linux-kernel - Re: [PATCH] scsi: be2iscsi: Use kasprintf

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Date:   Wed, 11 Oct 2017 12:24:32 +0530
From:   Himanshu Jha <himanshujha199640@...il.com>
To:     Kyle Fortin <kyle.fortin@...cle.com>
Cc:     jejb@...ux.vnet.ibm.com, martin.petersen@...cle.com,
        subbu.seetharaman@...adcom.com, ketan.mukadam@...adcom.com,
        jitendra.bhivare@...adcom.com, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scsi: be2iscsi: Use kasprintf

On Tue, Oct 10, 2017 at 05:54:15PM -0400, Kyle Fortin wrote:
> Hi Himanshu,
> 
> On Oct 6, 2017, at 2:57 PM, Himanshu Jha <himanshujha199640@...il.com> wrote:
> > 
> > Use kasprintf instead of combination of kmalloc and sprintf.
> > 
> > Signed-off-by: Himanshu Jha <himanshujha199640@...il.com>
> > ---
> > drivers/scsi/be2iscsi/be_main.c | 12 +++++-------
> > 1 file changed, 5 insertions(+), 7 deletions(-)
> > 
> > diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c
> > index b4542e7..6a9ee0e 100644
> > --- a/drivers/scsi/be2iscsi/be_main.c
> > +++ b/drivers/scsi/be2iscsi/be_main.c
> > @@ -803,15 +803,14 @@ static int beiscsi_init_irqs(struct beiscsi_hba *phba)
> > 
> > 	if (pcidev->msix_enabled) {
> > 		for (i = 0; i < phba->num_cpus; i++) {
> > -			phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME,
> > -						    GFP_KERNEL);
> > +			phba->msi_name[i] = kasprintf(GFP_KERNEL,
> > +						      "beiscsi_%02x_%02x",
> > +						      phba->shost->host_no, i);
> > 			if (!phba->msi_name[i]) {
> > 				ret = -ENOMEM;
> > 				goto free_msix_irqs;
> > 			}
> > 
> > -			sprintf(phba->msi_name[i], "beiscsi_%02x_%02x",
> > -				phba->shost->host_no, i);
> > 			ret = request_irq(pci_irq_vector(pcidev, i),
> > 					  be_isr_msix, 0, phba->msi_name[i],
> > 					  &phwi_context->be_eq[i]);
> > @@ -824,13 +823,12 @@ static int beiscsi_init_irqs(struct beiscsi_hba *phba)
> > 				goto free_msix_irqs;
> > 			}
> > 		}
> > -		phba->msi_name[i] = kzalloc(BEISCSI_MSI_NAME, GFP_KERNEL);
> > +		phba->msi_name[i] = kasprintf(GFP_KERNEL, "beiscsi_mcc_%02x",
> > +					      phba->shost->host_no);
> > 		if (!phba->msi_name[i]) {
> > 			ret = -ENOMEM;
> > 			goto free_msix_irqs;
> > 		}
> > -		sprintf(phba->msi_name[i], "beiscsi_mcc_%02x",
> > -			phba->shost->host_no);
> > 		ret = request_irq(pci_irq_vector(pcidev, i), be_isr_mcc, 0,
> > 				  phba->msi_name[i], &phwi_context->be_eq[i]);
> > 		if (ret) {
> > -- 
> > 2.7.4
> 
> Since you are getting rid of the only use for BEISCSI_MSI_NAME within drivers/scsi/be2iscsi/be_main.h, that should be removed too.

Yes, that should be removed! Thanks for pointing that out.
I will send a v2 patch with the update.

> --
> Kyle Fortin - Oracle Linux Engineering
> 
> 
> 
>