linux-kernel - Re: [PATCH v2] mm: Fix ERROR:do not initialise statics to 0 or NULL in memblock.c

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Date:   Wed, 3 Nov 2021 19:11:08 +0200
From:   Mike Rapoport <rppt@...nel.org>
To:     Kushal Kothari <kushalkothari285@...il.com>
Cc:     akpm@...ux-foundation.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, mike.rapoport@...il.com,
        kushalkothari2850@...il.com
Subject: Re: [PATCH v2] mm: Fix ERROR:do not initialise statics to 0 or NULL
 in memblock.c

Hi,

On Wed, Nov 03, 2021 at 06:15:23PM +0530, Kushal Kothari wrote:
> Subject: mm: Fix ERROR:do not initialise statics to 0 or NULL in memblock.c

Please use mm/memblock: or just memblock: prefix for memblock patches.
Besides, this patch does not fix a real error, it's only style fixup, so
"Fix ERROR" should be omitted here.

> The default value of static variable is zero and bool is false so
> not need to set it here.
> This patch fixes this ERROR in memblock.c
> Error found with checkpatch.pl.

Again, this is not a real error in the code but rather a coding style
inconsistency. Please update the changelog text to reflect this.
 
> Signed-off-by: Kushal Kothari <kushalkothari285@...il.com>
> ---
> 
> Changes in v2: Correct the subject line and remove <stdbool.h> which isn't
> necessary 
> 
>  mm/memblock.c | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
> 
> diff --git a/mm/memblock.c b/mm/memblock.c
> index 5c3503c98b2f..9e2b7c1dbd03 100644
> --- a/mm/memblock.c
> +++ b/mm/memblock.c
> @@ -152,10 +152,10 @@ static __refdata struct memblock_type *memblock_memory = &memblock.memory;
>  	} while (0)
>  
>  static int memblock_debug __initdata_memblock;
> -static bool system_has_some_mirror __initdata_memblock = false;
> +static bool system_has_some_mirror __initdata_memblock;
>  static int memblock_can_resize __initdata_memblock;
> -static int memblock_memory_in_slab __initdata_memblock = 0;
> -static int memblock_reserved_in_slab __initdata_memblock = 0;
> +static int memblock_memory_in_slab __initdata_memblock;
> +static int memblock_reserved_in_slab __initdata_memblock;
>  
>  static enum memblock_flags __init_memblock choose_memblock_flags(void)
>  {
> -- 
> 2.25.1
> 

-- 
Sincerely yours,
Mike.