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[PATCH 3/3] pcie_aer: Don't trigger a LSI if none are defined
From: |
Frederic Barrat |
Subject: |
[PATCH 3/3] pcie_aer: Don't trigger a LSI if none are defined |
Date: |
Tue, 16 Nov 2021 18:01:33 +0100 |
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>
---
hw/pci/pcie_aer.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/hw/pci/pcie_aer.c b/hw/pci/pcie_aer.c
index 27f9cc56af..e1a8a88c8c 100644
--- a/hw/pci/pcie_aer.c
+++ b/hw/pci/pcie_aer.c
@@ -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);
/* 6.2.4.1.2 Interrupt Generation */
if (!msix_enabled(dev) && !msi_enabled(dev)) {
- pci_set_irq(dev, !!(root_cmd & enabled_cmd));
+ if (pci_intx(dev) != -1) {
+ pci_set_irq(dev, !!(root_cmd & enabled_cmd));
+ }
return;
}
--
2.33.1