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i915: fix AR register restore.

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Make sure the restoration correctly restores the AR registers by
flipping the ARX register into index mode before doing anything.

Without this, some people have had the text mode restore all green.

Signed-off-by: Jesse Barnes <jesse.barnes@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jesse Barnes 2008-02-21 17:44:35 -08:00 committed by Linus Torvalds
parent 2f93d797ea
commit 39273b58a4
1 changed files with 1 additions and 0 deletions
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1
drivers/char/drm/i915_drv.c
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@ -222,6 +222,7 @@ static void i915_restore_vga(struct drm_device *dev)
dev_priv->saveGR[0x18]);
/* Attribute controller registers */
inb(st01);
for (i = 0; i < 20; i++)
i915_write_ar(st01, i, dev_priv->saveAR[i], 0);
inb(st01); /* switch back to index mode */