Messages in this thread | | | Subject | Re: [PATCH V3 0/4] PCI: ACPI: Setting up DMA coherency for PCI device from _CCA attribute | From | "Suthikulpanit, Suravee" <> | Date | Wed, 9 Sep 2015 19:16:49 +0700 |
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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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