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Message-ID: <20241004181828.3669209-27-sashal@kernel.org>
Date: Fri,  4 Oct 2024 14:16:44 -0400
From: Sasha Levin <sashal@...nel.org>
To: linux-kernel@...r.kernel.org,
	stable@...r.kernel.org
Cc: Subramanian Ananthanarayanan <quic_skananth@...cinc.com>,
	Krzysztof Wilczyński <kwilczynski@...nel.org>,
	Sasha Levin <sashal@...nel.org>,
	bhelgaas@...gle.com,
	linux-pci@...r.kernel.org
Subject: [PATCH AUTOSEL 6.11 27/76] PCI: Add ACS quirk for Qualcomm SA8775P

From: Subramanian Ananthanarayanan <quic_skananth@...cinc.com>

[ Upstream commit 026f84d3fa62d215b11cbeb5a5d97df941e93b5c ]

The Qualcomm SA8775P 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.

Thus, add an ACS quirk for the SA8775P.

Link: https://lore.kernel.org/linux-pci/20240906052228.1829485-1-quic_skananth@quicinc.com
Signed-off-by: Subramanian Ananthanarayanan <quic_skananth@...cinc.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/pci/quirks.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index cc6c82c3bd3d0..8502f8a27f239 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5074,6 +5074,8 @@ static const struct pci_dev_acs_enabled {
 	/* QCOM QDF2xxx root ports */
 	{ PCI_VENDOR_ID_QCOM, 0x0400, pci_quirk_qcom_rp_acs },
 	{ PCI_VENDOR_ID_QCOM, 0x0401, pci_quirk_qcom_rp_acs },
+	/* QCOM SA8775P root port */
+	{ PCI_VENDOR_ID_QCOM, 0x0115, 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 */
-- 
2.43.0


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