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authorJimmy Rentz <jb17bsome@gmail.com>2011-04-17 16:15:09 -0400
committerBen Skeggs <bskeggs@redhat.com>2011-05-09 08:42:49 +1000
commit7a7b94ad8ce3e24d4dd97b45583911e0f03aecd6 (patch)
tree9f9c6ebd78c2d7c008cc194fe3e0e631a3d97270 /drivers/gpu
parent8aeb96f80232e9a701b5c4715504f4c9173978bd (diff)
downloadop-kernel-dev-7a7b94ad8ce3e24d4dd97b45583911e0f03aecd6.zip
op-kernel-dev-7a7b94ad8ce3e24d4dd97b45583911e0f03aecd6.tar.gz
drm/nouveau: Fix a crash at card takedown for NV40 and older cards
NV40 and older cards (pre NV50) reserve a vram bo for the vga memory at card init. This bo is then freed at card shutdown. The problem is that the ttm bo vram manager was already freed. So a crash occurs when the vga bo is freed. The fix is to free the vga bo prior to freeing the ttm bo vram manager. There might be other solutions but this seemed the simplest to me. Signed-off-by: Jimmy Rentz <jb17bsome@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu')
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_mem.c2
-rw-r--r--drivers/gpu/drm/nouveau/nouveau_state.c5
2 files changed, 5 insertions, 2 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_mem.c b/drivers/gpu/drm/nouveau/nouveau_mem.c
index 5045f8b..c3e953b 100644
--- a/drivers/gpu/drm/nouveau/nouveau_mem.c
+++ b/drivers/gpu/drm/nouveau/nouveau_mem.c
@@ -152,8 +152,6 @@ nouveau_mem_vram_fini(struct drm_device *dev)
{
struct drm_nouveau_private *dev_priv = dev->dev_private;
- nouveau_bo_ref(NULL, &dev_priv->vga_ram);
-
ttm_bo_device_release(&dev_priv->ttm.bdev);
nouveau_ttm_global_release(dev_priv);
diff --git a/drivers/gpu/drm/nouveau/nouveau_state.c b/drivers/gpu/drm/nouveau/nouveau_state.c
index a30adec..915fbce 100644
--- a/drivers/gpu/drm/nouveau/nouveau_state.c
+++ b/drivers/gpu/drm/nouveau/nouveau_state.c
@@ -768,6 +768,11 @@ static void nouveau_card_takedown(struct drm_device *dev)
engine->mc.takedown(dev);
engine->display.late_takedown(dev);
+ if (dev_priv->vga_ram) {
+ nouveau_bo_unpin(dev_priv->vga_ram);
+ nouveau_bo_ref(NULL, &dev_priv->vga_ram);
+ }
+
mutex_lock(&dev->struct_mutex);
ttm_bo_clean_mm(&dev_priv->ttm.bdev, TTM_PL_VRAM);
ttm_bo_clean_mm(&dev_priv->ttm.bdev, TTM_PL_TT);
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