libata-link: linkify reset

Make reset methods and related functions deal with ata_link instead of
ata_port.

* ata_do_reset()
* ata_eh_reset()
* all prereset/reset/postreset methods and related functions

This patch introduces no behavior change.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 19 insertions, 15 deletions

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 6e5f69a3a0c2..e38ae12d0148 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1042,9 +1042,10 @@ static int ahci_exec_polled_cmd(struct ata_port *ap, int pmp,
         return 0;
 }
 
-static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
+static int ahci_do_softreset(struct ata_link *link, unsigned int *class,
                              int pmp, unsigned long deadline)
 {
+        struct ata_port *ap = link->ap;
         const char *reason = NULL;
         unsigned long now, msecs;
         struct ata_taskfile tf;
@@ -1052,7 +1053,7 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
 
         DPRINTK("ENTER\n");
 
-        if (ata_link_offline(&ap->link)) {
+        if (ata_link_offline(link)) {
                 DPRINTK("PHY reports no device\n");
                 *class = ATA_DEV_NONE;
                 return 0;
@@ -1061,10 +1062,10 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
         /* prepare for SRST (AHCI-1.1 10.4.1) */
         rc = ahci_kick_engine(ap, 1);
         if (rc)
-                ata_port_printk(ap, KERN_WARNING,
+                ata_link_printk(link, KERN_WARNING,
                                 "failed to reset engine (errno=%d)", rc);
 
-        ata_tf_init(ap->link.device, &tf);
+        ata_tf_init(link->device, &tf);
 
         /* issue the first D2H Register FIS */
         msecs = 0;
@@ -1109,19 +1110,20 @@ static int ahci_do_softreset(struct ata_port *ap, unsigned int *class,
         return 0;
 
  fail:
-        ata_port_printk(ap, KERN_ERR, "softreset failed (%s)\n", reason);
+        ata_link_printk(link, KERN_ERR, "softreset failed (%s)\n", reason);
         return rc;
 }
 
-static int ahci_softreset(struct ata_port *ap, unsigned int *class,
+static int ahci_softreset(struct ata_link *link, unsigned int *class,
                           unsigned long deadline)
 {
-        return ahci_do_softreset(ap, class, 0, deadline);
+        return ahci_do_softreset(link, class, 0, deadline);
 }
 
-static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
+static int ahci_hardreset(struct ata_link *link, unsigned int *class,
                           unsigned long deadline)
 {
+        struct ata_port *ap = link->ap;
         struct ahci_port_priv *pp = ap->private_data;
         u8 *d2h_fis = pp->rx_fis + RX_FIS_D2H_REG;
         struct ata_taskfile tf;
@@ -1132,15 +1134,15 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
         ahci_stop_engine(ap);
 
         /* clear D2H reception area to properly wait for D2H FIS */
-        ata_tf_init(ap->link.device, &tf);
+        ata_tf_init(link->device, &tf);
         tf.command = 0x80;
         ata_tf_to_fis(&tf, 0, 0, d2h_fis);
 
-        rc = sata_std_hardreset(ap, class, deadline);
+        rc = sata_std_hardreset(link, class, deadline);
 
         ahci_start_engine(ap);
 
-        if (rc == 0 && ata_link_online(&ap->link))
+        if (rc == 0 && ata_link_online(link))
                 *class = ahci_dev_classify(ap);
         if (*class == ATA_DEV_UNKNOWN)
                 *class = ATA_DEV_NONE;
@@ -1149,9 +1151,10 @@ static int ahci_hardreset(struct ata_port *ap, unsigned int *class,
         return rc;
 }
 
-static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
+static int ahci_vt8251_hardreset(struct ata_link *link, unsigned int *class,
                                  unsigned long deadline)
 {
+        struct ata_port *ap = link->ap;
         u32 serror;
         int rc;
 
@@ -1159,7 +1162,7 @@ static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
 
         ahci_stop_engine(ap);
 
-        rc = sata_port_hardreset(ap, sata_ehc_deb_timing(&ap->link.eh_context),
+        rc = sata_link_hardreset(link, sata_ehc_deb_timing(&link->eh_context),
                                  deadline);
 
         /* vt8251 needs SError cleared for the port to operate */
@@ -1176,12 +1179,13 @@ static int ahci_vt8251_hardreset(struct ata_port *ap, unsigned int *class,
         return rc ?: -EAGAIN;
 }
 
-static void ahci_postreset(struct ata_port *ap, unsigned int *class)
+static void ahci_postreset(struct ata_link *link, unsigned int *class)
 {
+        struct ata_port *ap = link->ap;
         void __iomem *port_mmio = ahci_port_base(ap);
         u32 new_tmp, tmp;
 
-        ata_std_postreset(ap, class);
+        ata_std_postreset(link, class);
 
         /* Make sure port's ATAPI bit is set appropriately */
         new_tmp = tmp = readl(port_mmio + PORT_CMD);