From: Subramanian Ananthanarayanan quic_skananth@quicinc.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@qui... Signed-off-by: Subramanian Ananthanarayanan quic_skananth@quicinc.com Signed-off-by: Krzysztof Wilczyński kwilczynski@kernel.org Signed-off-by: Sasha Levin sashal@kernel.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 */