linux-kernel - [PATCH 4/4] x86: Move pci_iommu_init to rootfs

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Message-Id: <1255349181.10605.11.camel@macbook.infradead.org>
Date:	Mon, 12 Oct 2009 13:06:21 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	"Rafael J.Wysocki" <rjw@...k.pl>,
	Greg Kroah-Hartman <gregkh@...e.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Adrian Bunk <bunk@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Natalie Protasevich <protasnb@...il.com>
Subject: [PATCH 4/4] x86: Move pci_iommu_init to rootfs_initcall()

We want this to happen after the PCI quirks, which are now running at
the very end of the fs_initcalls.

This works around the BIOS problems which were originally addressed by
commit db8be50c4307dac2b37305fc59c8dc0f978d09ea ('USB: Work around BIOS
bugs by quiescing USB controllers earlier'), which was reverted in
commit d93a8f829fe1d2f3002f2c6ddb553d12db420412.

Signed-off-by: David Woodhouse <David.Woodhouse@...el.com>
---
 arch/x86/kernel/pci-dma.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kernel/pci-dma.c b/arch/x86/kernel/pci-dma.c
index d20009b..b2a71dc 100644
--- a/arch/x86/kernel/pci-dma.c
+++ b/arch/x86/kernel/pci-dma.c
@@ -311,7 +311,7 @@ void pci_iommu_shutdown(void)
 	amd_iommu_shutdown();
 }
 /* Must execute after PCI subsystem */
-fs_initcall(pci_iommu_init);
+rootfs_initcall(pci_iommu_init);
 
 #ifdef CONFIG_PCI
 /* Many VIA bridges seem to corrupt data for DAC. Disable it here */
-- 
1.6.5.rc2


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