Hi,
* Lu Baolu <baolu.lu@xxxxxxxxxxxxxxx> [700101 02:00]:
> The is_attach_deferred iommu_ops callback is a device op. The domain
> argument is unnecessary and never used. Remove it to make code clean.
Looks like this causes a regression for at least drivers/iommu/omap-iommu.c.
To me it seems the issue is there is no is_attach_deferred implemented, so
we get a NULL pointer dereference at virtual address 00000008:
__iommu_probe_device from probe_iommu_group+0x2c/0x38
probe_iommu_group from bus_for_each_dev+0x74/0xbc
bus_for_each_dev from bus_iommu_probe+0x34/0x2e8
bus_iommu_probe from bus_set_iommu+0x80/0xc8
bus_set_iommu from omap_iommu_init+0x88/0xcc
omap_iommu_init from do_one_initcall+0x44/0x24c
Any ideas for a fix?
It would be good to fix this quickly so we don't end up with a broken
v5.18-rc1..
For reference, this is mainline commit 41bb23e70b50 ("iommu: Remove unused
argument in is_attach_deferred").
Regards,
Tony
#regzbot ^introduced 41bb23e70b50
