linux-kernel - Re: [PATCH 21/24] RISC-V: ACPI: Add ACPI initialization in setup

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Message-ID: <Y+p42n3bm5xkTtSr@sunil-laptop>
Date:   Mon, 13 Feb 2023 23:22:26 +0530
From:   Sunil V L <sunilvl@...tanamicro.com>
To:     Conor Dooley <conor@...nel.org>
Cc:     Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Len Brown <lenb@...nel.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Marc Zyngier <maz@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Jonathan Corbet <corbet@....net>,
        linux-riscv@...ts.infradead.org, linux-acpi@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-doc@...r.kernel.org,
        Anup Patel <apatel@...tanamicro.com>,
        Andrew Jones <ajones@...tanamicro.com>,
        Atish Patra <atishp@...osinc.com>
Subject: Re: [PATCH 21/24] RISC-V: ACPI: Add ACPI initialization in
 setup_arch()

On Thu, Feb 09, 2023 at 09:53:59PM +0000, Conor Dooley wrote:
> On Mon, Jan 30, 2023 at 11:52:22PM +0530, Sunil V L wrote:
> > Initialize ACPI tables for RISC-V during boot.
> > 
> > Signed-off-by: Sunil V L <sunilvl@...tanamicro.com>
> > ---
> >  arch/riscv/kernel/setup.c | 19 ++++++++++++++-----
> >  1 file changed, 14 insertions(+), 5 deletions(-)
> > 
> > diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
> > index 4335f08ffaf2..5b4ad1baf664 100644
> > --- a/arch/riscv/kernel/setup.c
> > +++ b/arch/riscv/kernel/setup.c
> > @@ -8,6 +8,7 @@
> >   *  Nick Kossifidis <mick@....forth.gr>
> >   */
> >  
> > +#include <linux/acpi.h>
> >  #include <linux/init.h>
> >  #include <linux/mm.h>
> >  #include <linux/memblock.h>
> > @@ -276,14 +277,22 @@ void __init setup_arch(char **cmdline_p)
> >  
> >  	efi_init();
> >  	paging_init();
> > +
> > +	/* Parse the ACPI tables for possible boot-time configuration */
> > +	acpi_boot_table_init();
> > +	if (acpi_disabled) {
> >  #if IS_ENABLED(CONFIG_BUILTIN_DTB)
> 
> I only poked it with a stick, but I think this `#if IS_ENABLED()` can
> be changed to a normal `if (IS_ENABLED())` while you're already
> modifying this code.
> 
Sure,

Thanks
Sunil