diff options
| -rw-r--r-- | drivers/nvme/host/pci.c | 25 |
1 files changed, 15 insertions, 10 deletions
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index 660ec84bc40f..4fd733ff72b1 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -1478,8 +1478,7 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) if (result > 0) { dev_err(dev->ctrl.device, "Could not set queue count (%d)\n", result); - nr_io_queues = 0; - result = 0; + return 0; } if (dev->cmb && NVME_CMB_SQS(dev->cmbsz)) { @@ -1513,7 +1512,9 @@ static int nvme_setup_io_queues(struct nvme_dev *dev) * If we enable msix early due to not intx, disable it again before * setting up the full range we need. */ - if (!pdev->irq) + if (pdev->msi_enabled) + pci_disable_msi(pdev); + else if (pdev->msix_enabled) pci_disable_msix(pdev); for (i = 0; i < nr_io_queues; i++) @@ -1696,7 +1697,6 @@ static int nvme_pci_enable(struct nvme_dev *dev) if (pci_enable_device_mem(pdev)) return result; - dev->entry[0].vector = pdev->irq; pci_set_master(pdev); if (dma_set_mask_and_coherent(dev->dev, DMA_BIT_MASK(64)) && @@ -1709,13 +1709,18 @@ static int nvme_pci_enable(struct nvme_dev *dev) } /* - * Some devices don't advertse INTx interrupts, pre-enable a single - * MSIX vec for setup. We'll adjust this later. + * Some devices and/or platforms don't advertise or work with INTx + * interrupts. Pre-enable a single MSIX or MSI vec for setup. We'll + * adjust this later. */ - if (!pdev->irq) { - result = pci_enable_msix(pdev, dev->entry, 1); - if (result < 0) - goto disable; + if (pci_enable_msix(pdev, dev->entry, 1)) { + pci_enable_msi(pdev); + dev->entry[0].vector = pdev->irq; + } + + if (!dev->entry[0].vector) { + result = -ENODEV; + goto disable; } cap = lo_hi_readq(dev->bar + NVME_REG_CAP); |