Hi Geert,
Thank you for the review.
> -----Original Message-----
> From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
> Sent: 20 January 2022 08:45
> To: Prabhakar Mahadev Lad <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
> Cc: Magnus Damm <magnus.damm@xxxxxxxxx>; Biju Das <biju.das.jz@xxxxxxxxxxxxxx>; Linux-Renesas <linux-
> renesas-soc@xxxxxxxxxxxxxxx>; Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>
> Subject: Re: [PATCH] soc: renesas: Add support for reading product revision for RZ/G2L family
>
> Hi Prabhakar,
>
> On Mon, Dec 20, 2021 at 6:04 PM Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx> wrote:
> > From: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> >
> > As per RZ/G2L HW manual (Rev.1.00 Sep, 2021) DEV_ID [31:28] indicates
> > product revision. Use this information to populate the revision info
> > for RZ/G2L family.
> >
> > Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
> > Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
>
> Thanks for your patch!
>
> > Below is the log from Renesas RZ/G2L SMARC EVK:
> >
> > root@smarc-rzg2l:~#
> > at /sys/devices/soc0/$i; donemachine family soc_id revision; do echo
> > -n "$i: ";ca
>
> This looks a bit mangled ;-)
>
Typical Tera Term.
> > machine: Renesas SMARC EVK based on r9a07g044l2
> > family: RZ/G2L
> > soc_id: r9a07g044
> > revision: Rev 1
> > root@smarc-rzg2l:~#
> >
> > Cheers,
> > Prabhakar
> > ---
> > drivers/soc/renesas/renesas-soc.c | 31
> > +++++++++++++++++--------------
> > 1 file changed, 17 insertions(+), 14 deletions(-)
> >
> > diff --git a/drivers/soc/renesas/renesas-soc.c
> > b/drivers/soc/renesas/renesas-soc.c
> > index 8f82749f182f..6ecd2763d100 100644
> > --- a/drivers/soc/renesas/renesas-soc.c
> > +++ b/drivers/soc/renesas/renesas-soc.c
> > @@ -416,6 +416,17 @@ static int __init renesas_soc_init(void)
> > chipid = ioremap(family->reg, 4);
> > }
> >
> > + soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
>
> This is not freed in case of SoC mismatch error below.
>
Ouch.
> > + if (!soc_dev_attr)
> > + return -ENOMEM;
> > +
> > + np = of_find_node_by_path("/");
> > + of_property_read_string(np, "model", &soc_dev_attr->machine);
> > + of_node_put(np);
> > +
> > + soc_dev_attr->family = kstrdup_const(family->name, GFP_KERNEL);
> > + soc_dev_attr->soc_id = kstrdup_const(soc_id, GFP_KERNEL);
> > +
> > if (chipid) {
> > product = readl(chipid + id->offset);
> > iounmap(chipid);
> > @@ -430,6 +441,12 @@ static int __init renesas_soc_init(void)
> >
> > eshi = ((product >> 4) & 0x0f) + 1;
> > eslo = product & 0xf;
> > + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "ES%u.%u",
> > + eshi, eslo);
> > + } else if (id == &id_rzg2l) {
> > + eshi = ((product >> 28) & 0x0f);
> > + soc_dev_attr->revision = kasprintf(GFP_KERNEL, "Rev %u",
> > + eshi);
>
> These are not freed in case of SoC mismatch error below.
>
Will fix that.
Cheers,
Prabhakar
