diff mbox

[v2,RESEND,21/23] qla2xxx: Use pci_enable_msix_range() instead of pci_enable_msix()

Message ID cf38d1596543fd61c099bc0b834c2ea7a11f8b28.1405533479.git.agordeev@redhat.com (mailing list archive)
State New, archived
Delegated to: Bjorn Helgaas
Headers show

Commit Message

Alexander Gordeev July 16, 2014, 6:05 p.m. UTC
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.

Log message code 0x00c6 preserved, although it is reported
after successful call to pci_enable_msix_range(), not before
possibly unsuccessful call to pci_enable_msix(). Consumers
of the error code should not notice the difference.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Cc: qla2xxx-upstream@qlogic.com
Cc: linux-scsi@vger.kernel.org
Cc: linux-pci@vger.kernel.org
---
 drivers/scsi/qla2xxx/qla_isr.c |   27 +++++++++++----------------
 1 files changed, 11 insertions(+), 16 deletions(-)

Comments

Alexander Gordeev July 26, 2014, 8:40 a.m. UTC | #1
On Wed, Jul 16, 2014 at 08:05:25PM +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.
> 
> Log message code 0x00c6 preserved, although it is reported
> after successful call to pci_enable_msix_range(), not before
> possibly unsuccessful call to pci_enable_msix(). Consumers
> of the error code should not notice the difference.

Hello,

Could someone review this patch, please?

Thanks!

> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> Cc: qla2xxx-upstream@qlogic.com
> Cc: linux-scsi@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> ---
>  drivers/scsi/qla2xxx/qla_isr.c |   27 +++++++++++----------------
>  1 files changed, 11 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
> index a56825c..52d420f 100644
> --- a/drivers/scsi/qla2xxx/qla_isr.c
> +++ b/drivers/scsi/qla2xxx/qla_isr.c
> @@ -2923,27 +2923,22 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
>  	for (i = 0; i < ha->msix_count; i++)
>  		entries[i].entry = i;
>  
> -	ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
> -	if (ret) {
> -		if (ret < MIN_MSIX_COUNT)
> -			goto msix_failed;
> -
> +	ret = pci_enable_msix_range(ha->pdev,
> +				    entries, MIN_MSIX_COUNT, ha->msix_count);
> +	if (ret < 0) {
> +		ql_log(ql_log_fatal, vha, 0x00c7,
> +		    "MSI-X: Failed to enable support, "
> +		    "giving   up -- %d/%d.\n",
> +		    ha->msix_count, ret);
> +		goto msix_out;
> +	} else if (ret < ha->msix_count) {
>  		ql_log(ql_log_warn, vha, 0x00c6,
>  		    "MSI-X: Failed to enable support "
>  		    "-- %d/%d\n Retry with %d vectors.\n",
>  		    ha->msix_count, ret, ret);
> -		ha->msix_count = ret;
> -		ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
> -		if (ret) {
> -msix_failed:
> -			ql_log(ql_log_fatal, vha, 0x00c7,
> -			    "MSI-X: Failed to enable support, "
> -			    "giving   up -- %d/%d.\n",
> -			    ha->msix_count, ret);
> -			goto msix_out;
> -		}
> -		ha->max_rsp_queues = ha->msix_count - 1;
>  	}
> +	ha->msix_count = ret;
> +	ha->max_rsp_queues = ha->msix_count - 1;
>  	ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
>  				ha->msix_count, GFP_KERNEL);
>  	if (!ha->msix_entries) {
> -- 
> 1.7.7.6
>
Alexander Gordeev Aug. 11, 2014, 8:57 a.m. UTC | #2
On Wed, Jul 16, 2014 at 08:05:25PM +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.
> 
> Log message code 0x00c6 preserved, although it is reported
> after successful call to pci_enable_msix_range(), not before
> possibly unsuccessful call to pci_enable_msix(). Consumers
> of the error code should not notice the difference.

Hello,

Please, anyone (from QLogic especially) review this patch.

Thanks!

> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> Cc: qla2xxx-upstream@qlogic.com
> Cc: linux-scsi@vger.kernel.org
> Cc: linux-pci@vger.kernel.org
> ---
>  drivers/scsi/qla2xxx/qla_isr.c |   27 +++++++++++----------------
>  1 files changed, 11 insertions(+), 16 deletions(-)
> 
> diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
> index a56825c..52d420f 100644
> --- a/drivers/scsi/qla2xxx/qla_isr.c
> +++ b/drivers/scsi/qla2xxx/qla_isr.c
> @@ -2923,27 +2923,22 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
>  	for (i = 0; i < ha->msix_count; i++)
>  		entries[i].entry = i;
>  
> -	ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
> -	if (ret) {
> -		if (ret < MIN_MSIX_COUNT)
> -			goto msix_failed;
> -
> +	ret = pci_enable_msix_range(ha->pdev,
> +				    entries, MIN_MSIX_COUNT, ha->msix_count);
> +	if (ret < 0) {
> +		ql_log(ql_log_fatal, vha, 0x00c7,
> +		    "MSI-X: Failed to enable support, "
> +		    "giving   up -- %d/%d.\n",
> +		    ha->msix_count, ret);
> +		goto msix_out;
> +	} else if (ret < ha->msix_count) {
>  		ql_log(ql_log_warn, vha, 0x00c6,
>  		    "MSI-X: Failed to enable support "
>  		    "-- %d/%d\n Retry with %d vectors.\n",
>  		    ha->msix_count, ret, ret);
> -		ha->msix_count = ret;
> -		ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
> -		if (ret) {
> -msix_failed:
> -			ql_log(ql_log_fatal, vha, 0x00c7,
> -			    "MSI-X: Failed to enable support, "
> -			    "giving   up -- %d/%d.\n",
> -			    ha->msix_count, ret);
> -			goto msix_out;
> -		}
> -		ha->max_rsp_queues = ha->msix_count - 1;
>  	}
> +	ha->msix_count = ret;
> +	ha->max_rsp_queues = ha->msix_count - 1;
>  	ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
>  				ha->msix_count, GFP_KERNEL);
>  	if (!ha->msix_entries) {
> -- 
> 1.7.7.6
> 
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Chad Dupuis Aug. 11, 2014, 6:07 p.m. UTC | #3
On Mon, 11 Aug 2014, Alexander Gordeev wrote:

> On Wed, Jul 16, 2014 at 08:05:25PM +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.
>>
>> Log message code 0x00c6 preserved, although it is reported
>> after successful call to pci_enable_msix_range(), not before
>> possibly unsuccessful call to pci_enable_msix(). Consumers
>> of the error code should not notice the difference.
>
> Hello,
>
> Please, anyone (from QLogic especially) review this patch.
>
> Thanks!

Looks good.

Ack-by: Chad Dupuis <chad.dupuis@qlogic.com>

>
>> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
>> Cc: qla2xxx-upstream@qlogic.com
>> Cc: linux-scsi@vger.kernel.org
>> Cc: linux-pci@vger.kernel.org
>> ---
>>  drivers/scsi/qla2xxx/qla_isr.c |   27 +++++++++++----------------
>>  1 files changed, 11 insertions(+), 16 deletions(-)
>>
>> diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
>> index a56825c..52d420f 100644
>> --- a/drivers/scsi/qla2xxx/qla_isr.c
>> +++ b/drivers/scsi/qla2xxx/qla_isr.c
>> @@ -2923,27 +2923,22 @@ qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
>>  	for (i = 0; i < ha->msix_count; i++)
>>  		entries[i].entry = i;
>>
>> -	ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
>> -	if (ret) {
>> -		if (ret < MIN_MSIX_COUNT)
>> -			goto msix_failed;
>> -
>> +	ret = pci_enable_msix_range(ha->pdev,
>> +				    entries, MIN_MSIX_COUNT, ha->msix_count);
>> +	if (ret < 0) {
>> +		ql_log(ql_log_fatal, vha, 0x00c7,
>> +		    "MSI-X: Failed to enable support, "
>> +		    "giving   up -- %d/%d.\n",
>> +		    ha->msix_count, ret);
>> +		goto msix_out;
>> +	} else if (ret < ha->msix_count) {
>>  		ql_log(ql_log_warn, vha, 0x00c6,
>>  		    "MSI-X: Failed to enable support "
>>  		    "-- %d/%d\n Retry with %d vectors.\n",
>>  		    ha->msix_count, ret, ret);
>> -		ha->msix_count = ret;
>> -		ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
>> -		if (ret) {
>> -msix_failed:
>> -			ql_log(ql_log_fatal, vha, 0x00c7,
>> -			    "MSI-X: Failed to enable support, "
>> -			    "giving   up -- %d/%d.\n",
>> -			    ha->msix_count, ret);
>> -			goto msix_out;
>> -		}
>> -		ha->max_rsp_queues = ha->msix_count - 1;
>>  	}
>> +	ha->msix_count = ret;
>> +	ha->max_rsp_queues = ha->msix_count - 1;
>>  	ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
>>  				ha->msix_count, GFP_KERNEL);
>>  	if (!ha->msix_entries) {
>> --
>> 1.7.7.6
>>
>
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diff mbox

Patch

diff --git a/drivers/scsi/qla2xxx/qla_isr.c b/drivers/scsi/qla2xxx/qla_isr.c
index a56825c..52d420f 100644
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -2923,27 +2923,22 @@  qla24xx_enable_msix(struct qla_hw_data *ha, struct rsp_que *rsp)
 	for (i = 0; i < ha->msix_count; i++)
 		entries[i].entry = i;
 
-	ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
-	if (ret) {
-		if (ret < MIN_MSIX_COUNT)
-			goto msix_failed;
-
+	ret = pci_enable_msix_range(ha->pdev,
+				    entries, MIN_MSIX_COUNT, ha->msix_count);
+	if (ret < 0) {
+		ql_log(ql_log_fatal, vha, 0x00c7,
+		    "MSI-X: Failed to enable support, "
+		    "giving   up -- %d/%d.\n",
+		    ha->msix_count, ret);
+		goto msix_out;
+	} else if (ret < ha->msix_count) {
 		ql_log(ql_log_warn, vha, 0x00c6,
 		    "MSI-X: Failed to enable support "
 		    "-- %d/%d\n Retry with %d vectors.\n",
 		    ha->msix_count, ret, ret);
-		ha->msix_count = ret;
-		ret = pci_enable_msix(ha->pdev, entries, ha->msix_count);
-		if (ret) {
-msix_failed:
-			ql_log(ql_log_fatal, vha, 0x00c7,
-			    "MSI-X: Failed to enable support, "
-			    "giving   up -- %d/%d.\n",
-			    ha->msix_count, ret);
-			goto msix_out;
-		}
-		ha->max_rsp_queues = ha->msix_count - 1;
 	}
+	ha->msix_count = ret;
+	ha->max_rsp_queues = ha->msix_count - 1;
 	ha->msix_entries = kzalloc(sizeof(struct qla_msix_entry) *
 				ha->msix_count, GFP_KERNEL);
 	if (!ha->msix_entries) {