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| author |   Niklas Schnelle <schnelle@linux.ibm.com> | 2020-04-27 16:25:27 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2020-05-20 10:22:50 +0200 |
| commit | a1ceea67f2e5b73cebd456e7fb463b3052bc6344 (patch) | |
| tree | 117a6da2754c21aec5306a2db9e1c7352286b611 /include/linux/pci.h | |
| parent | s390/qdio: add IRQ reduction for error SBALs (diff) | |
| download | wireguard-linux-a1ceea67f2e5b73cebd456e7fb463b3052bc6344.tar.xz wireguard-linux-a1ceea67f2e5b73cebd456e7fb463b3052bc6344.zip | |
PCI/IOV: Introduce pci_iov_sysfs_link() function
Currently pci_iov_add_virtfn() scans the SR-IOV BARs, adds the VF to the
bus and also creates the sysfs links between the newly added VF and its
parent PF.
With pdev->no_vf_scan fencing off the entire pci_iov_add_virtfn() call
s390 as the sole pdev->no_vf_scan user thus ends up missing these sysfs
links which are required for example by QEMU/libvirt.
Instead of duplicating the code refactor pci_iov_add_virtfn() to make
sysfs link creation callable separately.
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Pierre Morel <pmorel@linux.ibm.com>
Link: https://lore.kernel.org/r/20200506154139.90609-1-schnelle@linux.ibm.com
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'include/linux/pci.h')
| -rw-r--r-- | include/linux/pci.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/include/linux/pci.h b/include/linux/pci.h index 83ce1cdf5676..93a063a7d7f9 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -2048,6 +2048,8 @@ int pci_iov_virtfn_devfn(struct pci_dev *dev, int id); int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn); void pci_disable_sriov(struct pci_dev *dev); + +int pci_iov_sysfs_link(struct pci_dev *dev, struct pci_dev *virtfn, int id); int pci_iov_add_virtfn(struct pci_dev *dev, int id); void pci_iov_remove_virtfn(struct pci_dev *dev, int id); int pci_num_vf(struct pci_dev *dev); @@ -2073,6 +2075,12 @@ static inline int pci_iov_virtfn_devfn(struct pci_dev *dev, int id) } static inline int pci_enable_sriov(struct pci_dev *dev, int nr_virtfn) { return -ENODEV; } + +static inline int pci_iov_sysfs_link(struct pci_dev *dev, + struct pci_dev *virtfn, int id) +{ + return -ENODEV; +} static inline int pci_iov_add_virtfn(struct pci_dev *dev, int id) { return -ENOSYS; |