mlx4: Replace PCI pool old API

The PCI pool API is deprecated. This commit replaces the PCI pool old
API by the appropriate function with the DMA pool API.

Signed-off-by: Romain Perier <romain.perier@collabora.com>
Acked-by: Peter Senna Tschudin <peter.senna@collabora.com>
Tested-by: Peter Senna Tschudin <peter.senna@collabora.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Doug Ledford <dledford@redhat.com>
Tested-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/net/ethernet/mellanox/mlx4/cmd.c

@@ -2535,8 +2535,8 @@ int mlx4_cmd_init(struct mlx4_dev *dev)
 	}
 
 	if (!priv->cmd.pool) {
-		priv->cmd.pool = pci_pool_create("mlx4_cmd",
-						 dev->persist->pdev,
+		priv->cmd.pool = dma_pool_create("mlx4_cmd",
+						 &dev->persist->pdev->dev,
 						 MLX4_MAILBOX_SIZE,
 						 MLX4_MAILBOX_SIZE, 0);
 		if (!priv->cmd.pool)
@@ -2607,7 +2607,7 @@ void mlx4_cmd_cleanup(struct mlx4_dev *dev, int cleanup_mask)
 	struct mlx4_priv *priv = mlx4_priv(dev);
 
 	if (priv->cmd.pool && (cleanup_mask & MLX4_CMD_CLEANUP_POOL)) {
-		pci_pool_destroy(priv->cmd.pool);
+		dma_pool_destroy(priv->cmd.pool);
 		priv->cmd.pool = NULL;
 	}
 
@@ -2699,7 +2699,7 @@ struct mlx4_cmd_mailbox *mlx4_alloc_cmd_mailbox(struct mlx4_dev *dev)
 	if (!mailbox)
 		return ERR_PTR(-ENOMEM);
 
-	mailbox->buf = pci_pool_zalloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
+	mailbox->buf = dma_pool_zalloc(mlx4_priv(dev)->cmd.pool, GFP_KERNEL,
 				       &mailbox->dma);
 	if (!mailbox->buf) {
 		kfree(mailbox);
@@ -2716,7 +2716,7 @@ void mlx4_free_cmd_mailbox(struct mlx4_dev *dev,
 	if (!mailbox)
 		return;
 
-	pci_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
+	dma_pool_free(mlx4_priv(dev)->cmd.pool, mailbox->buf, mailbox->dma);
 	kfree(mailbox);
 }
 EXPORT_SYMBOL_GPL(mlx4_free_cmd_mailbox);

drivers/net/ethernet/mellanox/mlx4/mlx4.h

@@ -626,7 +626,7 @@ struct mlx4_mgm {
 };
 
 struct mlx4_cmd {
-	struct pci_pool	       *pool;
+	struct dma_pool	       *pool;
 	void __iomem	       *hcr;
 	struct mutex		slave_cmd_mutex;
 	struct semaphore	poll_sem;