From 73a74ed3a6f8fcb817fdffa2c2718f96d0108b7f Mon Sep 17 00:00:00 2001 From: Ivan Kokshaysky Date: Wed, 23 May 2007 14:50:02 -0700 Subject: [PATCH] PCI: i386: fixup for Siemens Nixdorf AG FSC Multiprocessor Interrupt Controllers Wolfgang gets: PCI: Cannot allocate resource region 0 of device 0000:00:04.0 PCI: Error while updating region 0000:00:04.0/0 (a8008000 != fec08000) Note that the BAR seems to have high address bits hardwired to fec00000. And device 0000:00:04.0 is 00:04.0 System peripheral: Siemens Nixdorf AG FSC Multiprocessor Interrupt Controller (rev 02) I'd guess that when we try to reassign this resource, PCI interrupts might just stop working. This could explain SCSI timeouts and other weird things. Cc: Wolfgang Erig Cc: Chuck Ebbert Cc: Andi Kleen Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman --- arch/i386/pci/fixup.c | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/i386/pci/fixup.c b/arch/i386/pci/fixup.c index b62eafb997bc..b95b42950ed4 100644 --- a/arch/i386/pci/fixup.c +++ b/arch/i386/pci/fixup.c @@ -436,3 +436,14 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, pci_early_fixup_cyrix_5530); DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_CYRIX, PCI_DEVICE_ID_CYRIX_5530_LEGACY, pci_early_fixup_cyrix_5530); + +/* + * Siemens Nixdorf AG FSC Multiprocessor Interrupt Controller: + * prevent update of the BAR0, which doesn't look like a normal BAR. + */ +static void __devinit pci_siemens_interrupt_controller(struct pci_dev *dev) +{ + dev->resource[0].flags |= IORESOURCE_PCI_FIXED; +} +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_SIEMENS, 0x0015, + pci_siemens_interrupt_controller); -- 2.39.2