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ide-cd: unify cdrom_newpc_intr() exit paths 

* Move cdrom_end_request() calls from cdrom_decode_status()
  and ide_cd_check_ireason() to cdrom_newpc_intr().

* Unify cdrom_newpc_intr() exit paths.

There should be no functional changes caused by this patch.

Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-03-31 20:15:03 +02:00
parent 984c5e5974
commit 8a11697485
1 changed files with 23 additions and 25 deletions
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48
drivers/ide/ide-cd.c
View File

@ -296,7 +296,8 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
/*
* Returns:
* 0: if the request should be continued.
* 1: if the request was ended.
* 1: if the request will be going through error recovery.
* 2: if the request should be ended.
*/
static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
{
@ -329,10 +330,7 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
* Just give up.
*/
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
ide_error(drive, "request sense failure", stat);
return 1;
return 2;
} else if (blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) {
/* All other functions, except for READ. */
@ -472,14 +470,12 @@ static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
*/
if (stat & ATA_ERR)
cdrom_queue_request_sense(drive, NULL, NULL);
return 1;
} else {
blk_dump_rq_flags(rq, PFX "bad rq");
cdrom_end_request(drive, 0);
return 2;
}
/* retry, or handle the next request */
return 1;
end_request:
if (stat & ATA_ERR) {
struct request_queue *q = drive->queue;
@ -492,10 +488,9 @@ end_request:
hwif->rq = NULL;
cdrom_queue_request_sense(drive, rq->sense, rq);
return 1;
} else
cdrom_end_request(drive, 0);
return 1;
return 2;
}
/*
@ -539,7 +534,6 @@ static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
if (rq->cmd_type == REQ_TYPE_ATA_PC)
rq->cmd_flags |= REQ_FAILED;
cdrom_end_request(drive, 0);
return -1;
}
@ -741,7 +735,8 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
xfer_func_t *xferfunc;
ide_expiry_t *expiry = NULL;
int dma_error = 0, dma, stat, thislen, uptodate = 0;
int write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
int write = (rq_data_dir(rq) == WRITE) ? 1 : 0, rc;
int sense = blk_sense_request(rq);
unsigned int timeout;
u16 len;
u8 ireason;
@ -761,8 +756,12 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
}
}
if (cdrom_decode_status(drive, 0, &stat))
rc = cdrom_decode_status(drive, 0, &stat);
if (rc) {
if (rc == 2)
goto out_end;
return ide_stopped;
}
/* using dma, transfer is complete now */
if (dma) {
@ -807,8 +806,6 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
rq->cmd_flags |= REQ_FAILED;
uptodate = 0;
}
cdrom_end_request(drive, uptodate);
return ide_stopped;
} else if (!blk_pc_request(rq)) {
ide_cd_request_sense_fixup(drive, rq);
/* complain if we still have data left to transfer */
@ -820,17 +817,16 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
}
/* check which way to transfer data */
if (ide_cd_check_ireason(drive, rq, len, ireason, write))
return ide_stopped;
rc = ide_cd_check_ireason(drive, rq, len, ireason, write);
if (rc)
goto out_end;
if (blk_fs_request(rq)) {
if (write == 0) {
int nskip;
if (ide_cd_check_transfer_size(drive, len)) {
cdrom_end_request(drive, 0);
return ide_stopped;
}
if (ide_cd_check_transfer_size(drive, len))
goto out_end;
/*
* First, figure out if we need to bit-bucket
@ -923,7 +919,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
else
rq->data += blen;
}
if (!write && blk_sense_request(rq))
if (sense && write == 0)
rq->sense_len += blen;
}
@ -944,7 +940,7 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
return ide_started;
out_end:
if (blk_pc_request(rq)) {
if (blk_pc_request(rq) && rc == 0) {
unsigned int dlen = rq->data_len;
if (dma)
@ -956,6 +952,8 @@ out_end:
hwif->rq = NULL;
} else {
cdrom_end_request(drive, uptodate);
if (sense && rc == 2)
ide_error(drive, "request sense failure", stat);
}
return ide_stopped;
}