LoongArch: Remove a bogus reference to ZONE_DMA

[PATCH] LoongArch: Remove a bogus reference to ZONE_DMA

Posted by Petr Tesarik 10 months, 1 week ago

Remove dead code. LoongArch does not have a DMA memory zone. The
architecture does not even define MAX_DMA_PFN.

Signed-off-by: Petr Tesarik <ptesarik@suse.com>
---
 arch/loongarch/mm/init.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
index ca5aa5f46a9f..7fab370efa74 100644
--- a/arch/loongarch/mm/init.c
+++ b/arch/loongarch/mm/init.c
@@ -65,9 +65,6 @@ void __init paging_init(void)
 {
 	unsigned long max_zone_pfns[MAX_NR_ZONES];
 
-#ifdef CONFIG_ZONE_DMA
-	max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
-#endif
 #ifdef CONFIG_ZONE_DMA32
 	max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
 #endif
-- 
2.48.1

Re: [PATCH] LoongArch: Remove a bogus reference to ZONE_DMA

Posted by Huacai Chen 9 months, 2 weeks ago

Applied, thanks.

Huacai

On Thu, Apr 3, 2025 at 10:11 PM Petr Tesarik <ptesarik@suse.com> wrote:
>
> Remove dead code. LoongArch does not have a DMA memory zone. The
> architecture does not even define MAX_DMA_PFN.
>
> Signed-off-by: Petr Tesarik <ptesarik@suse.com>
> ---
>  arch/loongarch/mm/init.c | 3 ---
>  1 file changed, 3 deletions(-)
>
> diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
> index ca5aa5f46a9f..7fab370efa74 100644
> --- a/arch/loongarch/mm/init.c
> +++ b/arch/loongarch/mm/init.c
> @@ -65,9 +65,6 @@ void __init paging_init(void)
>  {
>         unsigned long max_zone_pfns[MAX_NR_ZONES];
>
> -#ifdef CONFIG_ZONE_DMA
> -       max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
> -#endif
>  #ifdef CONFIG_ZONE_DMA32
>         max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
>  #endif
> --
> 2.48.1
>

Re: [PATCH] LoongArch: Remove a bogus reference to ZONE_DMA

Posted by Mike Rapoport 10 months, 1 week ago

On Thu, Apr 03, 2025 at 04:11:25PM +0200, Petr Tesarik wrote:
> Remove dead code. LoongArch does not have a DMA memory zone. The
> architecture does not even define MAX_DMA_PFN.
> 
> Signed-off-by: Petr Tesarik <ptesarik@suse.com>

Reviewed-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

> ---
>  arch/loongarch/mm/init.c | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/arch/loongarch/mm/init.c b/arch/loongarch/mm/init.c
> index ca5aa5f46a9f..7fab370efa74 100644
> --- a/arch/loongarch/mm/init.c
> +++ b/arch/loongarch/mm/init.c
> @@ -65,9 +65,6 @@ void __init paging_init(void)
>  {
>  	unsigned long max_zone_pfns[MAX_NR_ZONES];
>  
> -#ifdef CONFIG_ZONE_DMA
> -	max_zone_pfns[ZONE_DMA] = MAX_DMA_PFN;
> -#endif
>  #ifdef CONFIG_ZONE_DMA32
>  	max_zone_pfns[ZONE_DMA32] = MAX_DMA32_PFN;
>  #endif
> -- 
> 2.48.1
> 

-- 
Sincerely yours,
Mike.