From: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
Subject: [PATCH] ide-cd: unify ide_cd_do_request() exit paths
* Move cdrom_end_request() calls from cdrom_start_rw()
and ide_cd_prepare_rw_request() to ide_cd_do_request().
* Unify ide_cd_do_request() exit paths.
There should be no functional changes caused by this patch.
Cc: Borislav Petkov <petkovbb@xxxxxxxxx>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@xxxxxxxxx>
---
drivers/ide/ide-cd.c | 28 ++++++++++++----------------
1 file changed, 12 insertions(+), 16 deletions(-)
Index: b/drivers/ide/ide-cd.c
===================================================================
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -590,7 +590,6 @@ static ide_startstop_t ide_cd_prepare_rw
printk(KERN_ERR PFX "%s: %s: buffer botch (%u)\n",
drive->name, __func__,
rq->current_nr_sectors);
- cdrom_end_request(drive, 0);
return ide_stopped;
}
rq->current_nr_sectors += nskip;
@@ -967,10 +966,8 @@ static ide_startstop_t cdrom_start_rw(id
if (write) {
/* disk has become write protected */
- if (get_disk_ro(cd->disk)) {
- cdrom_end_request(drive, 0);
+ if (get_disk_ro(cd->disk))
return ide_stopped;
- }
} else {
/*
* We may be retrying this request after an error. Fix up any
@@ -982,10 +979,8 @@ static ide_startstop_t cdrom_start_rw(id
/* use DMA, if possible / writes *must* be hardware frame aligned */
if ((rq->nr_sectors & (sectors_per_frame - 1)) ||
(rq->sector & (sectors_per_frame - 1))) {
- if (write) {
- cdrom_end_request(drive, 0);
+ if (write)
return ide_stopped;
- }
drive->dma = 0;
} else
drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
@@ -1040,6 +1035,7 @@ static ide_startstop_t ide_cd_do_request
sector_t block)
{
struct ide_cmd cmd;
+ int uptodate = 0;
ide_debug_log(IDE_DBG_RQ, "cmd: 0x%x, block: %llu",
rq->cmd[0], (unsigned long long)block);
@@ -1048,11 +1044,9 @@ static ide_startstop_t ide_cd_do_request
blk_dump_rq_flags(rq, "ide_cd_do_request");
if (blk_fs_request(rq)) {
- if (cdrom_start_rw(drive, rq) == ide_stopped)
- return ide_stopped;
-
- if (ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
- return ide_stopped;
+ if (cdrom_start_rw(drive, rq) == ide_stopped ||
+ ide_cd_prepare_rw_request(drive, rq) == ide_stopped)
+ goto out_end;
} else if (blk_sense_request(rq) || blk_pc_request(rq) ||
rq->cmd_type == REQ_TYPE_ATA_PC) {
if (!rq->timeout)
@@ -1061,12 +1055,11 @@ static ide_startstop_t ide_cd_do_request
cdrom_do_block_pc(drive, rq);
} else if (blk_special_request(rq)) {
/* right now this can only be a reset... */
- cdrom_end_request(drive, 1);
- return ide_stopped;
+ uptodate = 1;
+ goto out_end;
} else {
blk_dump_rq_flags(rq, DRV_NAME " bad flags");
- cdrom_end_request(drive, 0);
- return ide_stopped;
+ goto out_end;
}
memset(&cmd, 0, sizeof(cmd));
@@ -1077,6 +1070,9 @@ static ide_startstop_t ide_cd_do_request
cmd.rq = rq;
return ide_issue_pc(drive, &cmd);
+out_end:
+ cdrom_end_request(drive, uptodate);
+ return ide_stopped;
}
/*
--
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