linux-kernel - Re: [PATCH] arch/sparc: fix unused vaiable warning error

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Message-ID: <072b8188e07208b995eaf5d499c51cd12a25954d.camel@physik.fu-berlin.de>
Date: Wed, 07 Jan 2026 09:42:13 +0100
From: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To: alexs@...nel.org, "David S. Miller" <davem@...emloft.net>, Andreas
 Larsson	 <andreas@...sler.com>, "open list:SPARC + UltraSPARC
 (sparc/sparc64)"	 <sparclinux@...r.kernel.org>, open list
 <linux-kernel@...r.kernel.org>
Cc: kernel test robot <lkp@...el.com>, Matthew Wilcox <willy@...radead.org>,
  Lorenzo Stoakes <lorenzo.stoakes@...cle.com>, Qi Zheng
 <zhengqi.arch@...edance.com>, Dave Hansen	 <dave.hansen@...ux.intel.com>,
 Zi Yan <ziy@...dia.com>, Kevin Brodsky	 <kevin.brodsky@....com>, Mike
 Rapoport <rppt@...nel.org>, Andrew Morton	 <akpm@...ux-foundation.org>
Subject: Re: [PATCH] arch/sparc: fix unused vaiable warning error

Hi Alex,

On Wed, 2026-01-07 at 14:42 +0800, alexs@...nel.org wrote:
> From: Alex Shi <alexs@...nel.org>
> 
>    arch/sparc/mm/init_64.c: In function 'arch_hugetlb_valid_size':
>    arch/sparc/mm/init_64.c:361:24: warning: variable 'hv_pgsz_idx' set but not used [-Wunused-but-set-variable]
>      361 |         unsigned short hv_pgsz_idx;
>          |                        ^~~~~~~~~~~
> 
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Alex Shi <alexs@...nel.org>
> Cc: sparclinux@...r.kernel.org
> Cc: Matthew Wilcox  <willy@...radead.org>
> Cc: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
> Cc: Qi Zheng <zhengqi.arch@...edance.com>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: Zi Yan <ziy@...dia.com>
> Cc: Kevin Brodsky <kevin.brodsky@....com>
> Cc: Mike Rapoport  <rppt@...nel.org>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Andreas Larsson <andreas@...sler.com>
> Cc: David S. Miller <davem@...emloft.net>
> ---
>  arch/sparc/mm/init_64.c | 6 ------
>  1 file changed, 6 deletions(-)
> 
> diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
> index df9f7c444c39..ba19d23d4040 100644
> --- a/arch/sparc/mm/init_64.c
> +++ b/arch/sparc/mm/init_64.c
> @@ -358,30 +358,24 @@ static void __init pud_huge_patch(void)
>  bool __init arch_hugetlb_valid_size(unsigned long size)
>  {
>  	unsigned int hugepage_shift = ilog2(size);
> -	unsigned short hv_pgsz_idx;
>  	unsigned int hv_pgsz_mask;
>  
>  	switch (hugepage_shift) {
>  	case HPAGE_16GB_SHIFT:
>  		hv_pgsz_mask = HV_PGSZ_MASK_16GB;
> -		hv_pgsz_idx = HV_PGSZ_IDX_16GB;
>  		pud_huge_patch();
>  		break;
>  	case HPAGE_2GB_SHIFT:
>  		hv_pgsz_mask = HV_PGSZ_MASK_2GB;
> -		hv_pgsz_idx = HV_PGSZ_IDX_2GB;
>  		break;
>  	case HPAGE_256MB_SHIFT:
>  		hv_pgsz_mask = HV_PGSZ_MASK_256MB;
> -		hv_pgsz_idx = HV_PGSZ_IDX_256MB;
>  		break;
>  	case HPAGE_SHIFT:
>  		hv_pgsz_mask = HV_PGSZ_MASK_4MB;
> -		hv_pgsz_idx = HV_PGSZ_IDX_4MB;
>  		break;
>  	case HPAGE_64K_SHIFT:
>  		hv_pgsz_mask = HV_PGSZ_MASK_64K;
> -		hv_pgsz_idx = HV_PGSZ_IDX_64K;
>  		break;
>  	default:
>  		hv_pgsz_mask = 0;

Thanks for the patch! Could you fix the typo in the subject?

Thanks,
Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
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