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pcie_aer: Don't trigger a LSI if none are defined

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Skip triggering an LSI when the AER root error status is updated if no
LSI is defined for the device. We can have a root bridge with no LSI,
MSI and MSI-X defined, for example on POWER systems.

Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
Message-Id: <20211116170133.724751-4-fbarrat@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
This commit is contained in:
Frederic Barrat 2021-11-16 18:01:33 +01:00 • committed by Michael S. Tsirkin
parent 2fedf46e34
commit 20766514d6
1 changed files with 3 additions and 1 deletions
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2
hw/pci/pcie_aer.c
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@ -774,7 +774,9 @@ void pcie_aer_root_write_config(PCIDevice *dev,
uint32_t root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND); uint32_t root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND);
/* 6.2.4.1.2 Interrupt Generation */ /* 6.2.4.1.2 Interrupt Generation */
if (!msix_enabled(dev) && !msi_enabled(dev)) { if (!msix_enabled(dev) && !msi_enabled(dev)) {
if (pci_intx(dev) != -1) {
pci_set_irq(dev, !!(root_cmd & enabled_cmd)); pci_set_irq(dev, !!(root_cmd & enabled_cmd));
}
return; return;
} }