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enable bus mastering on i915 at resume time

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On 9xx chips, bus mastering needs to be enabled at resume time for much of the
chip to function.  With this patch, vblank interrupts will work as expected
on resume, along with other chip functions.   Fixes kernel bugzilla #10844.

Signed-off-by: Jie Luo <clotho67@gmail.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jie Luo
2008-06-24 10:38:31 -07:00
committed by Linus Torvalds
parent 72c6e251ed
commit ea7b44c8e6
1 changed files with 1 additions and 0 deletions
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drivers/char/drm/i915_drv.c
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@@ -389,6 +389,7 @@ static int i915_resume(struct drm_device *dev)
pci_restore_state(dev->pdev);
if (pci_enable_device(dev->pdev))
return -1;
pci_set_master(dev->pdev);
pci_write_config_byte(dev->pdev, LBB, dev_priv->saveLBB);