diff mbox

[17/34] ixgbevf: Use pci_enable_msix_range()

Message ID 3d63d58082b8cb80de7f2cb434ca5d83781e8c9f.1391172839.git.agordeev@redhat.com
State Deferred, archived
Delegated to: David Miller
Headers show

Commit Message

Alexander Gordeev Jan. 31, 2014, 3:08 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() and pci_enable_msix_range()
interfaces.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
---
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   33 +++++++-------------
 1 files changed, 12 insertions(+), 21 deletions(-)

Comments

Sergei Shtylyov Jan. 31, 2014, 7:20 p.m. UTC | #1
On 01/31/2014 06:08 PM, 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() and pci_enable_msix_range()
> interfaces.

> Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
> ---
>   drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |   33 +++++++-------------
>   1 files changed, 12 insertions(+), 21 deletions(-)

> diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> index 9df2898..521a9d7 100644
> --- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
> +++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c

> @@ -1831,33 +1830,25 @@ static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
>   	 * Right now, we simply care about how many we'll get; we'll
>   	 * set them up later while requesting irq's.
>   	 */
> -	while (vectors >= vector_threshold) {
> -		err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
> -				      vectors);
> -		if (!err || err < 0) /* Success or a nasty failure. */
> -			break;
> -		else /* err == number of vectors we should try again with */
> -			vectors = err;
> -	}
> +	vectors = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
> +					vector_threshold, vectors);
>
> -	if (vectors < vector_threshold)
> -		err = -ENOMEM;
> -
> -	if (err) {
> +	if (vectors < 0) {
>   		dev_err(&adapter->pdev->dev,
>   			"Unable to allocate MSI-X interrupts\n");
>   		kfree(adapter->msix_entries);
>   		adapter->msix_entries = NULL;
> -	} else {
> -		/*
> -		 * Adjust for only the vectors we'll use, which is minimum
> -		 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
> -		 * vectors we were allocated.
> -		 */
> -		adapter->num_msix_vectors = vectors;
> +		return vectors;
>   	}
>
> -	return err;
> +	/*
> +	 * Adjust for only the vectors we'll use, which is minimum
> +	 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
> +	 * vectors we were allocated.
> +	 */

    Networking code formats multi-line comments slightly differently to the 
rest of the kernel:

/* bla
  * bla
  */

    Although, you're only moving what was there before you, maybe it's a good 
time to get this right.

WBR, Sergei

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diff mbox

Patch

diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 9df2898..521a9d7 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -1817,7 +1817,6 @@  void ixgbevf_reset(struct ixgbevf_adapter *adapter)
 static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
 					int vectors)
 {
-	int err = 0;
 	int vector_threshold;
 
 	/* We'll want at least 2 (vector_threshold):
@@ -1831,33 +1830,25 @@  static int ixgbevf_acquire_msix_vectors(struct ixgbevf_adapter *adapter,
 	 * Right now, we simply care about how many we'll get; we'll
 	 * set them up later while requesting irq's.
 	 */
-	while (vectors >= vector_threshold) {
-		err = pci_enable_msix(adapter->pdev, adapter->msix_entries,
-				      vectors);
-		if (!err || err < 0) /* Success or a nasty failure. */
-			break;
-		else /* err == number of vectors we should try again with */
-			vectors = err;
-	}
+	vectors = pci_enable_msix_range(adapter->pdev, adapter->msix_entries,
+					vector_threshold, vectors);
 
-	if (vectors < vector_threshold)
-		err = -ENOMEM;
-
-	if (err) {
+	if (vectors < 0) {
 		dev_err(&adapter->pdev->dev,
 			"Unable to allocate MSI-X interrupts\n");
 		kfree(adapter->msix_entries);
 		adapter->msix_entries = NULL;
-	} else {
-		/*
-		 * Adjust for only the vectors we'll use, which is minimum
-		 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
-		 * vectors we were allocated.
-		 */
-		adapter->num_msix_vectors = vectors;
+		return vectors;
 	}
 
-	return err;
+	/*
+	 * Adjust for only the vectors we'll use, which is minimum
+	 * of max_msix_q_vectors + NON_Q_VECTORS, or the number of
+	 * vectors we were allocated.
+	 */
+	adapter->num_msix_vectors = vectors;
+
+	return 0;
 }
 
 /**