diff options
| -rw-r--r-- | drivers/nvme/target/pci-epf.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/nvme/target/pci-epf.c b/drivers/nvme/target/pci-epf.c index d5442991f2fbd..bde7818c673d8 100644 --- a/drivers/nvme/target/pci-epf.c +++ b/drivers/nvme/target/pci-epf.c @@ -636,14 +636,16 @@ static void nvmet_pci_epf_raise_irq(struct nvmet_pci_epf_ctrl *ctrl, switch (nvme_epf->irq_type) { case PCI_IRQ_MSIX: case PCI_IRQ_MSI: + /* + * If we fail to raise an MSI or MSI-X interrupt, it is likely + * because the host is using legacy INTX IRQs (e.g. BIOS, + * grub), but we can fallback to the INTX type only if the + * endpoint controller supports this type. + */ ret = pci_epc_raise_irq(epf->epc, epf->func_no, epf->vfunc_no, nvme_epf->irq_type, cq->vector + 1); - if (!ret) + if (!ret || !nvme_epf->epc_features->intx_capable) break; - /* - * If we got an error, it is likely because the host is using - * legacy IRQs (e.g. BIOS, grub). - */ fallthrough; case PCI_IRQ_INTX: ret = pci_epc_raise_irq(epf->epc, epf->func_no, epf->vfunc_no, |