linux-kernel - Re: [PATCH 1/2] openrisc: mm/init.c: remove unused memblock_region variable in map

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Date:   Mon, 10 May 2021 06:17:13 +0900
From:   Stafford Horne <shorne@...il.com>
To:     Mike Rapoport <rppt@...nel.org>
Cc:     Jonas Bonn <jonas@...thpole.se>,
        Stefan Kristiansson <stefan.kristiansson@...nalahti.fi>,
        Mike Rapoport <rppt@...ux.ibm.com>,
        openrisc@...ts.librecores.org, linux-kernel@...r.kernel.org,
        kernel test robot <lkp@...el.com>
Subject: Re: [PATCH 1/2] openrisc: mm/init.c: remove unused memblock_region
 variable in map_ram()

On Sun, May 09, 2021 at 12:11:02PM +0300, Mike Rapoport wrote:
> From: Mike Rapoport <rppt@...ux.ibm.com>
> 
> Kernel test robot reports:
> 
> cppcheck possible warnings: (new ones prefixed by >>, may not real problems)
> 
> >> arch/openrisc/mm/init.c:125:10: warning: Uninitialized variable: region [uninitvar]
>             region->base, region->base + region->size);
>             ^
> 
> Replace usage of memblock_region fields with 'start' and 'end' variables
> that are initialized in for_each_mem_range() and remove the declaration of
> region.
> 
> Fixes: b10d6bca8720 ("arch, drivers: replace for_each_membock() with for_each_mem_range()")
> Reported-by: kernel test robot <lkp@...el.com>
> Signed-off-by: Mike Rapoport <rppt@...ux.ibm.com>
> ---
>  arch/openrisc/mm/init.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> 
> diff --git a/arch/openrisc/mm/init.c b/arch/openrisc/mm/init.c
> index bf9b2310fc93..f3fa02b8838a 100644
> --- a/arch/openrisc/mm/init.c
> +++ b/arch/openrisc/mm/init.c
> @@ -75,7 +75,6 @@ static void __init map_ram(void)
>  	/* These mark extents of read-only kernel pages...
>  	 * ...from vmlinux.lds.S
>  	 */
> -	struct memblock_region *region;
>  
>  	v = PAGE_OFFSET;
>  
> @@ -121,7 +120,7 @@ static void __init map_ram(void)
>  		}
>  
>  		printk(KERN_INFO "%s: Memory: 0x%x-0x%x\n", __func__,
> -		       region->base, region->base + region->size);
> +		       start, end);
>  	}
>  }

Thanks I will queue this.

-Stafford