libata-sff: ap->[last_]ctl are SFF specific

ap->[last_]ctl are specific to SFF controllers.  Put them inside
CONFIG_ATA_SFF and move initialization into ata_sff_port_init().

Signed-off-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

3 files changed, 8 insertions, 4 deletions

diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 200f49d09228..bf6ffc1273a0 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5634,10 +5634,8 @@ struct ata_port *ata_port_alloc(struct ata_host *host)
         ap->pflags |= ATA_PFLAG_INITIALIZING;
         ap->lock = &host->lock;
         ap->print_id = -1;
-        ap->ctl = ATA_DEVCTL_OBS;
         ap->host = host;
         ap->dev = host->dev;
-        ap->last_ctl = 0xFF;
 
 #if defined(ATA_VERBOSE_DEBUG)
         /* turn on all debugging levels */
diff --git a/drivers/ata/libata-sff.c b/drivers/ata/libata-sff.c
index 6a103b310cac..8a1396f52a3a 100644
--- a/drivers/ata/libata-sff.c
+++ b/drivers/ata/libata-sff.c
@@ -3074,6 +3074,8 @@ EXPORT_SYMBOL_GPL(ata_pci_bmdma_init);
  */
 void ata_sff_port_init(struct ata_port *ap)
 {
+        ap->ctl = ATA_DEVCTL_OBS;
+        ap->last_ctl = 0xFF;
 }
 
 int __init ata_sff_init(void)
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 19f716edd3be..85b99b83f990 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -721,10 +721,10 @@ struct ata_port {
 
 #ifdef CONFIG_ATA_SFF
         struct ata_ioports      ioaddr; /* ATA cmd/ctl/dma register blocks */
-#endif /* CONFIG_ATA_SFF */
-
         u8                      ctl;    /* cache of ATA control register */
         u8                      last_ctl;       /* Cache last written value */
+#endif /* CONFIG_ATA_SFF */
+
         unsigned int            pio_mask;
         unsigned int            mwdma_mask;
         unsigned int            udma_mask;
@@ -1435,7 +1435,11 @@ static inline void ata_tf_init(struct ata_device *dev, struct ata_taskfile *tf)
 {
         memset(tf, 0, sizeof(*tf));
 
+#ifdef CONFIG_ATA_SFF
         tf->ctl = dev->link->ap->ctl;
+#else
+        tf->ctl = ATA_DEVCTL_OBS;
+#endif
         if (dev->devno == 0)
                 tf->device = ATA_DEVICE_OBS;
         else