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drm/i915: Fix oops on HWS unload 

Freeing the Hardware Status Page was writing to the HWS register in
order to disable the GPU writing to the HWS page. Unfortunately, we were
writing to the mmio register after unmapping the register space, hence
the oops.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Daniel Vetter 2010-10-10 18:54:08 +01:00 committed by Chris Wilson
parent 939fe4d7d6
commit 701394cc53
1 changed files with 3 additions and 3 deletions
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6
drivers/gpu/drm/i915/i915_dma.c
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@ -2133,9 +2133,6 @@ int i915_driver_unload(struct drm_device *dev)
if (dev->pdev->msi_enabled)
pci_disable_msi(dev->pdev);
if (dev_priv->regs != NULL)
iounmap(dev_priv->regs);
intel_opregion_fini(dev);
if (drm_core_check_feature(dev, DRIVER_MODESET)) {
@ -2157,6 +2154,9 @@ int i915_driver_unload(struct drm_device *dev)
i915_free_hws(dev);
}
if (dev_priv->regs != NULL)
iounmap(dev_priv->regs);
intel_teardown_gmbus(dev);
intel_teardown_mchbar(dev);