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Subject[pci PATCH v4 4/4] nvme: Migrate over to "unmanaged SR-IOV" support
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From: Alexander Duyck <alexander.h.duyck@intel.com>

Instead of implementing our own version of a SR-IOV configuration stub in
the nvme driver we can just reuse the existing
pci_sriov_configure_unmanaged function.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
---
drivers/nvme/host/pci.c | 22 +++-------------------
1 file changed, 3 insertions(+), 19 deletions(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 6fe7af00a1f4..2c753ccc1771 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2570,24 +2570,6 @@ static void nvme_remove(struct pci_dev *pdev)
nvme_put_ctrl(&dev->ctrl);
}

-static int nvme_pci_sriov_configure(struct pci_dev *pdev, int numvfs)
-{
- int ret = 0;
-
- if (numvfs == 0) {
- if (pci_vfs_assigned(pdev)) {
- dev_warn(&pdev->dev,
- "Cannot disable SR-IOV VFs while assigned\n");
- return -EPERM;
- }
- pci_disable_sriov(pdev);
- return 0;
- }
-
- ret = pci_enable_sriov(pdev, numvfs);
- return ret ? ret : numvfs;
-}
-
#ifdef CONFIG_PM_SLEEP
static int nvme_suspend(struct device *dev)
{
@@ -2706,7 +2688,9 @@ static void nvme_error_resume(struct pci_dev *pdev)
.driver = {
.pm = &nvme_dev_pm_ops,
},
- .sriov_configure = nvme_pci_sriov_configure,
+#ifdef CONFIG_PCI_IOV
+ .sriov_configure = pci_sriov_configure_unmanaged,
+#endif
.err_handler = &nvme_err_handler,
};

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