[PATCH] libata: implement ata_std_probeinit()

This patch implements the off-the-shelf probeinit component operation.
Currently, all it does is waking up the PHY if it's a SATA port.

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

1 files changed, 15 insertions, 1 deletions

diff --git a/drivers/scsi/libata-core.c b/drivers/scsi/libata-core.c
index c36c5a9a4617..14cdbb336dd5 100644
--- a/drivers/scsi/libata-core.c
+++ b/drivers/scsi/libata-core.c
@@ -2296,6 +2296,19 @@ static int sata_phy_resume(struct ata_port *ap)
 }
 
 /**
+ *      ata_std_probeinit - initialize probing
+ *      @ap: port to be probed
+ *
+ *      @ap is about to be probed.  Initialize it.  This function is
+ *      to be used as standard callback for ata_drive_probe_reset().
+ */
+extern void ata_std_probeinit(struct ata_port *ap)
+{
+        if (ap->flags & ATA_FLAG_SATA && ap->ops->scr_read)
+                sata_phy_resume(ap);
+}
+
+/**
  *      ata_std_softreset - reset host port via ATA SRST
  *      @ap: port to reset
  *      @verbose: fail verbosely
@@ -2485,7 +2498,7 @@ int ata_std_probe_reset(struct ata_port *ap, unsigned int *classes)
         if (ap->flags & ATA_FLAG_SATA && ap->ops->scr_read)
                 hardreset = sata_std_hardreset;
 
-        return ata_drive_probe_reset(ap, NULL,
+        return ata_drive_probe_reset(ap, ata_std_probeinit,
                                      ata_std_softreset, hardreset,
                                      ata_std_postreset, classes);
 }
@@ -5535,6 +5548,7 @@ EXPORT_SYMBOL_GPL(ata_port_probe);
 EXPORT_SYMBOL_GPL(sata_phy_reset);
 EXPORT_SYMBOL_GPL(__sata_phy_reset);
 EXPORT_SYMBOL_GPL(ata_bus_reset);
+EXPORT_SYMBOL_GPL(ata_std_probeinit);
 EXPORT_SYMBOL_GPL(ata_std_softreset);
 EXPORT_SYMBOL_GPL(sata_std_hardreset);
 EXPORT_SYMBOL_GPL(ata_std_postreset);