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device: bus_type: Introduce num_vf callback

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This allows for bus types to implement their own method of retrieving
the number of virtual functions a NIC on that type of bus supports.

Signed-off-by: Phil Sutter <phil@nwl.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Phil Sutter 2017-01-18 14:04:37 +01:00 committed by David S. Miller
parent 6c59ebd356
commit 582a686f52
1 changed files with 4 additions and 0 deletions
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4
include/linux/device.h
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@ -88,6 +88,8 @@ extern void bus_remove_file(struct bus_type *, struct bus_attribute *);
* *
* @suspend: Called when a device on this bus wants to go to sleep mode. * @suspend: Called when a device on this bus wants to go to sleep mode.
* @resume: Called to bring a device on this bus out of sleep mode. * @resume: Called to bring a device on this bus out of sleep mode.
* @num_vf: Called to find out how many virtual functions a device on this
* bus supports.
* @pm: Power management operations of this bus, callback the specific * @pm: Power management operations of this bus, callback the specific
* device driver's pm-ops. * device driver's pm-ops.
* @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU * @iommu_ops: IOMMU specific operations for this bus, used to attach IOMMU
@ -127,6 +129,8 @@ struct bus_type {
int (*suspend)(struct device *dev, pm_message_t state); int (*suspend)(struct device *dev, pm_message_t state);
int (*resume)(struct device *dev); int (*resume)(struct device *dev);
int (*num_vf)(struct device *dev);
const struct dev_pm_ops *pm; const struct dev_pm_ops *pm;
const struct iommu_ops *iommu_ops; const struct iommu_ops *iommu_ops;