linux-kernel - [PATCH 1/3] agp/intel: remove restore in resume

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Message-Id: <1252028615-13785-1-git-send-email-zhenyuw@linux.intel.com>
Date:	Fri,  4 Sep 2009 09:43:34 +0800
From:	Zhenyu Wang <zhenyuw@...ux.intel.com>
To:	intel-gfx@...ts.freedesktop.org
Cc:	linux-kernel@...r.kernel.org,
	Zhenyu Wang <zhenyuw@...ux.intel.com>,
	Stable Team <stable@...nel.org>,
	Alan Stern <stern@...land.harvard.edu>
Subject: [PATCH 1/3] agp/intel: remove restore in resume

As early pci resume has already restored config for host
bridge and graphics device, don't need to restore it again,
which might cause problem on some chips, like 845G tested by
Alan Stern.

Cc: Stable Team <stable@...nel.org>
Cc: Alan Stern <stern@...land.harvard.edu>
Signed-off-by: Zhenyu Wang <zhenyuw@...ux.intel.com>
---
 drivers/char/agp/intel-agp.c |    9 ---------
 1 files changed, 0 insertions(+), 9 deletions(-)

diff --git a/drivers/char/agp/intel-agp.c b/drivers/char/agp/intel-agp.c
index c585577..dee0f1f 100644
--- a/drivers/char/agp/intel-agp.c
+++ b/drivers/char/agp/intel-agp.c
@@ -2313,15 +2313,6 @@ static int agp_intel_resume(struct pci_dev *pdev)
 	struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
 	int ret_val;
 
-	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_private.pcidev)
-		pci_restore_state(intel_private.pcidev);
-
 	if (bridge->driver == &intel_generic_driver)
 		intel_configure();
 	else if (bridge->driver == &intel_850_driver)
-- 
1.6.3.3

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