Merge git://git.kernel.org/pub/scm/linux/kernel/git/brodo/pcmcia-fixes-2.6

[powerpc.git] / drivers / ide / ide-io.c

diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index f174aee..5275cbb 100644 (file)
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -560,7 +560,7 @@ ide_startstop_t __ide_abort(ide_drive_t *drive, struct request *rq)
 EXPORT_SYMBOL_GPL(__ide_abort);
 
 /**
- *     ide_abort       -       abort pending IDE operatins
+ *     ide_abort       -       abort pending IDE operations
  *     @drive: drive the error occurred on
  *     @msg: message to report
  *
@@ -623,7 +623,7 @@ static void ide_cmd (ide_drive_t *drive, u8 cmd, u8 nsect,
  *     @drive: drive the completion interrupt occurred on
  *
  *     drive_cmd_intr() is invoked on completion of a special DRIVE_CMD.
- *     We do any necessary daya reading and then wait for the drive to
+ *     We do any necessary data reading and then wait for the drive to
  *     go non busy. At that point we may read the error data and complete
  *     the request
  */
@@ -773,7 +773,7 @@ EXPORT_SYMBOL_GPL(ide_init_sg_cmd);
 
 /**
  *     execute_drive_command   -       issue special drive command
- *     @drive: the drive to issue th command on
+ *     @drive: the drive to issue the command on
  *     @rq: the request structure holding the command
  *
  *     execute_drive_cmd() issues a special drive command,  usually 
@@ -1101,6 +1101,7 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
        ide_hwif_t      *hwif;
        struct request  *rq;
        ide_startstop_t startstop;
+       int             loops = 0;
 
        /* for atari only: POSSIBLY BROKEN HERE(?) */
        ide_get_lock(ide_intr, hwgroup);
@@ -1153,6 +1154,7 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
                        /* no more work for this hwgroup (for now) */
                        return;
                }
+       again:
                hwif = HWIF(drive);
                if (hwgroup->hwif->sharing_irq &&
                    hwif != hwgroup->hwif &&
@@ -1192,8 +1194,14 @@ static void ide_do_request (ide_hwgroup_t *hwgroup, int masked_irq)
                 * though. I hope that doesn't happen too much, hopefully not
                 * unless the subdriver triggers such a thing in its own PM
                 * state machine.
+                *
+                * We count how many times we loop here to make sure we service
+                * all drives in the hwgroup without looping for ever
                 */
                if (drive->blocked && !blk_pm_request(rq) && !(rq->flags & REQ_PREEMPT)) {
+                       drive = drive->next ? drive->next : hwgroup->drive;
+                       if (loops++ < 4 && !blk_queue_plugged(drive->queue))
+                               goto again;
                        /* We clear busy, there should be no pending ATA command at this point. */
                        hwgroup->busy = 0;
                        break;