[PATCH 02/13] iommu: Move bus setup to IOMMU device registration
Lu Baolu
baolu.lu at linux.intel.com
Fri Apr 15 17:04:42 PDT 2022
On 2022/4/14 20:42, Robin Murphy wrote:
> @@ -1883,27 +1900,12 @@ static int iommu_bus_init(struct bus_type *bus)
> */
> int bus_set_iommu(struct bus_type *bus, const struct iommu_ops *ops)
> {
> - int err;
> -
> - if (ops == NULL) {
> - bus->iommu_ops = NULL;
> - return 0;
> - }
> -
> - if (bus->iommu_ops != NULL)
> + if (bus->iommu_ops && ops && bus->iommu_ops != ops)
> return -EBUSY;
>
> bus->iommu_ops = ops;
Do we still need to keep above lines in bus_set_iommu()?
Best regards,
baolu
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