linux-kernel - RE: [PATCH 5/9] drivers/scsi: Eliminate useless code

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Date:	Thu, 21 Jan 2010 16:16:32 -0800
From:	Jing Huang <huangj@...cade.COM>
To:	Julia Lawall <julia@...u.dk>,
	"James E.J. Bottomley" <James.Bottomley@...e.de>,
	"linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>
Subject: RE: [PATCH 5/9] drivers/scsi: Eliminate useless code

Acked-by: Jing Huang <huangj@...cade.com>

> -----Original Message-----
> From: Julia Lawall [mailto:julia@...u.dk]
> Sent: Saturday, January 16, 2010 7:59 AM
> To: Jing Huang; James E.J. Bottomley; linux-scsi@...r.kernel.org; linux-
> kernel@...r.kernel.org; kernel-janitors@...r.kernel.org
> Subject: [PATCH 5/9] drivers/scsi: Eliminate useless code
> 
> From: Julia Lawall <julia@...u.dk>
> 
> The variable bfa_itnim is initialized twice to the same (side effect-free)
> expression.  Drop one initialization.
> 
> A simplified version of the semantic match that finds this problem is:
> (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @forall@
> idexpression *x;
> identifier f!=ERR_PTR;
> @@
> 
> x = f(...)
> ... when != x
> (
> x = f(...,<+...x...+>,...)
> |
> * x = f(...)
> )
> // </smpl>
> 
> Signed-off-by: Julia Lawall <julia@...u.dk>
> 
> ---
>  drivers/scsi/bfa/bfad_im.c          |    1 -
>  1 files changed, 0 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/scsi/bfa/bfad_im.c b/drivers/scsi/bfa/bfad_im.c
> index f788c2a..37b0fa1 100644
> --- a/drivers/scsi/bfa/bfad_im.c
> +++ b/drivers/scsi/bfa/bfad_im.c
> @@ -243,9 +243,8 @@ bfad_im_target_reset_send(struct bfad_s *bfad, struct
> scsi_cmnd *cmnd,
>  	struct bfa_itnim_s *bfa_itnim;
>  	bfa_status_t    rc = BFA_STATUS_OK;
> 
> -	bfa_itnim = bfa_fcs_itnim_get_halitn(&itnim->fcs_itnim);
>  	tskim = bfa_tskim_alloc(&bfad->bfa, (struct bfad_tskim_s *) cmnd);
>  	if (!tskim) {
>  		BFA_DEV_PRINTF(bfad, BFA_ERR,
--
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