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    Subject[PATCH AUTOSEL 4.9 96/99] PCI: keystone: Use quirk to limit MRRS for K2G
    Date
    From: Kishon Vijay Abraham I <kishon@ti.com>

    [ Upstream commit 148e340c0696369fadbbddc8f4bef801ed247d71 ]

    PCI controller in K2G also has a limitation that memory read request
    size (MRRS) must not exceed 256 bytes. Use the quirk to limit MRRS
    (added for K2HK, K2L and K2E) for K2G as well.

    Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
    Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/pci/host/pci-keystone.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/pci/host/pci-keystone.c b/drivers/pci/host/pci-keystone.c
    index eac0a1238e9d0..c690299d5c4a8 100644
    --- a/drivers/pci/host/pci-keystone.c
    +++ b/drivers/pci/host/pci-keystone.c
    @@ -43,6 +43,7 @@
    #define PCIE_RC_K2HK 0xb008
    #define PCIE_RC_K2E 0xb009
    #define PCIE_RC_K2L 0xb00a
    +#define PCIE_RC_K2G 0xb00b

    #define to_keystone_pcie(x) container_of(x, struct keystone_pcie, pp)

    @@ -57,6 +58,8 @@ static void quirk_limit_mrrs(struct pci_dev *dev)
    .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, },
    { PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2L),
    .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, },
    + { PCI_DEVICE(PCI_VENDOR_ID_TI, PCIE_RC_K2G),
    + .class = PCI_CLASS_BRIDGE_PCI << 8, .class_mask = ~0, },
    { 0, },
    };

    --
    2.20.1
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