From bjorn.helgaas@hp.com Tue Mar 4 16:15:06 2008 From: Bjorn Helgaas Date: Tue, 04 Mar 2008 11:57:01 -0700 Subject: PCI: x86: use generic pci_enable_resources() To: linux-pci@atrey.karlin.mff.cuni.cz To: linux-arch@vger.kernel.org Cc: Russell King Cc: linux-arm-kernel@lists.arm.linux.org.uk Cc: Kyle McMartin Cc: Matthew Wilcox Cc: Grant Grundler Cc: linux-parisc@vger.kernel.org Cc: Paul Mackerras Cc: Benjamin Herrenschmidt Cc: linuxppc-dev@ozlabs.org Cc: Chris Zankel Message-ID: <20080304185822.741869974@ldl.fc.hp.com> Use the generic pci_enable_resources() instead of the arch-specific code. Unlike this arch-specific code, the generic version: - checks for resource collisions with "!r->parent" Signed-off-by: Bjorn Helgaas Signed-off-by: Greg Kroah-Hartman --- arch/x86/pci/common.c | 2 +- arch/x86/pci/i386.c | 38 -------------------------------------- arch/x86/pci/pci.h | 1 - 3 files changed, 1 insertion(+), 40 deletions(-) --- a/arch/x86/pci/common.c +++ b/arch/x86/pci/common.c @@ -466,7 +466,7 @@ int pcibios_enable_device(struct pci_dev { int err; - if ((err = pcibios_enable_resources(dev, mask)) < 0) + if ((err = pci_enable_resources(dev, mask)) < 0) return err; if (!dev->msi_enabled) --- a/arch/x86/pci/i386.c +++ b/arch/x86/pci/i386.c @@ -241,44 +241,6 @@ void __init pcibios_resource_survey(void */ fs_initcall(pcibios_assign_resources); -int pcibios_enable_resources(struct pci_dev *dev, int mask) -{ - u16 cmd, old_cmd; - int idx; - struct resource *r; - - pci_read_config_word(dev, PCI_COMMAND, &cmd); - old_cmd = cmd; - for (idx = 0; idx < PCI_NUM_RESOURCES; idx++) { - /* Only set up the requested stuff */ - if (!(mask & (1 << idx))) - continue; - - r = &dev->resource[idx]; - if (!(r->flags & (IORESOURCE_IO | IORESOURCE_MEM))) - continue; - if ((idx == PCI_ROM_RESOURCE) && - (!(r->flags & IORESOURCE_ROM_ENABLE))) - continue; - if (!r->start && r->end) { - printk(KERN_ERR "PCI: Device %s not available " - "because of resource %d collisions\n", - pci_name(dev), idx); - return -EINVAL; - } - if (r->flags & IORESOURCE_IO) - cmd |= PCI_COMMAND_IO; - if (r->flags & IORESOURCE_MEM) - cmd |= PCI_COMMAND_MEMORY; - } - if (cmd != old_cmd) { - printk("PCI: Enabling device %s (%04x -> %04x)\n", - pci_name(dev), old_cmd, cmd); - pci_write_config_word(dev, PCI_COMMAND, cmd); - } - return 0; -} - /* * If we set up a device for bus mastering, we need to check the latency * timer as certain crappy BIOSes forget to set it properly. --- a/arch/x86/pci/pci.h +++ b/arch/x86/pci/pci.h @@ -42,7 +42,6 @@ enum pci_bf_sort_state { extern unsigned int pcibios_max_latency; void pcibios_resource_survey(void); -int pcibios_enable_resources(struct pci_dev *, int); /* pci-pc.c */