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[PATCH] pci: quirk cavium: Add device ID range check




 ACS quirk applies to devices with ID in the range a000-a0XX.
 The patch adds a check.This matches on-chip pci devices for
 CN81xx/CN83xx/CN88xx

 This patch adds check to
 b404bcfbf0 : PCI: Add ACS quirk for all Cavium devices

Signed-off-by: Manish Jaggi <mjaggi@xxxxxxxxxx>
Acked-by: David Daney <david.daney@xxxxxxxxxx>
---
 drivers/pci/quirks.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index f754453..178242d 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;
 }
--
2.7.4