linux-kernel - Re: [patch -resend] [SCSI] megaraid: cleanup type issue in mega_build

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Message-ID: <CAHtARFFsPbpZUBkj3d8UDXiHrKBqGCFOGu7oLhy9qfRapF7RMQ@mail.gmail.com>
Date:	Wed, 27 Jun 2012 15:36:29 -0700
From:	adam radford <aradford@...il.com>
To:	Dan Carpenter <dan.carpenter@...cle.com>
Cc:	Neela Syam Kolli <megaraidlinux@....com>,
	"James E.J. Bottomley" <JBottomley@...allels.com>,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	kernel-janitors@...r.kernel.org
Subject: Re: [patch -resend] [SCSI] megaraid: cleanup type issue in mega_build_cmd()

On Wed, Jun 27, 2012 at 2:08 AM, Dan Carpenter <dan.carpenter@...cle.com> wrote:
> On 64 bit systems the current code sets 32 bits of "seg" and leaves the
> other 32 uninitialized.  It doesn't matter since the variable is never
> used.  But it's still messy and we should fix it.
>
> Signed-off-by: Dan Carpenter <dan.carpenter@...cle.com>
> ---
> Originally sent on Fri, 2 Mar 2012.
>
> diff --git a/drivers/scsi/megaraid.c b/drivers/scsi/megaraid.c
> index 4d39a9f..97825f1 100644
> --- a/drivers/scsi/megaraid.c
> +++ b/drivers/scsi/megaraid.c
> @@ -524,7 +524,7 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
>        mega_passthru   *pthru;
>        scb_t   *scb;
>        mbox_t  *mbox;
> -       long    seg;
> +       u32     seg;
>        char    islogical;
>        int     max_ldrv_num;
>        int     channel = 0;
> @@ -858,7 +858,7 @@ mega_build_cmd(adapter_t *adapter, Scsi_Cmnd *cmd, int *busy)
>
>                        /* Calculate Scatter-Gather info */
>                        mbox->m_out.numsgelements = mega_build_sglist(adapter, scb,
> -                                       (u32 *)&mbox->m_out.xferaddr, (u32 *)&seg);
> +                                       (u32 *)&mbox->m_out.xferaddr, &seg);
>
>                        return scb;
>
> --
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Acked-by: Adam Radford <aradford@...il.com>
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