pata-rb532-cf: use ata_sff_data_xfer32()

The biggest difference between rb532_pata_data_xfer() and
ata_sff_data_xfer32() is the call to ata_sff_pause() at the end of
rb532_pata_data_xfer() which I suppose to be unnecessary since it works
without. I've also tested using ata_sff_data_xfer() as replacement, but
since we know that the driver supports 32bit IO, using the optimised
version should be safe.

Signed-off-by: Phil Sutter <n0-1@freewrt.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

1 files changed, 1 insertions, 20 deletions

diff --git a/drivers/ata/pata_rb532_cf.c b/drivers/ata/pata_rb532_cf.c
index 9d61ce51e4e0..9fb91e4dd887 100644
--- a/drivers/ata/pata_rb532_cf.c
+++ b/drivers/ata/pata_rb532_cf.c
@@ -54,25 +54,6 @@ struct rb532_cf_info {
 
 /* ------------------------------------------------------------------------ */
 
-static unsigned int rb532_pata_data_xfer(struct ata_device *adev, unsigned char *buf,
-                                unsigned int buflen, int write_data)
-{
-        struct ata_port *ap = adev->link->ap;
-        void __iomem *ioaddr = ap->ioaddr.data_addr;
-        int retlen = buflen;
-
-        if (write_data) {
-                for (; buflen > 0; buflen--, buf++)
-                        writeb(*buf, ioaddr);
-        } else {
-                for (; buflen > 0; buflen--, buf++)
-                        *buf = readb(ioaddr);
-        }
-
-        ata_sff_pause(ap);
-        return retlen;
-}
-
 static void rb532_pata_freeze(struct ata_port *ap)
 {
         struct rb532_cf_info *info = ap->host->private_data;
@@ -105,7 +86,7 @@ static irqreturn_t rb532_pata_irq_handler(int irq, void *dev_instance)
 
 static struct ata_port_operations rb532_pata_port_ops = {
         .inherits               = &ata_sff_port_ops,
-        .sff_data_xfer          = rb532_pata_data_xfer,
+        .sff_data_xfer          = ata_sff_data_xfer32,
         .freeze                 = rb532_pata_freeze,
         .thaw                   = rb532_pata_thaw,
 };