ide: add ide_execute_pkt_cmd() helper

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@gmail.com>

diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 095e50a..0881ddc 100644 (file)
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -555,14 +555,7 @@ static ide_startstop_t cdrom_start_packet_command(ide_drive_t *drive,
                                    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);
        }

diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index da79248..0039789 100644 (file)
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -696,9 +696,7 @@ static ide_startstop_t idefloppy_issue_pc(ide_drive_t *drive,
                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);
        }
 }

diff --git a/drivers/ide/ide-iops.c b/drivers/ide/ide-iops.c
index 7f2b4ed..dfe47d5 100644 (file)
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -801,9 +801,19 @@ void ide_execute_command(ide_drive_t *drive, u8 cmd, ide_handler_t *handler,
        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);

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index dc88431..71d07d7 100644 (file)
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -1056,9 +1056,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
                                    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);
        }
 }

diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 8b1c783..7964cc1 100644 (file)
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -574,9 +574,7 @@ static ide_startstop_t idescsi_issue_pc(ide_drive_t *drive,
                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);
        }
 }

diff --git a/include/linux/ide.h b/include/linux/ide.h
index 5ab9773..3927996 100644 (file)
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -822,6 +822,8 @@ extern void ide_set_handler (ide_drive_t *drive, ide_handler_t *handler, unsigne
 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);