[PATCH] irqchip/riscv-intc: Remove asmlinkage

[PATCH] irqchip/riscv-intc: Remove asmlinkage

[Jisheng Zhang]

The two functions riscv_intc_aia_irq() and riscv_intc_irq()
are only called by C functions.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
---

Hi riscv maintainers and all,

Related question:

I believe the asmlinkage in riscv is a nop, is it OK to
remove asmlinkage from all riscv code?

Anyway, no matter what will be the decision, it's correct to
remove asmlinkage in riscv intc driver as this patch does.

thanks

 drivers/irqchip/irq-riscv-intc.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/irqchip/irq-riscv-intc.c b/drivers/irqchip/irq-riscv-intc.c
index 4f3a12383a1e..47f3200476da 100644
--- a/drivers/irqchip/irq-riscv-intc.c
+++ b/drivers/irqchip/irq-riscv-intc.c
@@ -26,7 +26,7 @@ static unsigned int riscv_intc_nr_irqs __ro_after_init = BITS_PER_LONG;
 static unsigned int riscv_intc_custom_base __ro_after_init = BITS_PER_LONG;
 static unsigned int riscv_intc_custom_nr_irqs __ro_after_init;
 
-static asmlinkage void riscv_intc_irq(struct pt_regs *regs)
+static void riscv_intc_irq(struct pt_regs *regs)
 {
 	unsigned long cause = regs->cause & ~CAUSE_IRQ_FLAG;
 
@@ -34,7 +34,7 @@ static asmlinkage void riscv_intc_irq(struct pt_regs *regs)
 		pr_warn_ratelimited("Failed to handle interrupt (cause: %ld)\n", cause);
 }
 
-static asmlinkage void riscv_intc_aia_irq(struct pt_regs *regs)
+static void riscv_intc_aia_irq(struct pt_regs *regs)
 {
 	unsigned long topi;
 
-- 
2.43.0


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Re: [PATCH] irqchip/riscv-intc: Remove asmlinkage

[Anup Patel]

On Fri, Jun 14, 2024 at 9:03 PM Jisheng Zhang <jszhang@kernel.org> wrote:
>
> The two functions riscv_intc_aia_irq() and riscv_intc_irq()
> are only called by C functions.
>
> Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
> ---
>
> Hi riscv maintainers and all,
>
> Related question:
>
> I believe the asmlinkage in riscv is a nop, is it OK to
> remove asmlinkage from all riscv code?
>
> Anyway, no matter what will be the decision, it's correct to
> remove asmlinkage in riscv intc driver as this patch does.
>
> thanks
>
>  drivers/irqchip/irq-riscv-intc.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/irqchip/irq-riscv-intc.c b/drivers/irqchip/irq-riscv-intc.c
> index 4f3a12383a1e..47f3200476da 100644
> --- a/drivers/irqchip/irq-riscv-intc.c
> +++ b/drivers/irqchip/irq-riscv-intc.c
> @@ -26,7 +26,7 @@ static unsigned int riscv_intc_nr_irqs __ro_after_init = BITS_PER_LONG;
>  static unsigned int riscv_intc_custom_base __ro_after_init = BITS_PER_LONG;
>  static unsigned int riscv_intc_custom_nr_irqs __ro_after_init;
>
> -static asmlinkage void riscv_intc_irq(struct pt_regs *regs)
> +static void riscv_intc_irq(struct pt_regs *regs)
>  {
>         unsigned long cause = regs->cause & ~CAUSE_IRQ_FLAG;
>
> @@ -34,7 +34,7 @@ static asmlinkage void riscv_intc_irq(struct pt_regs *regs)
>                 pr_warn_ratelimited("Failed to handle interrupt (cause: %ld)\n", cause);
>  }
>
> -static asmlinkage void riscv_intc_aia_irq(struct pt_regs *regs)
> +static void riscv_intc_aia_irq(struct pt_regs *regs)
>  {
>         unsigned long topi;
>
> --
> 2.43.0
>

Yes, these asmlinkage can be removed.

Previously, we used to call these handlers from low-level trap handlers
which is not true anymore.

Reviewed-by: Anup Patel <anup@brainfault.org>

Regards,
Anup

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Re: [PATCH] irqchip/riscv-intc: Remove asmlinkage

[patchwork-bot+linux-riscv]

Hello:

This patch was applied to riscv/linux.git (for-next)
by Palmer Dabbelt <palmer@rivosinc.com>:

On Fri, 14 Jun 2024 23:19:55 +0800 you wrote:
> The two functions riscv_intc_aia_irq() and riscv_intc_irq()
> are only called by C functions.
> 
> Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
> ---
> 
> Hi riscv maintainers and all,
> 
> [...]

Here is the summary with links:
  - irqchip/riscv-intc: Remove asmlinkage
    https://git.kernel.org/riscv/c/96333a020615

You are awesome, thank you!
-- 
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html



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Re: [PATCH] irqchip/riscv-intc: Remove asmlinkage

[Thomas Gleixner]

On Thu, Jul 25 2024 at 13:20, patchwork-bot wrote:
> This patch was applied to riscv/linux.git (for-next)
> by Palmer Dabbelt <palmer@rivosinc.com>:

It's already upstream: 722c9389c7fa ("irqchip/riscv-intc: Remove asmlinkage")


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