[PATCH 3/3] ide: add ide_execute_pkt_cmd() helper

[Bartlomiej Zolnierkiewicz]

Add ide_execute_pkt_cmd() helper for executing PACKET command,
then convert ATAPI device drivers to use it.

As a nice side-effect this fixes ide-{floppy,tape,scsi} w.r.t.
ide_lock taking (ide-cd was OK).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
 drivers/ide/ide-cd.c     |    9 +--------
 drivers/ide/ide-floppy.c |    4 +---
 drivers/ide/ide-iops.c   |   12 +++++++++++-
 drivers/ide/ide-tape.c   |    4 +---
 drivers/scsi/ide-scsi.c  |    4 +---
 include/linux/ide.h      |    2 ++
 6 files changed, 17 insertions(+), 18 deletions(-)

Index: b/drivers/ide/ide-cd.c
===================================================================
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -555,14 +555,7 @@ static ide_startstop_t cdrom_start_packe
 				    ATAPI_WAIT_PC, cdrom_timer_expiry);
 		return ide_started;
 	} else {
-		unsigned long flags;
-
-		/* packet command */
-		spin_lock_irqsave(&ide_lock, flags);
-		hwif->OUTBSYNC(drive, WIN_PACKETCMD,
-			       hwif->io_ports.command_addr);
-		ndelay(400);
-		spin_unlock_irqrestore(&ide_lock, flags);
+		ide_execute_pkt_cmd(drive);
 
 		return (*handler) (drive);
 	}
Index: b/drivers/ide/ide-floppy.c
===================================================================
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -696,9 +696,7 @@ static ide_startstop_t idefloppy_issue_p
 		return ide_started;
 	} else {
 		/* Issue the packet command */
-		hwif->OUTBSYNC(drive, WIN_PACKETCMD,
-			       hwif->io_ports.command_addr);
-		ndelay(400);
+		ide_execute_pkt_cmd(drive);
 		return (*pkt_xfer_routine) (drive);
 	}
 }
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -801,9 +801,19 @@ void ide_execute_command(ide_drive_t *dr
 	ndelay(400);
 	spin_unlock_irqrestore(&ide_lock, flags);
 }
-
 EXPORT_SYMBOL(ide_execute_command);
 
+void ide_execute_pkt_cmd(ide_drive_t *drive)
+{
+	ide_hwif_t *hwif = drive->hwif;
+	unsigned long flags;
+
+	spin_lock_irqsave(&ide_lock, flags);
+	hwif->OUTBSYNC(drive, WIN_PACKETCMD, hwif->io_ports.command_addr);
+	ndelay(400);
+	spin_unlock_irqrestore(&ide_lock, flags);
+}
+EXPORT_SYMBOL_GPL(ide_execute_pkt_cmd);
 
 /* needed below */
 static ide_startstop_t do_reset1 (ide_drive_t *, int);
Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1056,9 +1056,7 @@ static ide_startstop_t idetape_issue_pc(
 				    IDETAPE_WAIT_CMD, NULL);
 		return ide_started;
 	} else {
-		hwif->OUTBSYNC(drive, WIN_PACKETCMD,
-			       hwif->io_ports.command_addr);
-		ndelay(400);
+		ide_execute_pkt_cmd(drive);
 		return idetape_transfer_pc(drive);
 	}
 }
Index: b/drivers/scsi/ide-scsi.c
===================================================================
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -574,9 +574,7 @@ static ide_startstop_t idescsi_issue_pc(
 		return ide_started;
 	} else {
 		/* Issue the packet command */
-		hwif->OUTBSYNC(drive, WIN_PACKETCMD,
-			       hwif->io_ports.command_addr);
-		ndelay(400);
+		ide_execute_pkt_cmd(drive);
 		return idescsi_transfer_pc(drive);
 	}
 }
Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -811,6 +811,8 @@ extern void ide_set_handler (ide_drive_t
 void ide_execute_command(ide_drive_t *, u8, ide_handler_t *, unsigned int,
 			 ide_expiry_t *);
 
+void ide_execute_pkt_cmd(ide_drive_t *);
+
 ide_startstop_t __ide_error(ide_drive_t *, struct request *, u8, u8);
 
 ide_startstop_t ide_error (ide_drive_t *drive, const char *msg, byte stat);
--
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