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MLK-24993 pci: quirks: disable dwc root port MSI for i.MX8QM series

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i.MX8QM series MSI also break wireless function and suspend/resume
case since there have MSI interrupt lost. So keep previous behavior
that disable wireless MSI for i.MX8QM series.

Fixes: 6644cc2f3b ("MLK-24939 PCI: only disable MSI for i.MX8 dwc root port")
Reviewed-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Fugang Duan <fugang.duan@nxp.com>
This commit is contained in:
Fugang Duan 2020-11-11 12:54:23 +08:00
parent b98875a9d3
commit 0cd0008697
1 changed files with 14 additions and 3 deletions
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17
drivers/pci/quirks.c
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@ -2522,14 +2522,25 @@ static void quirk_disable_all_msi(struct pci_dev *dev)
static void quirk_disable_nxp_imx_msi(struct pci_dev *dev)
{
struct pci_dev *host_bridge;
bool msi_dis = false;
host_bridge = pci_get_domain_bus_and_slot(pci_domain_nr(dev->bus), 0,
PCI_DEVFN(0, 0));
if (host_bridge) {
if (host_bridge->vendor == PCI_VENDOR_ID_SYNOPSYS &&
host_bridge->device == 0xabcd)
pci_no_msi();
switch (host_bridge->vendor) {
case PCI_VENDOR_ID_SYNOPSYS:
if (host_bridge->device == 0xabcd)
msi_dis = true;
break;
case PCI_VENDOR_ID_FREESCALE:
if (host_bridge->device == 0x0)
msi_dis = true;
default:
break;
}
if (msi_dis)
pci_no_msi();
pci_dev_put(host_bridge);
}
}