linux-kernel - Re: [PATCH v2 09/15] NULL noise: drivers/scsi/FlashPoint.c

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Date:	Thu, 05 Mar 2009 20:05:46 +0000
From:	James Bottomley <James.Bottomley@...senPartnership.com>
To:	Hannes Eder <hannes@...neseder.net>
Cc:	trivial@...nel.org, kernel-janitors@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-scsi <linux-scsi@...r.kernel.org>
Subject: Re: [PATCH v2 09/15] NULL noise: drivers/scsi/FlashPoint.c

On Thu, 2009-03-05 at 20:16 +0100, Hannes Eder wrote:
> Fix this sparse warnings:
>   drivers/scsi/FlashPoint.c:906:9: warning: Using plain integer as NULL pointer
>   drivers/scsi/FlashPoint.c:907:53: warning: Using plain integer as NULL pointer
>   drivers/scsi/FlashPoint.c:922:1: warning: Using plain integer as NULL pointer
> 
> Signed-off-by: Hannes Eder <hannes@...neseder.net>
> ---
> v2: fix checkpatch.pl issue.
> v2.1: other subject, as suggested by Al Viro
> 
>  drivers/scsi/FlashPoint.c |    7 +++----
>  1 files changed, 3 insertions(+), 4 deletions(-)
> 
> diff --git a/drivers/scsi/FlashPoint.c b/drivers/scsi/FlashPoint.c
> index b898d38..9eb2e86 100644
> --- a/drivers/scsi/FlashPoint.c
> +++ b/drivers/scsi/FlashPoint.c
> @@ -903,8 +903,8 @@ static void FPT_autoCmdCmplt(unsigned long p_port, unsigned char p_card);
>  static void FPT_autoLoadDefaultMap(unsigned long p_port);
>  
>  static struct sccb_mgr_tar_info FPT_sccbMgrTbl[MAX_CARDS][MAX_SCSI_TAR] =
> L-    { {{0}} };
> -static struct sccb_card FPT_BL_Card[MAX_CARDS] = { {0} };
> +    { { {NULL} } };
> +static struct sccb_card FPT_BL_Card[MAX_CARDS] = { {NULL} };
>  static SCCBSCAM_INFO FPT_scamInfo[MAX_SCSI_TAR] = { {{0}} };
>  static struct nvram_info FPT_nvRamInfo[MAX_MB_CARDS] = { {0} };

This doesn't look right:  {0} as a structure initialiser is a C
convention for zero fill this structure; sparse should recognise this.
Of course, since these structures are static, they should be in BSS
anyway ...

> @@ -918,8 +918,7 @@ static unsigned char FPT_scamHAString[] =
>  
>  static unsigned short FPT_default_intena = 0;
>  
> -static void (*FPT_s_PhaseTbl[8]) (unsigned long, unsigned char) = {
> -0};
> +static void (*FPT_s_PhaseTbl[8]) (unsigned long, unsigned char) = {NULL};
>  
>  /*---------------------------------------------------------------------
>   *

James


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