From: "Rafael J. Wysocki" <rafael@kernel.org>
To: Ard Biesheuvel <ardb@kernel.org>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Linux ARM <linux-arm-kernel@lists.infradead.org>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
Len Brown <lenb@kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
Stable <stable@vger.kernel.org>
Subject: Re: [PATCH] ACPI: GED: add support for _Exx / _Lxx handler methods
Date: Tue, 26 May 2020 16:04:10 +0200 [thread overview]
Message-ID: <CAJZ5v0i0LbDjATGGN-+Xu_ztyrkCL5EXqwjdYDLwpnALiOoBtA@mail.gmail.com> (raw)
In-Reply-To: <CAMj1kXFVYOoX=pe9uVY-j_o8YhhE_Fef6q6jc8S9nzBLYSBb=g@mail.gmail.com>
On Tue, May 26, 2020 at 1:12 PM Ard Biesheuvel <ardb@kernel.org> wrote:
>
> Hello Rafael,
>
> I spotted an issue with this patch. Please see below.
>
>
> On Fri, 15 May 2020 at 18:32, Rafael J. Wysocki <rafael@kernel.org> wrote:
> >
> > On Fri, May 15, 2020 at 11:37 AM Ard Biesheuvel <ardb@kernel.org> wrote:
> > >
> > > Per the ACPI spec, interrupts in the range [0, 255] may be handled
> > > in AML using individual methods whose naming is based on the format
> > > _Exx or _Lxx, where xx is the hex representation of the interrupt
> > > index.
> > >
> > > Add support for this missing feature to our ACPI GED driver.
> > >
> > > Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
> > > Cc: Len Brown <lenb@kernel.org>
> > > Cc: linux-acpi@vger.kernel.org
> > > Cc: <stable@vger.kernel.org> # v4.9+
> > > Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
> > > ---
> > > drivers/acpi/evged.c | 22 +++++++++++++++++---
> > > 1 file changed, 19 insertions(+), 3 deletions(-)
> > >
> > > diff --git a/drivers/acpi/evged.c b/drivers/acpi/evged.c
> > > index aba0d0027586..6d7a522952bf 100644
> > > --- a/drivers/acpi/evged.c
> > > +++ b/drivers/acpi/evged.c
> > > @@ -79,6 +79,8 @@ static acpi_status acpi_ged_request_interrupt(struct acpi_resource *ares,
> > > struct resource r;
> > > struct acpi_resource_irq *p = &ares->data.irq;
> > > struct acpi_resource_extended_irq *pext = &ares->data.extended_irq;
> > > + char ev_name[5];
> > > + u8 trigger;
> > >
> > > if (ares->type == ACPI_RESOURCE_TYPE_END_TAG)
> > > return AE_OK;
> > > @@ -87,14 +89,28 @@ static acpi_status acpi_ged_request_interrupt(struct acpi_resource *ares,
> > > dev_err(dev, "unable to parse IRQ resource\n");
> > > return AE_ERROR;
> > > }
> > > - if (ares->type == ACPI_RESOURCE_TYPE_IRQ)
> > > + if (ares->type == ACPI_RESOURCE_TYPE_IRQ) {
> > > gsi = p->interrupts[0];
> > > - else
> > > + trigger = p->triggering;
> > > + } else {
> > > gsi = pext->interrupts[0];
> > > + trigger = p->triggering;
>
> This should be 'pext->triggering' instead.
>
> In practice, it doesn't matter, since p and pext point to the same
> union, and the 'triggering' field happens to be at the same offset.
> But it should still be fixed, of course.
>
> Would you prefer a followup patch? Or can you fix it locally?
A followup, please.
prev parent reply other threads:[~2020-05-26 14:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-15 9:36 [PATCH] ACPI: GED: add support for _Exx / _Lxx handler methods Ard Biesheuvel
2020-05-15 16:32 ` Rafael J. Wysocki
2020-05-26 11:12 ` Ard Biesheuvel
2020-05-26 14:04 ` Rafael J. Wysocki [this message]
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=CAJZ5v0i0LbDjATGGN-+Xu_ztyrkCL5EXqwjdYDLwpnALiOoBtA@mail.gmail.com \
--to=rafael@kernel.org \
--cc=ardb@kernel.org \
--cc=lenb@kernel.org \
--cc=linux-acpi@vger.kernel.org \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=rjw@rjwysocki.net \
--cc=stable@vger.kernel.org \
/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).