[RFC v3 01/13] libahci: Allow drivers to override start_engine

Hello, Hans.

On Sun, Jan 19, 2014 at 12:48:43AM +0100, Hans de Goede wrote:

 void ahci_start_engine(struct ata_port *ap)
 {
 	void __iomem *port_mmio = ahci_port_base(ap);
+	struct ahci_host_priv *hpriv = ap->host->private_data;
 	u32 tmp;
 
+	if (hpriv->start_engine) {
+		hpriv->start_engine(ap);
+		return;
+	}
+

I'd much prefer if the driver always calls hpriv->start_engine() which
is initialized to the default callback during common init and then
overridden if necessary.

Thanks.

-- 
tejun