[PATCH] libata: separate out sata_phy_resume() from sata_std_hardreset()

This patch separates out sata_phy_resume() from sata_std_hardreset().
The function will later be used by probeinit callback.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

1 files changed, 21 insertions, 11 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index d4fb0f754c91..99f4bf6022ee 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2277,6 +2277,24 @@ err_out:
         DPRINTK("EXIT\n");
 }
 
+static int sata_phy_resume(struct ata_port *ap)
+{
+        unsigned long timeout = jiffies + (HZ * 5);
+        u32 sstatus;
+
+        scr_write_flush(ap, SCR_CONTROL, 0x300);
+
+        /* Wait for phy to become ready, if necessary. */
+        do {
+                msleep(200);
+                sstatus = scr_read(ap, SCR_STATUS);
+                if ((sstatus & 0xf) != 1)
+                        return 0;
+        } while (time_before(jiffies, timeout));
+
+        return -1;
+}
+
 /**
  *      ata_std_softreset - reset host port via ATA SRST
  *      @ap: port to reset
@@ -2357,8 +2375,7 @@ int ata_std_softreset(struct ata_port *ap, int verbose, unsigned int *classes)
  */
 int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
 {
-        u32 sstatus, serror;
-        unsigned long timeout = jiffies + (HZ * 5);
+        u32 serror;
 
         DPRINTK("ENTER\n");
 
@@ -2371,15 +2388,8 @@ int sata_std_hardreset(struct ata_port *ap, int verbose, unsigned int *class)
          */
         msleep(1);
 
-        scr_write_flush(ap, SCR_CONTROL, 0x300);
-
-        /* Wait for phy to become ready, if necessary. */
-        do {
-                msleep(200);
-                sstatus = scr_read(ap, SCR_STATUS);
-                if ((sstatus & 0xf) != 1)
-                        break;
-        } while (time_before(jiffies, timeout));
+        /* Bring phy back */
+        sata_phy_resume(ap);
 
         /* Clear SError */
         serror = scr_read(ap, SCR_ERROR);