linux-kernel - Re: [PATCH] scsi: lpfc: lpfc_init: use kcalloc for allocating memory

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Date:	Tue, 08 Apr 2014 17:04:26 -0700
From:	Joe Perches <joe@...ches.com>
To:	Matei Oprea <eu@...eamatei.ro>
Cc:	jbottomley@...allels.com, linux-scsi@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	ROSEdu Kernel Community <firefly@...ts.rosedu.org>
Subject: Re: [PATCH] scsi: lpfc: lpfc_init: use kcalloc for allocating memory

On Tue, 2014-04-08 at 23:42 +0300, Matei Oprea wrote:
> It's easier to use kcalloc for allocating arrays. While at it
> also remove useless casting value.
[]
> diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
[]
> @@ -4742,12 +4742,14 @@ lpfc_sli_driver_resource_setup(struct lpfc_hba *phba)
[]
> -	if (!phba->sli.ring)
[]
> +	if (unlikely(!phba->sli.ring)) {

Why add the unlikely?

Glancing at the code it seems more like that this
should be likely than unlikely.

> +		phba->sli.ring = kcalloc(LPFC_SLI3_MAX_RING,
> +				sizeof(struct lpfc_sli_ring),
> +				GFP_KERNEL);

It'd be nicer looking if aligned better

		phba->sli.ring = kcalloc(LPFC_SLI3_MAX_RING,
					 sizeof(struct lpfc_sli_ring),
					 GFP_KERNEL);


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