linux-kernel - [PATCH] PCI: Add ACS quirk for Qualcomm Hamoa & Glymur

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Message-Id: <20260109-acs_quirk-v1-1-82adf95a89ae@oss.qualcomm.com>
Date: Fri, 09 Jan 2026 13:53:32 +0530
From: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
To: Bjorn Helgaas <bhelgaas@...gle.com>
Cc: linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org, mani@...nel.org,
        Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
Subject: [PATCH] PCI: Add ACS quirk for Qualcomm Hamoa & Glymur

The Qualcomm Hamoa & Glymur root ports don't advertise an ACS capability,
but they do provide ACS-like features to disable peer transactions and
validate bus numbers in requests.

So add an ACS quirk for Hamoa & Glymur.

Signed-off-by: Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>
---
 drivers/pci/quirks.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index b9c252aa6fe08a864cebe245f5dd7bf41fcc5116..75dee46f474a643cc79d112df1f5a57a9f6b95b1 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5107,6 +5107,10 @@ static const struct pci_dev_acs_enabled {
 	{ PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
 	/* QCOM SA8775P root port */
 	{ PCI_VENDOR_ID_QCOM, 0x0115, pci_quirk_qcom_rp_acs },
+	/* QCOM Hamoa root port */
+	{ PCI_VENDOR_ID_QCOM, 0x0111, pci_quirk_qcom_rp_acs },
+	/* QCOM Glymur root port */
+	{ PCI_VENDOR_ID_QCOM, 0x0120, 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 */

---
base-commit: 623fb9912f6af600cda3b6bd166ac738c1115ef4
change-id: 20260109-acs_quirk-0f8e83dc945e

Best regards,
-- 
Krishna Chaitanya Chundru <krishna.chundru@....qualcomm.com>