From bee0bdd8d8f4e67ad3e960844f26edc3bd5eca99 Mon Sep 17 00:00:00 2001 From: Andy Duan <fugang.duan@nxp.com> Date: Wed, 2 Jan 2019 17:55:44 +0800 Subject: [PATCH] MLK-20684 PCI: Disable MSI on CYW4356 and CYW4359 chips MSI is broken on CYW4356/4359 chips. This causes CYW4356 1CX not work on i.MX8x platforms with bandwidth test. It is known issue that i.MX8x PCIe host driver MSI interrupt lost. Disable MSI completely for this chipset to let wifi can stable work until PCIe RC driver fix the issue. Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com> Signed-off-by: Fugang Duan <fugang.duan@nxp.com> (cherry picked from commit d99766187fb99d4a6655a1e0fdf5dc9451a8e4a0) --- drivers/pci/quirks.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index f70692ac79c565..2dd019595839fc 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -2522,6 +2522,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3351, quirk_disab DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ec, quirk_disable_all_msi); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ef, quirk_disable_all_msi); /* Disable MSI on chipsets that are known to not support it */ static void quirk_disable_msi(struct pci_dev *dev) -- GitLab