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| author | Sebastian Ott <sebott@linux.ibm.com> | 2018-12-21 17:14:19 +0300 |
|---|---|---|
| committer | Bjorn Helgaas <bhelgaas@google.com> | 2019-01-02 04:04:37 +0300 |
| commit | aff68a5a621e2569d126b817d0d42f658df524bf (patch) | |
| tree | 25493ee845607f4de46651739fcc8b31896ae9fc | |
| parent | 18f9e9d150fccfa747875df6f0a9f606740762b3 (diff) | |
| download | linux-aff68a5a621e2569d126b817d0d42f658df524bf.tar.xz | |
PCI/IOV: Add flag so platforms can skip VF scanning
Provide a flag to skip scanning for new VFs after SR-IOV enablement. This
can be set by implementations for which the VFs are already reported by
other means.
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/pci/iov.c | 6 | ||||
| -rw-r--r-- | include/linux/pci.h | 1 |
2 files changed, 7 insertions, 0 deletions
diff --git a/drivers/pci/iov.c b/drivers/pci/iov.c index 408db232a328..3aa115ed3a65 100644 --- a/drivers/pci/iov.c +++ b/drivers/pci/iov.c @@ -257,6 +257,9 @@ static int sriov_add_vfs(struct pci_dev *dev, u16 num_vfs) unsigned int i; int rc; + if (dev->no_vf_scan) + return 0; + for (i = 0; i < num_vfs; i++) { rc = pci_iov_add_virtfn(dev, i); if (rc) @@ -385,6 +388,9 @@ static void sriov_del_vfs(struct pci_dev *dev) struct pci_sriov *iov = dev->sriov; int i; + if (dev->no_vf_scan) + return; + for (i = 0; i < iov->num_VFs; i++) pci_iov_remove_virtfn(dev, i); } diff --git a/include/linux/pci.h b/include/linux/pci.h index 11c71c4ecf75..f9bc7651c406 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -405,6 +405,7 @@ struct pci_dev { unsigned int non_compliant_bars:1; /* Broken BARs; ignore them */ unsigned int is_probed:1; /* Device probing in progress */ unsigned int link_active_reporting:1;/* Device capable of reporting link active */ + unsigned int no_vf_scan:1; /* Don't scan for VFs after IOV enablement */ pci_dev_flags_t dev_flags; atomic_t enable_cnt; /* pci_enable_device has been called */ |