On Tue, Jul 25, 2023 at 01:33:18PM +0800, Shiyang Ruan wrote:
>
>
> 在 2023/7/25 6:47, Alison Schofield 写道:
> > On Wed, Jul 19, 2023 at 04:05:26PM +0800, Shiyang Ruan wrote:
> > > The first for_each only do acpi_nfit_init_ars() for NFIT_SPA_VOLATILE
> > > and NFIT_SPA_PM, which can be moved to next one.
> >
> > Can the result of nfit_spa_type(nfit_spa->spa) change as a result of
> > the first switch statement? That would be a reason why they are separate.
>
> nfit_spa_type() just gets the type of *spa by querying a type-uuid table.
> Also, according to the code shown below, we can find that it doesn't change
> anything.
>
> int nfit_spa_type(struct acpi_nfit_system_address *spa)
> {
> guid_t guid;
> int i;
>
> import_guid(&guid, spa->range_guid);
> for (i = 0; i < NFIT_UUID_MAX; i++)
> if (guid_equal(to_nfit_uuid(i), &guid))
> return i;
> return -1;
> }
>
Hi Ruan,
I see that. I was questioning if the type change as a *result* of the
first switch statement, which does that acpi_nfi_init_ars().
I don't think it does. I'm only asking if you proved the correctness
of the change because I'm guessing this change is tested by inspection
only. Maybe not.
Thanks,
Alison
> --
> Thanks,
> Ruan.
>
> >
> > Alison
> >
> > >
> > > Signed-off-by: Shiyang Ruan <[email protected]>
> > > ---
> > > drivers/acpi/nfit/core.c | 8 --------
> > > 1 file changed, 8 deletions(-)
> > >
> > > diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
> > > index 07204d482968..4090a0a0505c 100644
> > > --- a/drivers/acpi/nfit/core.c
> > > +++ b/drivers/acpi/nfit/core.c
> > > @@ -2971,14 +2971,6 @@ static int acpi_nfit_register_regions(struct
> > > acpi_nfit_desc *acpi_desc)
> > > case NFIT_SPA_VOLATILE:
> > > case NFIT_SPA_PM:
> > > acpi_nfit_init_ars(acpi_desc, nfit_spa);
> > > - break;
> > > - }
> > > - }
> > > -
> > > - list_for_each_entry(nfit_spa, &acpi_desc->spas, list) {
> > > - switch (nfit_spa_type(nfit_spa->spa)) {
> > > - case NFIT_SPA_VOLATILE:
> > > - case NFIT_SPA_PM:
> > > /* register regions and kick off initial ARS
> > > run */
> > > rc = ars_register(acpi_desc, nfit_spa);
> > > if (rc)
> > > --
> > > 2.41.0
> > >
