[PATCH] ACPI/IORT: Remove obsolete ACPI_IORT_SMMU_V3_CAVIUM_CN99XX define

[Robin Murphy]

Hi Lorenzo,

On 28/02/18 16:24, Lorenzo Pieralisi wrote:
> To defeat ACPICA<->kernel merge order dependencies a preprocessor define
> value was introduced in the IORT compilation unit according to IORT
> revision C, IORT_SMMU_V3_CAVIUM_CN99XX, so that even if the value was
> not defined in ACPICA headers the IORT kernel layer would still be able
> to function and use it.
> 
> Since commit 0c2021c047ba ("ACPICA: IORT: Update SMMU models for
> revision C") finally added the define in ACPICA headers, as required by
> ACPICA IORT support, the preprocessor definition in the IORT kernel
> compilation unit has become obsolete and can be removed.

Can the version check around iort_get_id_mapping_index() go as well?

Robin.

> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi at arm.com>
> Cc: Will Deacon <will.deacon at arm.com>
> Cc: Hanjun Guo <hanjun.guo at linaro.org>
> Cc: Sudeep Holla <sudeep.holla at arm.com>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Cc: Robin Murphy <robin.murphy at arm.com>
> Cc: "Rafael J. Wysocki" <rjw at rjwysocki.net>
> ---
>   drivers/acpi/arm64/iort.c | 5 -----
>   1 file changed, 5 deletions(-)
> 
> diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c
> index 95255ecfae7c..c87b17ea03b7 100644
> --- a/drivers/acpi/arm64/iort.c
> +++ b/drivers/acpi/arm64/iort.c
> @@ -31,11 +31,6 @@
>   #define IORT_IOMMU_TYPE		((1 << ACPI_IORT_NODE_SMMU) |	\
>   				(1 << ACPI_IORT_NODE_SMMU_V3))
>   
> -/* Until ACPICA headers cover IORT rev. C */
> -#ifndef ACPI_IORT_SMMU_V3_CAVIUM_CN99XX
> -#define ACPI_IORT_SMMU_V3_CAVIUM_CN99XX		0x2
> -#endif
> -
>   struct iort_its_msi_chip {
>   	struct list_head	list;
>   	struct fwnode_handle	*fw_node;
>