linux-kernel - Re: [PATCH v4 1/4] RISC-V: Change suspend_save_csrs and suspend_restore

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Date:   Thu, 23 Feb 2023 07:39:36 +0100
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Sia Jee Heng <jeeheng.sia@...rfivetech.com>
Cc:     paul.walmsley@...ive.com, palmer@...belt.com,
        aou@...s.berkeley.edu, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org, leyfoon.tan@...rfivetech.com,
        mason.huo@...rfivetech.com,
        Conor Dooley <conor.dooley@...rochip.com>
Subject: Re: [PATCH v4 1/4] RISC-V: Change suspend_save_csrs and
 suspend_restore_csrs to public function

On Tue, Feb 21, 2023 at 10:35:20AM +0800, Sia Jee Heng wrote:
> Currently suspend_save_csrs() and suspend_restore_csrs() functions are
> statically defined in the suspend.c. Change the function's attribute
> to public so that the functions can be used by hibernation as well.
> 
> Signed-off-by: Sia Jee Heng <jeeheng.sia@...rfivetech.com>
> Reviewed-by: Ley Foon Tan <leyfoon.tan@...rfivetech.com>
> Reviewed-by: Mason Huo <mason.huo@...rfivetech.com>
> Reviewed-by: Conor Dooley <conor.dooley@...rochip.com>
> ---
>  arch/riscv/include/asm/suspend.h | 3 +++
>  arch/riscv/kernel/suspend.c      | 4 ++--
>  2 files changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/arch/riscv/include/asm/suspend.h b/arch/riscv/include/asm/suspend.h
> index 8be391c2aecb..75419c5ca272 100644
> --- a/arch/riscv/include/asm/suspend.h
> +++ b/arch/riscv/include/asm/suspend.h
> @@ -33,4 +33,7 @@ int cpu_suspend(unsigned long arg,
>  /* Low-level CPU resume entry function */
>  int __cpu_resume_enter(unsigned long hartid, unsigned long context);
>  
> +/* Used to save and restore the csr */

s/the csr/CSRs/

> +void suspend_save_csrs(struct suspend_context *context);
> +void suspend_restore_csrs(struct suspend_context *context);
>  #endif
> diff --git a/arch/riscv/kernel/suspend.c b/arch/riscv/kernel/suspend.c
> index 9ba24fb8cc93..3c89b8ec69c4 100644
> --- a/arch/riscv/kernel/suspend.c
> +++ b/arch/riscv/kernel/suspend.c
> @@ -8,7 +8,7 @@
>  #include <asm/csr.h>
>  #include <asm/suspend.h>
>  
> -static void suspend_save_csrs(struct suspend_context *context)
> +void suspend_save_csrs(struct suspend_context *context)
>  {
>  	context->scratch = csr_read(CSR_SCRATCH);
>  	context->tvec = csr_read(CSR_TVEC);
> @@ -29,7 +29,7 @@ static void suspend_save_csrs(struct suspend_context *context)
>  #endif
>  }
>  
> -static void suspend_restore_csrs(struct suspend_context *context)
> +void suspend_restore_csrs(struct suspend_context *context)
>  {
>  	csr_write(CSR_SCRATCH, context->scratch);
>  	csr_write(CSR_TVEC, context->tvec);
> -- 
> 2.34.1
>

Otherwise,

Reviewed-by: Andrew Jones <ajones@...tanamicro.com>

Thanks,
drew