2020-04-10 02:47:05 +00:00
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From 852d91023cc24663e6b3b0707e98a189a7b1de87 Mon Sep 17 00:00:00 2001
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From: Andy Duan <fugang.duan@nxp.com>
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Date: Wed, 2 Jan 2019 17:55:44 +0800
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Subject: [PATCH] MLK-20684 PCI: Disable MSI on CYW4356 and CYW4359 chips
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MSI is broken on CYW4356/4359 chips. This causes CYW4356 1CX not
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work on i.MX8x platforms with bandwidth test. It is known issue
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that i.MX8x PCIe host driver MSI interrupt lost.
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Disable MSI completely for this chipset to let wifi can stable work
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until PCIe RC driver fix the issue.
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Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
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Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
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(cherry picked from commit d99766187fb99d4a6655a1e0fdf5dc9451a8e4a0)
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---
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drivers/pci/quirks.c | 2 ++
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1 file changed, 2 insertions(+)
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--- a/drivers/pci/quirks.c
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+++ b/drivers/pci/quirks.c
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2020-05-11 11:17:22 +00:00
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@@ -2510,6 +2510,8 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VI
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2020-04-10 02:47:05 +00:00
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_VT3364, quirk_disable_all_msi);
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8380_0, quirk_disable_all_msi);
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DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SI, 0x0761, quirk_disable_all_msi);
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ec, quirk_disable_all_msi);
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+DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_BROADCOM, 0x43ef, quirk_disable_all_msi);
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/* Disable MSI on chipsets that are known to not support it */
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static void quirk_disable_msi(struct pci_dev *dev)
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