From bcf988a19458f08950551f66c110e41fac452b2b Mon Sep 17 00:00:00 2001 From: Benjamin Herrenschmidt Date: Thu, 20 Dec 2007 14:55:00 +1100 Subject: [PATCH] [POWERPC] Various fixes to pcibios_enable_device() Our implementation of pcibios_enable_device() has a couple of problems. One is that it should not check IORESOURCE_UNSET, as this might be left dangling after resource assignment (shouldn't but there are bugs), but instead, we make it check resource->parent which should be a reliable indication that the resource has been successfully claimed (it's in the resource tree). Then, we also need to skip ROM resources that haven't been enabled as x86 does. Signed-off-by: Benjamin Herrenschmidt Signed-off-by: Paul Mackerras --- arch/powerpc/kernel/pci-common.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c index 8935661d12d0..b6d4767e4e27 100644 --- a/arch/powerpc/kernel/pci-common.c +++ b/arch/powerpc/kernel/pci-common.c @@ -1147,7 +1147,10 @@ int pcibios_enable_device(struct pci_dev *dev, int mask) r = &dev->resource[idx]; if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) continue; - if (r->flags & IORESOURCE_UNSET) { + if ((idx == PCI_ROM_RESOURCE) && + (!(r->flags & IORESOURCE_ROM_ENABLE))) + continue; + if (r->parent == NULL) { printk(KERN_ERR "PCI: Device %s not available because" " of resource collisions\n", pci_name(dev)); return -EINVAL;