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ide: remove IDE PM hack from do_ide_request()

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We now tell block layer that there is still work to do using
blk_plug_device() so hack for IDE Power Management can be removed
(it was buggy for hwgroups having more than 4 devices anyway).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-01-02 16:12:49 +01:00
parent 295f00042a
commit 2fb211502e
1 changed files with 1 additions and 8 deletions
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9
drivers/ide/ide-io.c
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@ -786,7 +786,6 @@ void do_ide_request(struct request_queue *q)
ide_hwif_t *hwif;
struct request *rq;
ide_startstop_t startstop;
int loops = 0;
/* caller must own hwgroup->lock */
BUG_ON(!irqs_disabled());
@ -844,7 +843,7 @@ void do_ide_request(struct request_queue *q)
if (drive != orig_drive)
goto plug_device;
again:
hwif = drive->hwif;
if (hwif != hwgroup->hwif) {
@ -882,16 +881,10 @@ again:
* 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->dev_flags & IDE_DFLAG_BLOCKED) &&
blk_pm_request(rq) == 0 &&
(rq->cmd_flags & REQ_PREEMPT) == 0) {
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;
goto plug_device;