Could you post this as a pull request on our github? https://github.com/acpica/acpica
> -----Original Message----- > From: Moore, Robert > Sent: Thursday, July 20, 2017 8:49 AM > To: 'Lorenzo Pieralisi' <[email protected]>; linux- > [email protected] > Cc: [email protected]; [email protected]; > Zhang, Rui <[email protected]>; Rafael J. Wysocki <[email protected]>; > Will Deacon <[email protected]>; Robin Murphy <[email protected]>; > Hanjun Guo <[email protected]>; Feng Kan <[email protected]>; Jon Masters > <[email protected]>; Nate Watterson <[email protected]> > Subject: RE: [PATCH 1/4] ACPI: Allow _DMA method in walk resources > > I think we can take this as-is into ACPICA. > Bob > > > > -----Original Message----- > > From: Lorenzo Pieralisi [mailto:[email protected]] > > Sent: Thursday, July 20, 2017 7:45 AM > > To: [email protected] > > Cc: [email protected]; > > [email protected]; Lorenzo Pieralisi > > <[email protected]>; Moore, Robert <[email protected]>; > Zhang, Rui <[email protected]>; Rafael J. > > Wysocki <[email protected]>; Will Deacon <[email protected]>; Robin > > Murphy <[email protected]>; Hanjun Guo <[email protected]>; > > Feng Kan <[email protected]>; Jon Masters <[email protected]>; Nate Watterson > > <[email protected]> > > Subject: [PATCH 1/4] ACPI: Allow _DMA method in walk resources > > > > The _DMA object contains a resource template, this change adds support > > for the walk resources function so that ACPI devices containing a _DMA > > object can actually parse it to detect DMA ranges for the respective > > bus. > > > > Signed-off-by: Lorenzo Pieralisi <[email protected]> > > Cc: Robert Moore <[email protected]> > > Cc: Zhang Rui <[email protected]> > > Cc: "Rafael J. Wysocki" <[email protected]> > > --- > > drivers/acpi/acpica/rsxface.c | 7 ++++--- > > include/acpi/acnames.h | 1 + > > 2 files changed, 5 insertions(+), 3 deletions(-) > > > > diff --git a/drivers/acpi/acpica/rsxface.c > > b/drivers/acpi/acpica/rsxface.c index 59a4f9e..be65e65 100644 > > --- a/drivers/acpi/acpica/rsxface.c > > +++ b/drivers/acpi/acpica/rsxface.c > > @@ -615,7 +615,7 @@ ACPI_EXPORT_SYMBOL(acpi_walk_resource_buffer) > > * device we are querying > > * name - Method name of the resources we > want. > > * (METHOD_NAME__CRS, > METHOD_NAME__PRS, > > or > > - * METHOD_NAME__AEI) > > + * METHOD_NAME__AEI or > METHOD_NAME__DMA) > > * user_function - Called for each resource > > * context - Passed to user_function > > * > > @@ -641,11 +641,12 @@ acpi_walk_resources(acpi_handle device_handle, > > if (!device_handle || !user_function || !name || > > (!ACPI_COMPARE_NAME(name, METHOD_NAME__CRS) && > > !ACPI_COMPARE_NAME(name, METHOD_NAME__PRS) && > > - !ACPI_COMPARE_NAME(name, METHOD_NAME__AEI))) { > > + !ACPI_COMPARE_NAME(name, METHOD_NAME__AEI) && > > + !ACPI_COMPARE_NAME(name, METHOD_NAME__DMA))) { > > return_ACPI_STATUS(AE_BAD_PARAMETER); > > } > > > > - /* Get the _CRS/_PRS/_AEI resource list */ > > + /* Get the _CRS/_PRS/_AEI/_DMA resource list */ > > > > buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; > > status = acpi_rs_get_method_data(device_handle, name, &buffer); > diff > > --git a/include/acpi/acnames.h b/include/acpi/acnames.h index > > b421584..d8dd3bf 100644 > > --- a/include/acpi/acnames.h > > +++ b/include/acpi/acnames.h > > @@ -54,6 +54,7 @@ > > #define METHOD_NAME__CLS "_CLS" > > #define METHOD_NAME__CRS "_CRS" > > #define METHOD_NAME__DDN "_DDN" > > +#define METHOD_NAME__DMA "_DMA" > > #define METHOD_NAME__HID "_HID" > > #define METHOD_NAME__INI "_INI" > > #define METHOD_NAME__PLD "_PLD" > > -- > > 2.10.0
