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| author | Borislav Petkov <petkovbb@googlemail.com> | 2008-07-16 20:33:46 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2008-07-16 20:33:46 +0200 |
| commit | e529c6087a845e64a6a36a2d17b8754b20bc7c0d (patch) | |
| tree | 2ded1375fdda50c1fa95cc04ed20c9ed93fcbf59 /drivers/ide/ide-cd.c | |
| parent | 4b01fcbbe69bba34a8494fca6376ac0804f0f51d (diff) | |
| download | kernel_samsung_aries-e529c6087a845e64a6a36a2d17b8754b20bc7c0d.zip kernel_samsung_aries-e529c6087a845e64a6a36a2d17b8754b20bc7c0d.tar.gz kernel_samsung_aries-e529c6087a845e64a6a36a2d17b8754b20bc7c0d.tar.bz2 | |
ide-cd: move request prep from cdrom_start_seek_continuation to rq issue path
... by factoring out the rq preparation code into a separate
function called in the request routine. As a nice side effect,
this minimizes the IRQ handler execution time.
There should be no functionality change resulting from this patch.
[bart: s/HWGROUP()/drive->hwif->hwgroup/ and remove extra newlines]
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-cd.c')
| -rw-r--r-- | drivers/ide/ide-cd.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 66d82c1..275d5ba 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -738,9 +738,8 @@ static ide_startstop_t cdrom_seek_intr(ide_drive_t *drive) return ide_stopped; } -static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) +static void ide_cd_prepare_seek_request(ide_drive_t *drive, struct request *rq) { - struct request *rq = HWGROUP(drive)->rq; sector_t frame = rq->sector; sector_div(frame, queue_hardsect_size(drive->queue) >> SECTOR_BITS); @@ -750,6 +749,12 @@ static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) put_unaligned(cpu_to_be32(frame), (unsigned int *) &rq->cmd[2]); rq->timeout = ATAPI_WAIT_PC; +} + +static ide_startstop_t cdrom_start_seek_continuation(ide_drive_t *drive) +{ + struct request *rq = drive->hwif->hwgroup->rq; + return cdrom_transfer_packet_command(drive, rq, &cdrom_seek_intr); } @@ -1211,8 +1216,11 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, drive->dsc_overlap) { xferlen = 0; fn = cdrom_start_seek_continuation; + info->dma = 0; info->start_seek = jiffies; + + ide_cd_prepare_seek_request(drive, rq); } else { xferlen = 32768; fn = cdrom_start_rw_cont; |