From 4b95320fc4d21b0ff2f8604305dd6c851aff6096 Mon Sep 17 00:00:00 2001 From: Wang Zhenyu Date: Wed, 17 Jan 2007 11:07:54 +0800 Subject: [PATCH] [AGPGART] intel_agp: restore graphics device's pci space early in resume Currently in resuming path graphics device's pci space restore is behind host bridge, so resume function wrongly accesses graphics device's space. This makes resuming failure which crashed X. here's a patch to restore device's pci space early, which makes resuming ok with X. Signed-off-by: Wang Zhenyu Signed-off-by: Dave Jones --- drivers/char/agp/intel-agp.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c index ab0a9c0ad7c..a3011de51f7 100644 --- a/drivers/char/agp/intel-agp.c +++ b/drivers/char/agp/intel-agp.c @@ -1955,6 +1955,15 @@ static int agp_intel_resume(struct pci_dev *pdev) pci_restore_state(pdev); + /* We should restore our graphics device's config space, + * as host bridge (00:00) resumes before graphics device (02:00), + * then our access to its pci space can work right. + */ + if (intel_i810_private.i810_dev) + pci_restore_state(intel_i810_private.i810_dev); + if (intel_i830_private.i830_dev) + pci_restore_state(intel_i830_private.i830_dev); + if (bridge->driver == &intel_generic_driver) intel_configure(); else if (bridge->driver == &intel_850_driver) -- 2.41.0