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ide-cd: move request prep from cdrom_start_seek_continuation to rq issue path

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... 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>
This commit is contained in:
Borislav Petkov 2008-07-16 20:33:46 +02:00 committed by Bartlomiej Zolnierkiewicz
parent 4b01fcbbe6
commit e529c6087a
1 changed files with 10 additions and 2 deletions
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12
drivers/ide/ide-cd.c
View file

@ -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;