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Subject[pci PATCH v7 4/5] 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_simple function.

Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
---

v5: Replaced call to pci_sriov_configure_unmanaged with
pci_sriov_configure_simple
v6: Dropped "#ifdef" checks for IOV wrapping sriov_configure definition
v7: No code change, added Reviewed-by

drivers/nvme/host/pci.c | 20 +-------------------
1 file changed, 1 insertion(+), 19 deletions(-)

diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index 5933a5c732e8..5e963058882a 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -2580,24 +2580,6 @@ 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)
{
@@ -2716,7 +2698,7 @@ static void nvme_error_resume(struct pci_dev *pdev)
.driver = {
.pm = &nvme_dev_pm_ops,
},
- .sriov_configure = nvme_pci_sriov_configure,
+ .sriov_configure = pci_sriov_configure_simple,
.err_handler = &nvme_err_handler,
};

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