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PCI: Disable MSI for Pericom PCIe-USB adapter

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[ Upstream commit f83c37941e881224885f2e694e0626bea358e96b ]

Pericom PCIe-USB adapter advertises MSI, but documentation says "The MSI
Function is not implemented on this device" in chapters 7.3.27,
7.3.29-7.3.31, and Alberto found that MSI in fact does not work.

Disable MSI for these devices.

Datasheet: https://www.diodes.com/assets/Datasheets/PI7C9X440SL.pdf
Fixes: 306c54d0ed ("usb: hcd: Try MSI interrupts on PCI devices")
Link: https://lore.kernel.org/linux-usb/20201030134826.GP4077@smile.fi.intel.com/
Link: https://lore.kernel.org/r/20201106100526.17726-1-andriy.shevchenko@linux.intel.com
Reported-by: alberto.vignani@fastwebnet.it
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Andy Shevchenko 2020-11-06 12:05:25 +02:00 committed by Greg Kroah-Hartman
parent 6cf9c3f4df
commit ddf1dab291
1 changed files with 13 additions and 4 deletions
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17
drivers/pci/quirks.c
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@ -5567,17 +5567,26 @@ static void pci_fixup_no_d0_pme(struct pci_dev *dev)
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ASMEDIA, 0x2142, pci_fixup_no_d0_pme);
/* /*
* Device [12d8:0x400e] and [12d8:0x400f] * Device 12d8:0x400e [OHCI] and 12d8:0x400f [EHCI]
*
* These devices advertise PME# support in all power states but don't * These devices advertise PME# support in all power states but don't
* reliably assert it. * reliably assert it.
*
* These devices also advertise MSI, but documentation (PI7C9X440SL.pdf)
* says "The MSI Function is not implemented on this device" in chapters
* 7.3.27, 7.3.29-7.3.31.
*/ */
static void pci_fixup_no_pme(struct pci_dev *dev) static void pci_fixup_no_msi_no_pme(struct pci_dev *dev)
{ {
#ifdef CONFIG_PCI_MSI
pci_info(dev, "MSI is not implemented on this device, disabling it\n");
dev->no_msi = 1;
#endif
pci_info(dev, "PME# is unreliable, disabling it\n"); pci_info(dev, "PME# is unreliable, disabling it\n");
dev->pme_support = 0; dev->pme_support = 0;
} }
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_pme); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400e, pci_fixup_no_msi_no_pme);
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_pme); DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_PERICOM, 0x400f, pci_fixup_no_msi_no_pme);
static void apex_pci_fixup_class(struct pci_dev *pdev) static void apex_pci_fixup_class(struct pci_dev *pdev)
{ {