Re: [PATCH 3/3] pcie_aer: Don't trigger a LSI if none are defined

[Cédric Le Goater]

On 11/16/21 18:01, Frederic Barrat wrote:

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 <fbar...@linux.ibm.com>
---

Reviewed-by: Cédric Le Goater <c...@kaod.org>

Thanks,

C.

  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;
      }