libata-link: separate out ata_eh_handle_dev_fail()

Separate out ata_eh_handle_dev_fail() from ata_eh_recover().  This is
in preparation of ata_link and PMP support.

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

diff --git a/drivers/ata/libata-eh.c b/drivers/ata/libata-eh.c
index 9ee0a8c..9aa62a0 100644 (file)
--- a/drivers/ata/libata-eh.c
+++ b/drivers/ata/libata-eh.c
@@ -1897,6 +1897,57 @@ static int ata_eh_skip_recovery(struct ata_port *ap)
        return 1;
 }
 
+static void ata_eh_handle_dev_fail(struct ata_device *dev, int err)
+{
+       struct ata_port *ap = dev->ap;
+       struct ata_eh_context *ehc = &ap->eh_context;
+
+       ehc->tries[dev->devno]--;
+
+       switch (err) {
+       case -ENODEV:
+               /* device missing or wrong IDENTIFY data, schedule probing */
+               ehc->i.probe_mask |= (1 << dev->devno);
+       case -EINVAL:
+               /* give it just one more chance */
+               ehc->tries[dev->devno] = min(ehc->tries[dev->devno], 1);
+       case -EIO:
+               if (ehc->tries[dev->devno] == 1) {
+                       /* This is the last chance, better to slow
+                        * down than lose it.
+                        */
+                       sata_down_spd_limit(ap);
+                       ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
+               }
+       }
+
+       if (ata_dev_enabled(dev) && !ehc->tries[dev->devno]) {
+               /* disable device if it has used up all its chances */
+               ata_dev_disable(dev);
+
+               /* detach if offline */
+               if (ata_port_offline(ap))
+                       ata_eh_detach_dev(dev);
+
+               /* probe if requested */
+               if ((ehc->i.probe_mask & (1 << dev->devno)) &&
+                   !(ehc->did_probe_mask & (1 << dev->devno))) {
+                       ata_eh_detach_dev(dev);
+                       ata_dev_init(dev);
+
+                       ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
+                       ehc->did_probe_mask |= (1 << dev->devno);
+                       ehc->i.action |= ATA_EH_SOFTRESET;
+               }
+       } else {
+               /* soft didn't work?  be haaaaard */
+               if (ehc->i.flags & ATA_EHI_DID_RESET)
+                       ehc->i.action |= ATA_EH_HARDRESET;
+               else
+                       ehc->i.action |= ATA_EH_SOFTRESET;
+       }
+}
+
 /**
  *     ata_eh_recover - recover host port after error
  *     @ap: host port to recover
@@ -1997,50 +2048,7 @@ static int ata_eh_recover(struct ata_port *ap, ata_prereset_fn_t prereset,
        goto out;
 
  dev_fail:
-       ehc->tries[dev->devno]--;
-
-       switch (rc) {
-       case -ENODEV:
-               /* device missing or wrong IDENTIFY data, schedule probing */
-               ehc->i.probe_mask |= (1 << dev->devno);
-       case -EINVAL:
-               /* give it just one more chance */
-               ehc->tries[dev->devno] = min(ehc->tries[dev->devno], 1);
-       case -EIO:
-               if (ehc->tries[dev->devno] == 1) {
-                       /* This is the last chance, better to slow
-                        * down than lose it.
-                        */
-                       sata_down_spd_limit(ap);
-                       ata_down_xfermask_limit(dev, ATA_DNXFER_PIO);
-               }
-       }
-
-       if (ata_dev_enabled(dev) && !ehc->tries[dev->devno]) {
-               /* disable device if it has used up all its chances */
-               ata_dev_disable(dev);
-
-               /* detach if offline */
-               if (ata_port_offline(ap))
-                       ata_eh_detach_dev(dev);
-
-               /* probe if requested */
-               if ((ehc->i.probe_mask & (1 << dev->devno)) &&
-                   !(ehc->did_probe_mask & (1 << dev->devno))) {
-                       ata_eh_detach_dev(dev);
-                       ata_dev_init(dev);
-
-                       ehc->tries[dev->devno] = ATA_EH_DEV_TRIES;
-                       ehc->did_probe_mask |= (1 << dev->devno);
-                       ehc->i.action |= ATA_EH_SOFTRESET;
-               }
-       } else {
-               /* soft didn't work?  be haaaaard */
-               if (ehc->i.flags & ATA_EHI_DID_RESET)
-                       ehc->i.action |= ATA_EH_HARDRESET;
-               else
-                       ehc->i.action |= ATA_EH_SOFTRESET;
-       }
+       ata_eh_handle_dev_fail(dev, rc);
 
        if (ata_port_nr_enabled(ap)) {
                ata_port_printk(ap, KERN_WARNING, "failed to recover some "