2020-04-10 02:47:05 +00:00
|
|
|
From 852d91023cc24663e6b3b0707e98a189a7b1de87 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(+)
|
|
|
|
|
|
|
|
|
|
--- a/drivers/pci/quirks.c
|
|
|
|
|
+++ b/drivers/pci/quirks.c
|
2021-08-26 18:09:35 +00:00
|
|
|
@@ -2525,6 +2525,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VI
|
2020-04-10 02:47:05 +00:00
|
|
|
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)
|
