43 lines
1.5 KiB
Diff
43 lines
1.5 KiB
Diff
From 77633ce67c1cff764fe4951a6837462f51ace8aa Mon Sep 17 00:00:00 2001
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From: boringandboring <wangjinlei_yewu@cmss.chinamobile.com>
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Date: Thu, 7 Dec 2023 17:00:28 +0800
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Subject: [PATCH] pcie_aer: Don't trigger a LSI if none are defined
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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cherry picked from 20766514d602c50b870ae943aaa8e5b9e2e8a161
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Skip triggering an LSI when the AER root error status is updated if no
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LSI is defined for the device. We can have a root bridge with no LSI,
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MSI and MSI-X defined, for example on POWER systems.
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Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com>
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Message-Id: <20211116170133.724751-4-fbarrat@linux.ibm.com>
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Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
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Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Reviewed-by: Cédric Le Goater <clg@kaod.org>
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Signed-off-by: boringandboring <wangjinlei_yewu@cmss.chinamobile.com>
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---
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hw/pci/pcie_aer.c | 4 +++-
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1 file changed, 3 insertions(+), 1 deletion(-)
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diff --git a/hw/pci/pcie_aer.c b/hw/pci/pcie_aer.c
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index 27f9cc56af..e1a8a88c8c 100644
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--- a/hw/pci/pcie_aer.c
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+++ b/hw/pci/pcie_aer.c
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@@ -774,7 +774,9 @@ void pcie_aer_root_write_config(PCIDevice *dev,
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uint32_t root_cmd = pci_get_long(aer_cap + PCI_ERR_ROOT_COMMAND);
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/* 6.2.4.1.2 Interrupt Generation */
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if (!msix_enabled(dev) && !msi_enabled(dev)) {
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- pci_set_irq(dev, !!(root_cmd & enabled_cmd));
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+ if (pci_intx(dev) != -1) {
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+ pci_set_irq(dev, !!(root_cmd & enabled_cmd));
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+ }
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return;
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}
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--
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2.27.0
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