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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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On Wednesday, September 09, 2015 07:16:49 PM Suthikulpanit, Suravee wrote:
> Hi All,
>
> Are there any other concerns about this patch series?

I have none, but then it sort of missed the merge window.

I can easily queue it up for the next one unless it is super-urgent,
but in that case I need to know why that's the case.


> 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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--
I speak only for myself.
Rafael J. Wysocki, Intel Open Source Technology Center.


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