linux-kernel - [PATCH] PCI: Add HXT vendor ID and ACS quirk

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Date:   Mon, 5 Nov 2018 11:15:59 +0800
From:   Shunyong Yang <shunyong.yang@...-semitech.com>
To:     <bhelgaas@...gle.com>
CC:     <linux-pci@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <okaya@...eaurora.org>,
        Shunyong Yang <shunyong.yang@...-semitech.com>,
        Joey Zheng <yu.zheng@...-semitech.com>
Subject: [PATCH] PCI: Add HXT vendor ID and ACS quirk

Add the HXT vendor ID to pci_ids.h and use it in quirks. As the
design of HXT SD4800 ACS feature is the same as QCOM QDF2xxx,
pci_quirk_qcom_rp_acs() is reused for SD4800 quirk.

Cc: Joey Zheng <yu.zheng@...-semitech.com>
Signed-off-by: Shunyong Yang <shunyong.yang@...-semitech.com>
---
 drivers/pci/quirks.c    | 2 ++
 include/linux/pci_ids.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 4700d24e5d55..1e00ef6a88f4 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -4495,6 +4495,8 @@ static int pci_quirk_mf_endpoint_acs(struct pci_dev *dev, u16 acs_flags)
 	/* QCOM QDF2xxx root ports */
 	{ PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
 	{ PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
+	/* HXT SD4800 root ports. The ACS design is same as QCOM QDF2xxx */
+	{ PCI_VENDOR_ID_HXT, 0x0401, pci_quirk_qcom_rp_acs },
 	/* Intel PCH root ports */
 	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_pch_acs },
 	{ PCI_VENDOR_ID_INTEL, PCI_ANY_ID, pci_quirk_intel_spt_pch_acs },
diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h
index f4e278493f5b..e3d7efb1442f 100644
--- a/include/linux/pci_ids.h
+++ b/include/linux/pci_ids.h
@@ -2559,6 +2559,8 @@
 
 #define PCI_VENDOR_ID_AMAZON		0x1d0f
 
+#define PCI_VENDOR_ID_HXT		0x1dbf
+
 #define PCI_VENDOR_ID_TEKRAM		0x1de1
 #define PCI_DEVICE_ID_TEKRAM_DC290	0xdc29
 
-- 
1.8.3.1