vcotbl->type;
/* Release the pin acquired in vmw_bo_init */
ttm_bo_unpin(bo);
return 0;
out_map_new:
ttm_bo_kunmap(&old_map);
out_wait:
ttm_bo_unpin(bo);
ttm_bo_unreserve(bo);
vmw_bo_unreference(&buf);

19
drivers/gpu/drm/vmwgfx/vmwgfx_drv.c
View File

@ -712,6 +712,15 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
dev_priv->last_read_seqno = (uint32_t) -100;
dev_priv->drm.dev_private = dev_priv;
mutex_init(&dev_priv->cmdbuf_mutex);
mutex_init(&dev_priv->binding_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);
ret = vmw_setup_pci_resources(dev_priv, pci_id);
if (ret)
return ret;
@ -719,16 +728,6 @@ static int vmw_driver_load(struct vmw_private *dev_priv, u32 pci_id)
if (ret)
goto out_no_pci_or_version;
mutex_init(&dev_priv->cmdbuf_mutex);
mutex_init(&dev_priv->release_mutex);
mutex_init(&dev_priv->binding_mutex);
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);
for (i = vmw_res_context; i < vmw_res_max; ++i) {
idr_init(&dev_priv->res_idr[i]);

5
drivers/gpu/drm/vmwgfx/vmwgfx_drv.h
View File

@ -529,7 +529,6 @@ struct vmw_private {
struct vmw_overlay *overlay_priv;
struct drm_property *hotplug_mode_update_property;
struct drm_property *implicit_placement_property;
struct mutex global_kms_state_mutex;
spinlock_t cursor_lock;
struct drm_atomic_state *suspend_state;
@ -592,7 +591,6 @@ struct vmw_private {
bool refuse_hibernation;
bool suspend_locked;
struct mutex release_mutex;
atomic_t num_fifo_resources;
/*
@ -1524,9 +1522,8 @@ static inline void vmw_bo_unreference(struct vmw_buffer_object **buf)
struct vmw_buffer_object *tmp_buf = *buf;
*buf = NULL;
if (tmp_buf != NULL) {
if (tmp_buf != NULL)
ttm_bo_put(&tmp_buf->base);
}
}
static inline struct vmw_buffer_object *

14
drivers/gpu/drm/vmwgfx/vmwgfx_mob.c
View File

@ -94,6 +94,16 @@ static void vmw_mob_pt_setup(struct vmw_mob *mob,
struct vmw_piter data_iter,
unsigned long num_data_pages);
static inline void vmw_bo_unpin_unlocked(struct ttm_buffer_object *bo)
{
int ret = ttm_bo_reserve(bo, false, true, NULL);
BUG_ON(ret != 0);
ttm_bo_unpin(bo);
ttm_bo_unreserve(bo);
}
/*
* vmw_setup_otable_base - Issue an object table base setup command to
* the device
@ -277,6 +287,7 @@ out_no_setup:
&batch->otables[i]);
}
vmw_bo_unpin_unlocked(batch->otable_bo);
ttm_bo_put(batch->otable_bo);
batch->otable_bo = NULL;
return ret;
@ -340,6 +351,7 @@ static void vmw_otable_batch_takedown(struct vmw_private *dev_priv,
BUG_ON(ret != 0);
vmw_bo_fence_single(bo, NULL);
ttm_bo_unpin(bo);
ttm_bo_unreserve(bo);
ttm_bo_put(batch->otable_bo);
@ -528,6 +540,7 @@ static void vmw_mob_pt_setup(struct vmw_mob *mob,
void vmw_mob_destroy(struct vmw_mob *mob)
{
if (mob->pt_bo) {
vmw_bo_unpin_unlocked(mob->pt_bo);
ttm_bo_put(mob->pt_bo);
mob->pt_bo = NULL;
}
@ -643,6 +656,7 @@ int vmw_mob_bind(struct vmw_private *dev_priv,
out_no_cmd_space:
vmw_fifo_resource_dec(dev_priv);
if (pt_set_up) {
vmw_bo_unpin_unlocked(mob->pt_bo);
ttm_bo_put(mob->pt_bo);
mob->pt_bo = NULL;
}