1 files changed, 43 insertions, 16 deletions

diff --git a/drivers/ide/ide-park.c b/drivers/ide/ide-park.c
index 678454ac248..f41558a0bcd 100644
--- a/drivers/ide/ide-park.c
+++ b/drivers/ide/ide-park.c
@@ -1,4 +1,5 @@
 #include <linux/kernel.h>
+#include <linux/gfp.h>
 #include <linux/ide.h>
 #include <linux/jiffies.h>
 #include <linux/blkdev.h>
@@ -7,31 +8,28 @@ DECLARE_WAIT_QUEUE_HEAD(ide_park_wq);
 
 static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
 {
-	ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
+	ide_hwif_t *hwif = drive->hwif;
 	struct request_queue *q = drive->queue;
 	struct request *rq;
 	int rc;
 
 	timeout += jiffies;
-	spin_lock_irq(&hwgroup->lock);
+	spin_lock_irq(&hwif->lock);
 	if (drive->dev_flags & IDE_DFLAG_PARKED) {
 		int reset_timer = time_before(timeout, drive->sleep);
 		int start_queue = 0;
 
 		drive->sleep = timeout;
 		wake_up_all(&ide_park_wq);
-		if (reset_timer && del_timer(&hwgroup->timer))
+		if (reset_timer && del_timer(&hwif->timer))
 			start_queue = 1;
-		spin_unlock_irq(&hwgroup->lock);
+		spin_unlock_irq(&hwif->lock);
 
-		if (start_queue) {
-			spin_lock_irq(q->queue_lock);
-			blk_start_queueing(q);
-			spin_unlock_irq(q->queue_lock);
-		}
+		if (start_queue)
+			blk_run_queue(q);
 		return;
 	}
-	spin_unlock_irq(&hwgroup->lock);
+	spin_unlock_irq(&hwif->lock);
 
 	rq = blk_get_request(q, READ, __GFP_WAIT);
 	rq->cmd[0] = REQ_PARK_HEADS;
@@ -54,31 +52,58 @@ static void issue_park_cmd(ide_drive_t *drive, unsigned long timeout)
 	rq->cmd[0] = REQ_UNPARK_HEADS;
 	rq->cmd_len = 1;
 	rq->cmd_type = REQ_TYPE_SPECIAL;
-	elv_add_request(q, rq, ELEVATOR_INSERT_FRONT, 1);
+	elv_add_request(q, rq, ELEVATOR_INSERT_FRONT);
 
 out:
 	return;
 }
 
+ide_startstop_t ide_do_park_unpark(ide_drive_t *drive, struct request *rq)
+{
+	struct ide_cmd cmd;
+	struct ide_taskfile *tf = &cmd.tf;
+
+	memset(&cmd, 0, sizeof(cmd));
+	if (rq->cmd[0] == REQ_PARK_HEADS) {
+		drive->sleep = *(unsigned long *)rq->special;
+		drive->dev_flags |= IDE_DFLAG_SLEEPING;
+		tf->command = ATA_CMD_IDLEIMMEDIATE;
+		tf->feature = 0x44;
+		tf->lbal = 0x4c;
+		tf->lbam = 0x4e;
+		tf->lbah = 0x55;
+		cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
+		cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;
+	} else		/* cmd == REQ_UNPARK_HEADS */
+		tf->command = ATA_CMD_CHK_POWER;
+
+	cmd.tf_flags |= IDE_TFLAG_CUSTOM_HANDLER;
+	cmd.protocol = ATA_PROT_NODATA;
+
+	cmd.rq = rq;
+
+	return do_rw_taskfile(drive, &cmd);
+}
+
 ssize_t ide_park_show(struct device *dev, struct device_attribute *attr,
 		      char *buf)
 {
 	ide_drive_t *drive = to_ide_device(dev);
-	ide_hwgroup_t *hwgroup = drive->hwif->hwgroup;
+	ide_hwif_t *hwif = drive->hwif;
 	unsigned long now;
 	unsigned int msecs;
 
 	if (drive->dev_flags & IDE_DFLAG_NO_UNLOAD)
 		return -EOPNOTSUPP;
 
-	spin_lock_irq(&hwgroup->lock);
+	spin_lock_irq(&hwif->lock);
 	now = jiffies;
 	if (drive->dev_flags & IDE_DFLAG_PARKED &&
 	    time_after(drive->sleep, now))
 		msecs = jiffies_to_msecs(drive->sleep - now);
 	else
 		msecs = 0;
-	spin_unlock_irq(&hwgroup->lock);
+	spin_unlock_irq(&hwif->lock);
 
 	return snprintf(buf, 20, "%u\n", msecs);
 }
@@ -91,8 +116,10 @@ ssize_t ide_park_store(struct device *dev, struct device_attribute *attr,
 	long int input;
 	int rc;
 
-	rc = strict_strtol(buf, 10, &input);
-	if (rc || input < -2)
+	rc = kstrtol(buf, 10, &input);
+	if (rc)
+		return rc;
+	if (input < -2)
 		return -EINVAL;
 	if (input > MAX_PARK_TIMEOUT) {
 		input = MAX_PARK_TIMEOUT;