Also the shortlog could be improved, IMO. E.g., Ignore minor version
mismatch.
--
i.
On Fri, 29 Sep 2023, Ilpo Järvinen wrote:
> On Mon, 25 Sep 2023, Srinivas Pandruvada wrote:
>
> > Parse major and minor version number from the version field. If there
> > is a mismatch for major version, exit from further processing for that
> > domain.
> >
> > If there is mismatch in minor version, driver continue to process with
> > an error message.
>
> This sentence sounds odd.
>
> > Minor version change doesn't change offsets and bit
> > structures of TPMI fields.
> >
> > Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@xxxxxxxxxxxxxxx>
> > ---
> > .../x86/intel/speed_select_if/isst_tpmi_core.c | 16 ++++++++++++----
> > 1 file changed, 12 insertions(+), 4 deletions(-)
> >
> > diff --git a/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c b/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c
> > index 63faa2ea8327..37f17e229419 100644
> > --- a/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c
> > +++ b/drivers/platform/x86/intel/speed_select_if/isst_tpmi_core.c
> > @@ -30,7 +30,8 @@
> > #include "isst_if_common.h"
> >
> > /* Supported SST hardware version by this driver */
> > -#define ISST_HEADER_VERSION 1
> > +#define ISST_MAJOR_VERSION 0
> > +#define ISST_MINOR_VERSION 1
> >
> > /*
> > * Used to indicate if value read from MMIO needs to get multiplied
> > @@ -352,12 +353,19 @@ static int sst_main(struct auxiliary_device *auxdev, struct tpmi_per_power_domai
> > pd_info->sst_header.cp_offset *= 8;
> > pd_info->sst_header.pp_offset *= 8;
> >
> > - if (pd_info->sst_header.interface_version != ISST_HEADER_VERSION) {
> > - dev_err(&auxdev->dev, "SST: Unsupported version:%x\n",
> > - pd_info->sst_header.interface_version);
> > + if (pd_info->sst_header.interface_version == TPMI_VERSION_INVALID)
> > + return -ENODEV;
> > +
> > + if (TPMI_MAJOR_VERSION(pd_info->sst_header.interface_version) != ISST_MAJOR_VERSION) {
> > + dev_err(&auxdev->dev, "SST: Unsupported major version:%lx\n",
> > + TPMI_MAJOR_VERSION(pd_info->sst_header.interface_version));
> > return -ENODEV;
> > }
> >
> > + if (TPMI_MINOR_VERSION(pd_info->sst_header.interface_version) != ISST_MINOR_VERSION)
> > + dev_err(&auxdev->dev, "SST: Ignore: Unsupported minor version:%lx\n",
> > + TPMI_MINOR_VERSION(pd_info->sst_header.interface_version));
>
> Why is this dev_err(), wouldn't dev_info() be more appropriate since
> after this patch it's no longer an error?
>
> > +
> > /* Read SST CP Header */
> > *((u64 *)&pd_info->cp_header) = readq(pd_info->sst_base + pd_info->sst_header.cp_offset);
> >
> >
>
>
