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ide: add ide_execute_pkt_cmd() helper

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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>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2008-04-28 23:44:39 +02:00
parent 3910dde641
commit 1fc142589e
6 changed files with 17 additions and 18 deletions
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9
drivers/ide/ide-cd.c
View File

@ -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);
}

4
drivers/ide/ide-floppy.c
View File

@ -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);
}
}

12
drivers/ide/ide-iops.c
View File

@ -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);

4
drivers/ide/ide-tape.c
View File

@ -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);
}
}

4
drivers/scsi/ide-scsi.c
View File

@ -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);
}
}

2
include/linux/ide.h
View File

@ -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);