From: Feng Kan <fkan@apm.com>
To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org,
bhelgaas@google.com, alex.williamson@redhat.com
Cc: Feng Kan <fkan@apm.com>
Subject: [PATCH] pci: quirk: Apply APM ACS quirk to XGene devices
Date: Mon, 17 Jul 2017 17:45:52 -0700 [thread overview]
Message-ID: <1500338752-30576-1-git-send-email-fkan@apm.com> (raw)
The APM X-Gene PCIe root port does not support ACS at this point.
Since the root does not allow peer to peer transactions, mask out
ACS capability flag bits.
Signed-off-by: Feng Kan <fkan@apm.com>
---
drivers/pci/quirks.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 085fb78..951064d 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4368,6 +4368,8 @@ static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
{ 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */
/* Cavium ThunderX */
{ PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },
+ /* APM XGene */
+ { PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_mf_endpoint_acs },
{ 0 }
};
--
1.8.3.1
next reply other threads:[~2017-07-18 0:45 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-18 0:45 Feng Kan [this message]
2017-07-18 2:23 ` [PATCH] pci: quirk: Apply APM ACS quirk to XGene devices Alex Williamson
2017-07-18 17:42 ` Feng Kan
2017-07-18 18:16 ` Alex Williamson
2017-07-19 5:37 ` Feng Kan
2017-07-20 22:19 ` Alex Williamson
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