From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: Linux-Renesas <linux-renesas-soc@vger.kernel.org>,
Linux IOMMU <iommu@lists.linux-foundation.org>
Subject: Re: [PATCH 1/3] iommu/ipmmu-vmsa: Remove some unused register declarations
Date: Fri, 11 Oct 2019 14:10:56 +0200 [thread overview]
Message-ID: <CAMuHMdWfHYDOKSJBUCVLG6yNKxbv=jUd9E1B_fiBOQajwi_wEg@mail.gmail.com> (raw)
In-Reply-To: <1570609609-1332-2-git-send-email-yoshihiro.shimoda.uh@renesas.com>
Hi Shimoda-san,
Thanks for your patch!
On Wed, Oct 9, 2019 at 10:27 AM Yoshihiro Shimoda
<yoshihiro.shimoda.uh@renesas.com> wrote:
> To support different registers memory mapping hardware easily
> in the future, this patch removes some unused register
> declarations.
>
> Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
While I can confirm the removed definitions are unused, they were
still valid (but see comments below).
Perhaps it would be better to add comments, to state clearly to which
SoCs or SoC families they apply? Or do you think this would be futile,
and would add too much clutter to the source file in the near future?
> --- a/drivers/iommu/ipmmu-vmsa.c
> +++ b/drivers/iommu/ipmmu-vmsa.c
> @@ -104,8 +104,6 @@ static struct ipmmu_vmsa_device *to_ipmmu(struct device *dev)
> #define IMCTR 0x0000
> #define IMCTR_TRE (1 << 17)
> #define IMCTR_AFE (1 << 16)
> -#define IMCTR_RTSEL_MASK (3 << 4)
FWIW, this is valid for R-Car Gen2 only. On R-Car Gen3, the field
contains 3 bits.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org
In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
-- Linus Torvalds
_______________________________________________
iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2019-10-11 12:23 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-09 8:26 [PATCH 0/3] iommu/ipmmu-vmsa: minor updates Yoshihiro Shimoda
2019-10-09 8:26 ` [PATCH 1/3] iommu/ipmmu-vmsa: Remove some unused register declarations Yoshihiro Shimoda
2019-10-09 21:03 ` Niklas Söderlund
2019-10-11 12:10 ` Geert Uytterhoeven [this message]
2019-10-15 5:17 ` Yoshihiro Shimoda
2019-10-09 8:26 ` [PATCH 2/3] iommu/ipmmu-vmsa: Calculate context registers' offset instead of a macro Yoshihiro Shimoda
2019-10-09 21:13 ` Niklas Söderlund
2019-10-11 12:29 ` Geert Uytterhoeven
2019-10-15 5:28 ` Yoshihiro Shimoda
2019-10-09 8:26 ` [PATCH 3/3] iommu/ipmmu-vmsa: Add utlb_offset_base Yoshihiro Shimoda
2019-10-09 22:28 ` Niklas Söderlund
2019-10-11 12:32 ` Geert Uytterhoeven
2019-10-15 5:28 ` Yoshihiro Shimoda
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAMuHMdWfHYDOKSJBUCVLG6yNKxbv=jUd9E1B_fiBOQajwi_wEg@mail.gmail.com' \
--to=geert@linux-m68k.org \
--cc=iommu@lists.linux-foundation.org \
--cc=linux-renesas-soc@vger.kernel.org \
--cc=yoshihiro.shimoda.uh@renesas.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).