From 44c10138fd4bbc4b6d6bff0873c24902f2a9da65 Mon Sep 17 00:00:00 2001 From: Auke Kok Date: Fri, 8 Jun 2007 15:46:36 -0700 Subject: PCI: Change all drivers to use pci_device->revision Instead of all drivers reading pci config space to get the revision ID, they can now use the pci_device->revision member. This exposes some issues where drivers where reading a word or a dword for the revision number, and adding useless error-handling around the read. Some drivers even just read it for no purpose of all. In devices where the revision ID is being copied over and used in what appears to be the equivalent of hotpath, I have left the copy code and the cached copy as not to influence the driver's performance. Compile tested with make all{yes,mod}config on x86_64 and i386. Signed-off-by: Auke Kok Acked-by: Dave Jones Signed-off-by: Greg Kroah-Hartman --- arch/i386/pci/fixup.c | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) (limited to 'arch/i386/pci') diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c index b95b42950ed..e7306dbf6c4 100644 --- a/arch/i386/pci/fixup.c +++ b/arch/i386/pci/fixup.c @@ -118,12 +118,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, pci static void pci_fixup_via_northbridge_bug(struct pci_dev *d) { u8 v; - u8 revision; int where = 0x55; int mask = 0x1f; /* clear bits 5, 6, 7 by default */ - pci_read_config_byte(d, PCI_REVISION_ID, &revision); - if (d->device == PCI_DEVICE_ID_VIA_8367_0) { /* fix pci bus latency issues resulted by NB bios error it appears on bug free^Wreduced kt266x's bios forces @@ -133,8 +130,8 @@ static void pci_fixup_via_northbridge_bug(struct pci_dev *d) where = 0x95; /* the memory write queue timer register is different for the KT266x's: 0x95 not 0x55 */ } else if (d->device == PCI_DEVICE_ID_VIA_8363_0 && - (revision == VIA_8363_KL133_REVISION_ID || - revision == VIA_8363_KM133_REVISION_ID)) { + (d->revision == VIA_8363_KL133_REVISION_ID || + d->revision == VIA_8363_KM133_REVISION_ID)) { mask = 0x3f; /* clear only bits 6 and 7; clearing bit 5 causes screen corruption on the KL133/KM133 */ } @@ -142,7 +139,7 @@ static void pci_fixup_via_northbridge_bug(struct pci_dev *d) pci_read_config_byte(d, where, &v); if (v & ~mask) { printk(KERN_WARNING "Disabling VIA memory write queue (PCI ID %04x, rev %02x): [%02x] %02x & %02x -> %02x\n", \ - d->device, revision, where, v, mask, v & mask); + d->device, d->revision, where, v, mask, v & mask); v &= mask; pci_write_config_byte(d, where, v); } -- cgit v1.2.3