linux-kernel - [PATCH] Re: Sleep problems with kernels >= 2.6.21 on powerpc

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Message-ID: <tkrat.7174534bdd0ddaff@s5r6.in-berlin.de>
Date:	Wed, 5 Sep 2007 20:06:50 +0200 (CEST)
From:	Stefan Richter <stefanr@...6.in-berlin.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
cc:	Tim Teulings <rael@...e.ping.de>, michal.k.k.piotrowski@...il.com,
	rbrito@...il.com, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, debian-powerpc@...ts.debian.org,
	rjw@...k.pl, linux-pm@...ts.linux-foundation.org,
	Kristian Høgsberg <krh@...hat.com>
Subject: [PATCH] Re: Sleep problems with kernels >= 2.6.21 on powerpc

From: Stefan Richter <stefanr@...6.in-berlin.de>
Subject: firewire: fw-ohci: ignore failure of pci_set_power_state (fix suspend regression)

Fixes "Sleep problems with kernels >= 2.6.21 on powerpc",
http://lkml.org/lkml/2007/8/25/155.

Like it was suggested earlier in http://lkml.org/lkml/2006/10/24/13,
we do *not* fail .suspend anymore if pci_set_power_state failed.

Signed-off-by: Stefan Richter <stefanr@...6.in-berlin.de>
---
 drivers/firewire/fw-ohci.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

Index: linux-2.6.23-rc4/drivers/firewire/fw-ohci.c
===================================================================
--- linux-2.6.23-rc4.orig/drivers/firewire/fw-ohci.c
+++ linux-2.6.23-rc4/drivers/firewire/fw-ohci.c
@@ -1946,8 +1946,11 @@ static int pci_suspend(struct pci_dev *p
 	}
 	err = pci_set_power_state(pdev, pci_choose_state(pdev, state));
 	if (err) {
+		/*
+		 * Some Apple onboard controllers are known to fail here.
+		 * Ignore it and let the machine proceed to suspend.
+		 */
 		fw_error("pci_set_power_state failed\n");
-		return err;
 	}
 
 	return 0;

-- 
Stefan Richter
-=====-=-=== =--= --=-=
http://arcgraph.de/sr/

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