linux-kernel - Re: [PATCH v2 RESEND 18/23] pm8001: Use pci_enable_msix_exact() instead of pci_enable

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Message-ID: <20140726083301.GI21129@agordeev.usersys.redhat.com>
Date:	Sat, 26 Jul 2014 09:33:02 +0100
From:	Alexander Gordeev <agordeev@...hat.com>
To:	linux-kernel@...r.kernel.org
Cc:	xjtuwjp@...il.com, lindar_liu@...sh.com,
	linux-scsi@...r.kernel.org, linux-pci@...r.kernel.org
Subject: Re: [PATCH v2 RESEND 18/23] pm8001: Use pci_enable_msix_exact()
 instead of pci_enable_msix()

On Wed, Jul 16, 2014 at 08:05:22PM +0200, Alexander Gordeev wrote:
> As result of deprecation of MSI-X/MSI enablement functions
> pci_enable_msix() and pci_enable_msi_block() all drivers
> using these two interfaces need to be updated to use the
> new pci_enable_msi_range()  or pci_enable_msi_exact()
> and pci_enable_msix_range() or pci_enable_msix_exact()
> interfaces.

Hi Jack, Lindar,

Could you please review this patch?

Thanks!

> Signed-off-by: Alexander Gordeev <agordeev@...hat.com>
> Cc: xjtuwjp@...il.com
> Cc: lindar_liu@...sh.com
> Cc: linux-scsi@...r.kernel.org
> Cc: linux-pci@...r.kernel.org
> ---
>  drivers/scsi/pm8001/pm8001_init.c |   39 +++++++++++++++++++------------------
>  1 files changed, 20 insertions(+), 19 deletions(-)
> 
> diff --git a/drivers/scsi/pm8001/pm8001_init.c b/drivers/scsi/pm8001/pm8001_init.c
> index e837ece..4057c24 100644
> --- a/drivers/scsi/pm8001/pm8001_init.c
> +++ b/drivers/scsi/pm8001/pm8001_init.c
> @@ -729,34 +729,35 @@ static u32 pm8001_setup_msix(struct pm8001_hba_info *pm8001_ha)
>  		sizeof(pm8001_ha->msix_entries[0]);
>  	for (i = 0; i < max_entry ; i++)
>  		pm8001_ha->msix_entries[i].entry = i;
> -	rc = pci_enable_msix(pm8001_ha->pdev, pm8001_ha->msix_entries,
> +	rc = pci_enable_msix_exact(pm8001_ha->pdev, pm8001_ha->msix_entries,
>  		number_of_intr);
>  	pm8001_ha->number_of_intr = number_of_intr;
> -	if (!rc) {
> -		PM8001_INIT_DBG(pm8001_ha, pm8001_printk(
> -			"pci_enable_msix request ret:%d no of intr %d\n",
> -					rc, pm8001_ha->number_of_intr));
> +	if (rc)
> +		return rc;
>  
> +	PM8001_INIT_DBG(pm8001_ha, pm8001_printk(
> +		"pci_enable_msix_exact request ret:%d no of intr %d\n",
> +				rc, pm8001_ha->number_of_intr));
>  
> -		for (i = 0; i < number_of_intr; i++) {
> -			snprintf(intr_drvname[i], sizeof(intr_drvname[0]),
> -					DRV_NAME"%d", i);
> -			pm8001_ha->irq_vector[i].irq_id = i;
> -			pm8001_ha->irq_vector[i].drv_inst = pm8001_ha;
> +	for (i = 0; i < number_of_intr; i++) {
> +		snprintf(intr_drvname[i], sizeof(intr_drvname[0]),
> +				DRV_NAME"%d", i);
> +		pm8001_ha->irq_vector[i].irq_id = i;
> +		pm8001_ha->irq_vector[i].drv_inst = pm8001_ha;
>  
> -			rc = request_irq(pm8001_ha->msix_entries[i].vector,
> -				pm8001_interrupt_handler_msix, flag,
> -				intr_drvname[i], &(pm8001_ha->irq_vector[i]));
> -			if (rc) {
> -				for (j = 0; j < i; j++)
> -					free_irq(
> -					pm8001_ha->msix_entries[j].vector,
> +		rc = request_irq(pm8001_ha->msix_entries[i].vector,
> +			pm8001_interrupt_handler_msix, flag,
> +			intr_drvname[i], &(pm8001_ha->irq_vector[i]));
> +		if (rc) {
> +			for (j = 0; j < i; j++) {
> +				free_irq(pm8001_ha->msix_entries[j].vector,
>  					&(pm8001_ha->irq_vector[i]));
> -				pci_disable_msix(pm8001_ha->pdev);
> -				break;
>  			}
> +			pci_disable_msix(pm8001_ha->pdev);
> +			break;
>  		}
>  	}
> +
>  	return rc;
>  }
>  #endif
> -- 
> 1.7.7.6
> 

-- 
Regards,
Alexander Gordeev
agordeev@...hat.com
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