diff options
| author |   Suthikulpanit, Suravee <Suravee.Suthikulpanit@amd.com> | 2015-06-10 11:08:53 -0500 |
|---|---|---|
| committer |   Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-06-15 14:40:49 +0200 |
| commit | b6197b93fa4bcba9313cc415934e3fe27e2db9b0 (patch) | |
| tree | 8420fa14c410e23aae37f1277e5473ef047ca99d /arch/arm64/Kconfig | |
| parent | ACPI / scan: Parse _CCA and setup device coherency (diff) | |
| download | linux-dev-b6197b93fa4bcba9313cc415934e3fe27e2db9b0.tar.xz linux-dev-b6197b93fa4bcba9313cc415934e3fe27e2db9b0.zip | |
arm64 : Introduce support for ACPI _CCA object
section 6.2.17 _CCA states that ARM platforms require ACPI _CCA
object to be specified for DMA-cabpable devices. Therefore, this patch
specifies ACPI_CCA_REQUIRED in arm64 Kconfig.
In addition, to handle the case when _CCA is missing, arm64 would assign
dummy_dma_ops to disable DMA capability of the device.
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 7796af4b1d6f..6be1a6efcdd6 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1,5 +1,6 @@ config ARM64 def_bool y + select ACPI_CCA_REQUIRED if ACPI select ACPI_GENERIC_GSI if ACPI select ACPI_REDUCED_HARDWARE_ONLY if ACPI select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE |