Re: [PATCH 1/3] mfd: intel_pmt: Add OOBMSM device ID

Lee Jones
2020-10-01T07:55:41Z

On Wed, 30 Sep 2020, David E. Box wrote:

> On Wed, 2020-09-30 at 08:12 +0100, Lee Jones wrote:
> > On Tue, 29 Sep 2020, David E. Box wrote:
> >
> > > On Tue, 2020-09-29 at 10:51 +0100, Lee Jones wrote:
> > > > On Fri, 11 Sep 2020, David E. Box wrote:
> > > >
> > > > > Add Out of Band Management Services Module device ID to Intel
> > > > > PMT
> > > > > driver.
> > > > >
> > > > > Signed-off-by: Alexander Duyck <
> > > > > alexander.h.duyck@linux.intel.com>
> > > > > Signed-off-by: David E. Box <david.e.box@linux.intel.com>
> > > > > ---
> > > > > drivers/mfd/intel_pmt.c | 4 ++++
> > > > > 1 file changed, 4 insertions(+)
> > > > >
> > > > > diff --git a/drivers/mfd/intel_pmt.c b/drivers/mfd/intel_pmt.c
> > > > > index 0e572b105101..8f9970ab3026 100644
> > > > > --- a/drivers/mfd/intel_pmt.c
> > > > > +++ b/drivers/mfd/intel_pmt.c
> > > > > @@ -55,6 +55,8 @@ struct pmt_platform_info {
> > > > > unsigned long quirks;
> > > > > };
> > > > >
> > > > > +static const struct pmt_platform_info pmt_info;
> > > > > +
> > > > > static const struct pmt_platform_info tgl_info = {
> > > > > .quirks = PMT_QUIRK_NO_WATCHER | PMT_QUIRK_NO_CRASHLOG
> > > > > |
> > > > > PMT_QUIRK_TABLE_SHIFT,
> > > > > @@ -200,8 +202,10 @@ static void pmt_pci_remove(struct pci_dev
> > > > > *pdev)
> > > > > pm_runtime_get_sync(&pdev->dev);
> > > > > }
> > > > >
> > > > > +#define PCI_DEVICE_ID_INTEL_PMT_OOBMSM 0x09a7
> > > > > #define PCI_DEVICE_ID_INTEL_PMT_TGL 0x9a0d
> > > > > static const struct pci_device_id pmt_pci_ids[] = {
> > > > > + { PCI_DEVICE_DATA(INTEL, PMT_OOBMSM, &pmt_info) },
> > > >
> > > > Why are you supplying an empty struct?
> > >
> > > Because the OOBMSM device doesn't need code provided driver data,
> > > but
> > > info is dereferenced in several areas. We also use kmemdup to copy
> > > driver_data under the assumption that it was provided. We could
> > > allow
> > > for NULL if driver_data is referenced directly.
> >
> > Just check for NULL. No need to create and send bogus data.
>
> Sure. If you haven't already, please note that this patch was pulled
> into the V6 series in the link below. You accepted V5 but Hans
> suggested some late changes after reviewing the new crashlog driver in
> this patchset. So rather than have separate patchsets with a
> dependency, we bundled them all into the original. We'll make these
> changes in V7 now.
>
> https://lore.kernel.org/patchwork/patch/1313166/

Sounds reasonable.

--
Lee Jones [李琼斯]
Senior Technical Lead - Developer Services
Linaro.org │ Open source software for Arm SoCs
Follow Linaro: Facebook | Twitter | Blog