On Thursday, August 24, 2017 9:53:48 AM CEST Borislav Petkov wrote:
> On Wed, Aug 23, 2017 at 04:54:43PM -0600, Toshi Kani wrote:
> > ACPI OEM ID / OEM Table ID / Revision can be used to identify
> > a platform based on ACPI firmware info. acpi_blacklisted(),
> > intel_pstate_platform_pwr_mgmt_exists(), and some other funcs,
> > have been using similar check to detect a list of platforms
> > that require special handlings.
> >
> > Move the platform check in acpi_blacklisted() to a new common
> > utility function, acpi_match_platform_list(), so that other
> > drivers do not have to implement their own version.
> >
> > There is no change in functionality.
> >
> > Signed-off-by: Toshi Kani <toshi.kani@xxxxxxx>
> > Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
> > Cc: Borislav Petkov <bp@xxxxxxxxx>
> > ---
> > drivers/acpi/blacklist.c | 83 ++++++++--------------------------------------
> > drivers/acpi/utils.c | 36 ++++++++++++++++++++
> > include/linux/acpi.h | 19 +++++++++++
> > 3 files changed, 69 insertions(+), 69 deletions(-)
>
> ...
>
> > diff --git a/drivers/acpi/utils.c b/drivers/acpi/utils.c
> > index b9d956c..0a9e597 100644
> > --- a/drivers/acpi/utils.c
> > +++ b/drivers/acpi/utils.c
> > @@ -816,3 +816,39 @@ static int __init acpi_backlight(char *str)
> > return 1;
> > }
> > __setup("acpi_backlight=", acpi_backlight);
> > +
> > +/**
> > + * acpi_match_platform_list - Check if the system matches with a given list
> > + * @plat: pointer to acpi_platform_list table terminated by a NULL entry
> > + *
> > + * Return the matched index if the system is found in the platform list.
> > + * Otherwise, return a negative error code.
> > + */
> > +int acpi_match_platform_list(const struct acpi_platform_list *plat)
> > +{
> > + struct acpi_table_header hdr;
> > + int idx = 0;
> > +
> > + if (acpi_disabled)
> > + return -ENODEV;
> > +
> > + for (; plat->oem_id[0]; plat++, idx++) {
> > + if (ACPI_FAILURE(acpi_get_table_header(plat->table, 0, &hdr)))
> > + continue;
> > +
> > + if (strncmp(plat->oem_id, hdr.oem_id, ACPI_OEM_ID_SIZE))
> > + continue;
> > +
> > + if (strncmp(plat->oem_table_id, hdr.oem_table_id, ACPI_OEM_TABLE_ID_SIZE))
> > + continue;
> > +
> > + if ((plat->pred == all_versions) ||
> > + (plat->pred == less_than_or_equal && hdr.oem_revision <= plat->oem_revision) ||
> > + (plat->pred == greater_than_or_equal && hdr.oem_revision >= plat->oem_revision) ||
> > + (plat->pred == equal && hdr.oem_revision == plat->oem_revision))
>
> If you align the second part of the test like this:
>
> if ((plat->pred == all_versions) ||
> (plat->pred == less_than_or_equal && hdr.oem_revision <= plat->oem_revision) ||
> (plat->pred == greater_than_or_equal && hdr.oem_revision >= plat->oem_revision) ||
> (plat->pred == equal && hdr.oem_revision == plat->oem_revision))
>
> it gets maximally readable. But I'd leave that up to Rafael when committing
> - no need to send another version.
>
> Other than that:
>
> Reviewed-by: Borislav Petkov <bp@xxxxxxx>
OK
So what about the [3-5/5] in this series?
My current plan is to apply them too and expose a branch with them, can I
go ahead with that?
Thanks,
Rafael
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