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Date:   Fri, 19 May 2023 12:28:07 +0100
From:   Conor Dooley <conor.dooley@microchip.com>
To:     JeeHeng Sia <jeeheng.sia@starfivetech.com>
CC:     Song Shuai <suagrfillet@gmail.com>,
        "paul.walmsley@sifive.com" <paul.walmsley@sifive.com>,
        "palmer@dabbelt.com" <palmer@dabbelt.com>,
        "aou@eecs.berkeley.edu" <aou@eecs.berkeley.edu>,
        Mason Huo <mason.huo@starfivetech.com>,
        Leyfoon Tan <leyfoon.tan@starfivetech.com>,
        "ajones@ventanamicro.com" <ajones@ventanamicro.com>,
        "linux-riscv@lists.infradead.org" <linux-riscv@lists.infradead.org>,
        "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
        Song Shuai <songshuaishuai@tinylab.org>
Subject: Re: [PATCH] riscv: hibernation: Remove duplicate call of
 suspend_restore_csrs
Message-ID: <20230519-clarinet-collar-ba2c0fa37e11@wendy>
References: <20230519102908.253458-1-suagrfillet@gmail.com>
 <9a274a44b61345e8aba747a44250c4d8@EXMBX066.cuchost.com>
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Hey,

On Fri, May 19, 2023 at 11:14:27AM +0000, JeeHeng Sia wrote:

> > The suspend_restore_csrs is called in both __hibernate_cpu_resume
> > and the `else` of subsequent swsusp_arch_suspend.
> >=20
> > Removing the first call makes both suspend_{save,restore}_csrs
> > left in swsusp_arch_suspend for clean code.
> >=20
> > Signed-off-by: Song Shuai <suagrfillet@gmail.com>
> > Signed-off-by: Song Shuai <songshuaishuai@tinylab.org>

BTW, why the two email addresses? The tinylab one here seems entirely
redundant - unless it is your employer, in which case should it be the
only SoB address & also in the author field?

Also, Fixes tag?

> > ---
> >  arch/riscv/kernel/hibernate-asm.S | 1 -
> >  1 file changed, 1 deletion(-)
> >=20
> > diff --git a/arch/riscv/kernel/hibernate-asm.S b/arch/riscv/kernel/hibe=
rnate-asm.S
> > index 5c76671c7e15..d698dd7df637 100644
> > --- a/arch/riscv/kernel/hibernate-asm.S
> > +++ b/arch/riscv/kernel/hibernate-asm.S
> > @@ -28,7 +28,6 @@ ENTRY(__hibernate_cpu_resume)
> >=20
> >  	REG_L	a0, hibernate_cpu_context
> >=20
> > -	suspend_restore_csrs
> >  	suspend_restore_regs

> Good catch. This function is invoked twice to restore the CSRs.
> I am good with removing this function from here.

If that's a review, then please either give an R-b or A-b tag :)

Thanks,
Conor.

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