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SubjectRe: [PATCH V3 0/4] PCI: ACPI: Setting up DMA coherency for PCI device from _CCA attribute
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Hi All,

Are there any other concerns about this patch series?

Thanks,
Suravee

On 8/26/2015 8:54 PM, Suravee Suthikulpanit wrote:
> This patch adds support to setup DMA coherency for PCI device using
> the ACPI _CCA attribute. According to the ACPI spec, the _CCA attribute
> is required for ARM64. Therefore, this patch is a pre-req for ACPI PCI
> support for ARM64 which is currently in development.
>
> Also, this should not affect other architectures that does not define
> CONFIG_ACPI_CCA_REQUIRED, since the default value is coherent.
>
> I have included the following patch from Jeremy before cleaning up
> the acpi_check_dma() function (in patch 2).
>
> http://www.spinics.net/lists/linux-usb/msg128582.html)
>
> Changes from V2: (https://lkml.org/lkml/2015/8/25/549)
> * Return -ENOSUPP instead of -1 (per Rafael's suggestion)
> * Add WARN() when fail to setup DMA for PCI device when booting
> ACPI (per Arnd's suggestion)
> * Added Acked-by from Rob.
> * Minor clean up
>
> Changes from V1: (https://lkml.org/lkml/2015/8/13/182)
> * Include patch 1 from Jeremy to enable support for _CCA=0
> * Clean up acpi_check_dma() per Bjorn suggestions
> * Split the original V1 patch into two patches (patch 3 and 4)
>
>
> Jeremy Linton (1):
> Honor ACPI _CCA attribute setting
>
> Suravee Suthikulpanit (3):
> ACPI/scan: Clean up acpi_check_dma
> PCI: OF: Move of_pci_dma_configure() to pci_dma_configure()
> PCI: ACPI: Add support for PCI device DMA coherency
>
> drivers/acpi/acpi_platform.c | 7 ++++++-
> drivers/acpi/glue.c | 6 +++---
> drivers/acpi/scan.c | 39 +++++++++++++++++++++++++++++++++++++++
> drivers/base/property.c | 10 +++++++---
> drivers/of/of_pci.c | 20 --------------------
> drivers/pci/probe.c | 35 +++++++++++++++++++++++++++++++++--
> include/acpi/acpi_bus.h | 35 ++---------------------------------
> include/linux/acpi.h | 4 ++--
> include/linux/of_pci.h | 3 ---
> 9 files changed, 92 insertions(+), 67 deletions(-)
>


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