pata: imx: set controller PIO mode with .set_piomode callback

Convert .set_mode callback function to more specific .set_piomode,
the driver does not have support of DMA modes, thus a simpler version
of the callback is preferred.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/drivers/ata/pata_imx.c b/drivers/ata/pata_imx.c
index 203e3092ed07142dc76887c0aec524970d3c8831..00df18b07fa68cb297f399fa3648f07e5b0492b2 100644 (file)
--- a/drivers/ata/pata_imx.c
+++ b/drivers/ata/pata_imx.c
@@ -38,28 +38,17 @@ struct pata_imx_priv {
        u32 ata_ctl;
 };
 
-static int pata_imx_set_mode(struct ata_link *link, struct ata_device **unused)
+static void pata_imx_set_piomode(struct ata_port *ap, struct ata_device *adev)
 {
-       struct ata_device *dev;
-       struct ata_port *ap = link->ap;
        struct pata_imx_priv *priv = ap->host->private_data;
        u32 val;
 
-       ata_for_each_dev(dev, link, ENABLED) {
-               dev->pio_mode = dev->xfer_mode = XFER_PIO_0;
-               dev->xfer_shift = ATA_SHIFT_PIO;
-               dev->flags |= ATA_DFLAG_PIO;
-
-               val = __raw_readl(priv->host_regs + PATA_IMX_ATA_CONTROL);
-               if (ata_pio_need_iordy(dev))
-                       val |= PATA_IMX_ATA_CTRL_IORDY_EN;
-               else
-                       val &= ~PATA_IMX_ATA_CTRL_IORDY_EN;
-               __raw_writel(val, priv->host_regs + PATA_IMX_ATA_CONTROL);
-
-               ata_dev_info(dev, "configured for PIO\n");
-       }
-       return 0;
+       val = __raw_readl(priv->host_regs + PATA_IMX_ATA_CONTROL);
+       if (ata_pio_need_iordy(adev))
+               val |= PATA_IMX_ATA_CTRL_IORDY_EN;
+       else
+               val &= ~PATA_IMX_ATA_CTRL_IORDY_EN;
+       __raw_writel(val, priv->host_regs + PATA_IMX_ATA_CONTROL);
 }
 
 static struct scsi_host_template pata_imx_sht = {
@@ -70,7 +59,7 @@ static struct ata_port_operations pata_imx_port_ops = {
        .inherits               = &ata_sff_port_ops,
        .sff_data_xfer          = ata_sff_data_xfer_noirq,
        .cable_detect           = ata_cable_unknown,
-       .set_mode               = pata_imx_set_mode,
+       .set_piomode            = pata_imx_set_piomode,
 };
 
 static void pata_imx_setup_port(struct ata_ioports *ioaddr)