diff options
| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2011-10-30 15:44:56 +0400 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2011-12-22 22:54:58 +0400 |
| commit | 40c34d042dc2f8954d5f619f6348a8659a4b416f (patch) | |
| tree | c488dd68c7b146adc0e1de4f870208b9427ad42f /drivers/gpu/drm/i810/i810_dma.c | |
| parent | 87499ffdcb1c70f66988cd8febc4ead0ba2f9118 (diff) | |
| download | linux-40c34d042dc2f8954d5f619f6348a8659a4b416f.tar.xz | |
drm/i810: don't acces hw regs in lastclose
i810 uses a userspace provided mmio map using the drm core map
infrastructure. By the time we reach lastclose, this is all gone
and our mmio_map pointer points at freed memory. Depending upon
luck that still works, most often it just oopses.
Aside: drm maps aren't refcounted, so userspace can essentially oops
the kernel any time it wants to. Who cares.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Diffstat (limited to 'drivers/gpu/drm/i810/i810_dma.c')
| -rw-r--r-- | drivers/gpu/drm/i810/i810_dma.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/drivers/gpu/drm/i810/i810_dma.c b/drivers/gpu/drm/i810/i810_dma.c index 6b73c3e57d63..f7c17b239833 100644 --- a/drivers/gpu/drm/i810/i810_dma.c +++ b/drivers/gpu/drm/i810/i810_dma.c @@ -222,8 +222,6 @@ static int i810_dma_cleanup(struct drm_device *dev) pci_free_consistent(dev->pdev, PAGE_SIZE, dev_priv->hw_status_page, dev_priv->dma_status_page); - /* Need to rewrite hardware status page */ - I810_WRITE(0x02080, 0x1ffff000); } kfree(dev->dev_private); dev->dev_private = NULL; |