linux-kernel - [PATCH] pci: x86-32/64 switch to pci

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Message-Id: <1161013892.24237.100.camel@localhost.localdomain>
Date:	Mon, 16 Oct 2006 16:51:32 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	akpm@...l.org, linux-kernel@...r.kernel.org, ak@....de
Subject: [PATCH] pci: x86-32/64 switch to pci_get API

Use pci_get_bus_and_slot to find the router (and lock it for the kernel
lifetime), also use pci_get_device_reverse() to walk the list finding
calgary IOMMUs

Signed-off-by: Alan Cox <alan@...hat.com>

diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.19-rc1-mm1/arch/i386/pci/irq.c linux-2.6.19-rc1-mm1/arch/i386/pci/irq.c
--- linux.vanilla-2.6.19-rc1-mm1/arch/i386/pci/irq.c	2006-10-13 15:10:06.000000000 +0100
+++ linux-2.6.19-rc1-mm1/arch/i386/pci/irq.c	2006-10-13 17:14:40.000000000 +0100
@@ -758,7 +758,7 @@
 	DBG(KERN_DEBUG "PCI: Attempting to find IRQ router for %04x:%04x\n",
 	    rt->rtr_vendor, rt->rtr_device);
 
-	pirq_router_dev = pci_find_slot(rt->rtr_bus, rt->rtr_devfn);
+	pirq_router_dev = pci_get_bus_and_slot(rt->rtr_bus, rt->rtr_devfn);
 	if (!pirq_router_dev) {
 		DBG(KERN_DEBUG "PCI: Interrupt router not found at "
 			"%02x:%02x\n", rt->rtr_bus, rt->rtr_devfn);
@@ -778,6 +778,8 @@
 		pirq_router_dev->vendor,
 		pirq_router_dev->device,
 		pci_name(pirq_router_dev));
+		
+	/* The device remains referenced for the kernel lifetime */
 }
 
 static struct irq_info *pirq_get_info(struct pci_dev *dev)
diff -u --new-file --recursive --exclude-from /usr/src/exclude linux.vanilla-2.6.19-rc1-mm1/arch/x86_64/kernel/pci-calgary.c linux-2.6.19-rc1-mm1/arch/x86_64/kernel/pci-calgary.c
--- linux.vanilla-2.6.19-rc1-mm1/arch/x86_64/kernel/pci-calgary.c	2006-10-13 15:10:06.000000000 +0100
+++ linux-2.6.19-rc1-mm1/arch/x86_64/kernel/pci-calgary.c	2006-10-13 17:14:40.000000000 +0100
@@ -879,7 +879,7 @@
 
 error:
 	do {
-		dev = pci_find_device_reverse(PCI_VENDOR_ID_IBM,
+		dev = pci_get_device_reverse(PCI_VENDOR_ID_IBM,
 					      PCI_DEVICE_ID_IBM_CALGARY,
 					      dev);
 		if (!dev)

-
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