mlx5: 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>
Reviewed-by: Peter Senna Tschudin <peter.senna@collabora.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/mlx5/core/cmd.c

@@ -1095,7 +1095,7 @@ static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev,
 	if (!mailbox)
 		return ERR_PTR(-ENOMEM);
 
-	mailbox->buf = pci_pool_zalloc(dev->cmd.pool, flags,
+	mailbox->buf = dma_pool_zalloc(dev->cmd.pool, flags,
 				       &mailbox->dma);
 	if (!mailbox->buf) {
 		mlx5_core_dbg(dev, "failed allocation\n");
@@ -1110,7 +1110,7 @@ static struct mlx5_cmd_mailbox *alloc_cmd_box(struct mlx5_core_dev *dev,
 static void free_cmd_box(struct mlx5_core_dev *dev,
 			 struct mlx5_cmd_mailbox *mailbox)
 {
-	pci_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
+	dma_pool_free(dev->cmd.pool, mailbox->buf, mailbox->dma);
 	kfree(mailbox);
 }
 
@@ -1759,7 +1759,8 @@ int mlx5_cmd_init(struct mlx5_core_dev *dev)
 		return -EINVAL;
 	}
 
-	cmd->pool = pci_pool_create("mlx5_cmd", dev->pdev, size, align, 0);
+	cmd->pool = dma_pool_create("mlx5_cmd", &dev->pdev->dev, size, align,
+				    0);
 	if (!cmd->pool)
 		return -ENOMEM;
 
@@ -1849,7 +1850,7 @@ int mlx5_cmd_init(struct mlx5_core_dev *dev)
 	free_cmd_page(dev, cmd);
 
 err_free_pool:
-	pci_pool_destroy(cmd->pool);
+	dma_pool_destroy(cmd->pool);
 
 	return err;
 }
@@ -1863,6 +1864,6 @@ void mlx5_cmd_cleanup(struct mlx5_core_dev *dev)
 	destroy_workqueue(cmd->wq);
 	destroy_msg_cache(dev);
 	free_cmd_page(dev, cmd);
-	pci_pool_destroy(cmd->pool);
+	dma_pool_destroy(cmd->pool);
 }
 EXPORT_SYMBOL(mlx5_cmd_cleanup);

include/linux/mlx5/driver.h

@@ -299,7 +299,7 @@ struct mlx5_cmd {
 	struct semaphore pages_sem;
 	int	mode;
 	struct mlx5_cmd_work_ent *ent_arr[MLX5_MAX_COMMANDS];
-	struct pci_pool *pool;
+	struct dma_pool *pool;
 	struct mlx5_cmd_debug dbg;
 	struct cmd_msg_cache cache[MLX5_NUM_COMMAND_CACHES];
 	int checksum_disabled;