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| author | Borislav Petkov <petkovbb@googlemail.com> | 2009-01-02 16:12:52 +0100 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-01-02 16:12:52 +0100 |
| commit | 392de1d53dd40e2eebee3a0a26aa647a3865ca78 (patch) | |
| tree | 6e904d52596b73d0f1ab343a4e84b0d8de5958fe | |
| parent | 4f02ff06b4d33aba50ce5157c23e99cd21d447ee (diff) | |
| download | linux-392de1d53dd40e2eebee3a0a26aa647a3865ca78.tar.gz linux-392de1d53dd40e2eebee3a0a26aa647a3865ca78.tar.bz2 linux-392de1d53dd40e2eebee3a0a26aa647a3865ca78.zip | |
ide-atapi: accomodate transfer length calculation for ide-cd
... by factoring it out of ide_cd_do_request() into a helper, as suggested by
Bart.
There should be no functionality change resulting from this patch.
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
[bart: BLK_DEV_IDECD needs to select IDE_ATAPI now]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
| -rw-r--r-- | drivers/ide/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/ide/ide-atapi.c | 15 | ||||
| -rw-r--r-- | drivers/ide/ide-cd.c | 4 | ||||
| -rw-r--r-- | include/linux/ide.h | 2 |
4 files changed, 19 insertions, 3 deletions
diff --git a/drivers/ide/Kconfig b/drivers/ide/Kconfig index 937945e471df..4ee85fcf9aaf 100644 --- a/drivers/ide/Kconfig +++ b/drivers/ide/Kconfig @@ -137,6 +137,7 @@ config BLK_DEV_DELKIN config BLK_DEV_IDECD tristate "Include IDE/ATAPI CDROM support" + select IDE_ATAPI ---help--- If you have a CD-ROM drive using the ATAPI protocol, say Y. ATAPI is a newer protocol used by IDE CD-ROM and TAPE drives, similar to the diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c index 74273fdc8827..8884877bd2b5 100644 --- a/drivers/ide/ide-atapi.c +++ b/drivers/ide/ide-atapi.c @@ -252,6 +252,18 @@ int ide_scsi_expiry(ide_drive_t *drive) } EXPORT_SYMBOL_GPL(ide_scsi_expiry); +int ide_cd_get_xferlen(struct request *rq) +{ + if (blk_fs_request(rq)) + return 32768; + else if (blk_sense_request(rq) || blk_pc_request(rq) || + rq->cmd_type == REQ_TYPE_ATA_PC) + return rq->data_len; + else + return 0; +} +EXPORT_SYMBOL_GPL(ide_cd_get_xferlen); + /* * This is the usual interrupt handler which will be called during a packet * command. We will transfer some of the data (as requested by the drive) @@ -551,7 +563,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout, struct ide_atapi_pc *pc = drive->pc; ide_hwif_t *hwif = drive->hwif; u32 tf_flags; - u16 bcount = 0; + u16 bcount; u8 scsi = !!(drive->dev_flags & IDE_DFLAG_SCSI); /* We haven't transferred any data yet */ @@ -560,6 +572,7 @@ ide_startstop_t ide_issue_pc(ide_drive_t *drive, unsigned int timeout, if (dev_is_idecd(drive)) { tf_flags = IDE_TFLAG_OUT_NSECT | IDE_TFLAG_OUT_LBAL; + bcount = ide_cd_get_xferlen(hwif->hwgroup->rq); } else if (scsi) { tf_flags = 0; bcount = min(pc->req_xfer, 63 * 1024); diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c index 65e5513758b0..8d3c7714682e 100644 --- a/drivers/ide/ide-cd.c +++ b/drivers/ide/ide-cd.c @@ -1214,8 +1214,9 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, __func__, rq->cmd[0], rq->cmd_type, (unsigned long long)block); + xferlen = ide_cd_get_xferlen(rq); + if (blk_fs_request(rq)) { - xferlen = 32768; fn = cdrom_start_rw_cont; if (cdrom_start_rw(drive, rq) == ide_stopped) @@ -1225,7 +1226,6 @@ static ide_startstop_t ide_cd_do_request(ide_drive_t *drive, struct request *rq, return ide_stopped; } else if (blk_sense_request(rq) || blk_pc_request(rq) || rq->cmd_type == REQ_TYPE_ATA_PC) { - xferlen = rq->data_len; fn = cdrom_do_newpc_cont; if (!rq->timeout) diff --git a/include/linux/ide.h b/include/linux/ide.h index eb4c01f7f253..e35ff6827897 100644 --- a/include/linux/ide.h +++ b/include/linux/ide.h @@ -1254,6 +1254,8 @@ static inline unsigned long ide_scsi_get_timeout(struct ide_atapi_pc *pc) int ide_scsi_expiry(ide_drive_t *); +int ide_cd_get_xferlen(struct request *); + ide_startstop_t ide_issue_pc(ide_drive_t *, unsigned int, ide_expiry_t *); ide_startstop_t do_rw_taskfile(ide_drive_t *, ide_task_t *); |