From b77d537d00d08fcf0bf641cd3491dd7df0ad1475 Mon Sep 17 00:00:00 2001 From: Manish Jaggi Date: Thu, 30 Mar 2017 18:47:14 -0500 Subject: [PATCH] PCI: Apply Cavium ACS quirk only to CN81xx/CN83xx/CN88xx devices Only apply the Cavium ACS quirk to devices with ID in the range 0xa000-0xa0ff. These are the on-chip PCI devices for CN81xx/CN83xx/CN88xx. Fixes: b404bcfbf035 ("PCI: Add ACS quirk for all Cavium devices") Reported-by: Alex Williamson Signed-off-by: Manish Jaggi Acked-by: David Daney Acked-by: Alex Williamson --- drivers/pci/quirks.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index f754453fe754..178242d0d9df 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -4094,6 +4094,9 @@ static int pci_quirk_cavium_acs(struct pci_dev *dev, u16 acs_flags) acs_flags &= ~(PCI_ACS_SV | PCI_ACS_TB | PCI_ACS_RR | PCI_ACS_CR | PCI_ACS_UF | PCI_ACS_DT); + if (!((dev->device >= 0xa000) && (dev->device <= 0xa0ff))) + return -ENOTTY; + return acs_flags ? 0 : 1; }