From: Kumar Gala <galak@kernel.crashing.org>
Date: Wed, 25 Jul 2007 05:44:11 +0000 (-0500)
Subject: [POWERPC] Don't try to allocate resources for a Freescale POWERPC PHB
X-Git-Tag: v2.6.23-rc2~190^2^2~6
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2052d6d25decc04dc05beb99348b3d78f6e3490d;p=linux-2.6

[POWERPC] Don't try to allocate resources for a Freescale POWERPC PHB

The Freescale PCI PHBs actual report back values in the BAR registers
this causes issues in that we try to allocate resources for them
and will get error messages like the following on MPC8544 DS:

PCI: Failed to allocate mem resource #1:80000000@0 for 0000:00:00.0

To address this if we are class PCI_CLASS_PROCESSOR_POWERPC, a normal
header type, and the PHB we clear out all the resources.

Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
---

diff --git a/arch/powerpc/kernel/pci_32.c b/arch/powerpc/kernel/pci_32.c
index 721a69400d..395086f632 100644
--- a/arch/powerpc/kernel/pci_32.c
+++ b/arch/powerpc/kernel/pci_32.c
@@ -59,6 +59,24 @@ LIST_HEAD(hose_list);
 
 static int pci_bus_count;
 
+static void
+fixup_hide_host_resource_fsl(struct pci_dev* dev)
+{
+	int i, class = dev->class >> 8;
+
+	if ((class == PCI_CLASS_PROCESSOR_POWERPC) &&
+		(dev->hdr_type == PCI_HEADER_TYPE_NORMAL) &&
+		(dev->bus->parent == NULL)) {
+		for (i = 0; i < DEVICE_COUNT_RESOURCE; i++) {
+			dev->resource[i].start = 0;
+			dev->resource[i].end = 0;
+			dev->resource[i].flags = 0;
+		}
+	}
+}
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MOTOROLA, PCI_ANY_ID, fixup_hide_host_resource_fsl); 
+DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_FREESCALE, PCI_ANY_ID, fixup_hide_host_resource_fsl); 
+
 static void
 fixup_broken_pcnet32(struct pci_dev* dev)
 {