On Tue, Jun 07, 2016 at 02:31:05PM +0100, Lorenzo Pieralisi wrote: > On systems booting with ACPI that enable the ARM SMMU components > in the kernel config options, the ARM SMMU v3 init function > (ie arm_smmu_init(), that registers the driver and sets-up bus > iommu operations) does not run only because the device tree interface > (of_find_matching_node()) fails to find the respective device tree > nodes for ARM SMMU devices. > > This works as long as there are no ARM SMMU devices to be probed > with ACPI. If ARM SMMU v3 components are part of the IORT tables, > for them to be instantiated and probed the function registering > the ARM SMMU v3 driver must be able to register the driver and > initialize the bus IOMMU operations accordingly. > > This patch changes the logic in arm-smmu-v3 init call to allow > for it to be probed in ACPI systems. > > Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@xxxxxxx> > Cc: Will Deacon <will.deacon@xxxxxxx> > Cc: Robin Murphy <robin.murphy@xxxxxxx> > Cc: Joerg Roedel <joro@xxxxxxxxxx> > --- > drivers/iommu/arm-smmu-v3.c | 13 +++++++++---- > 1 file changed, 9 insertions(+), 4 deletions(-) Acked-by: Will Deacon <will.deacon@xxxxxxx> Will -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
