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| author |   Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-31 20:15:13 +0200 |
|---|---|---|
| committer | Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> | 2009-03-31 20:15:13 +0200 |
| commit | a08915ba594da66145f33a972db578a58b9135f1 (patch) | |
| tree | d27379ab4ff2b101a74ffe594e2dfa2939131ee0 /drivers/ide/ide-taskfile.c | |
| parent | ide-cd: cleanup ide_cd_do_request() (diff) | |
| download | linux-dev-a08915ba594da66145f33a972db578a58b9135f1.tar.xz linux-dev-a08915ba594da66145f33a972db578a58b9135f1.zip | |
ide-cd: use scatterlists for PIO transfers (fs requests)
* Export ide_pio_bytes().
* Add ->last_xfer_len field to struct ide_cmd.
* Add ide_cd_error_cmd() helper to ide-cd.
* Convert ide-cd to use scatterlists also for PIO transfers (fs requests
only for now) and get rid of partial completions (except when the error
happens -- which is still subject to change later because looking at
ATAPI spec it seems that the device is free to error the whole transfer
with setting the Error bit only on the last transfer chunk).
* Update ide_cd_{prepare_rw,restore_request,do_request}() accordingly.
* Inline ide_cd_restore_request() into cdrom_start_rw().
Cc: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-taskfile.c')
| -rw-r--r-- | drivers/ide/ide-taskfile.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/ide/ide-taskfile.c b/drivers/ide/ide-taskfile.c index 0e333ecf2ad6..a3b7a50562b2 100644 --- a/drivers/ide/ide-taskfile.c +++ b/drivers/ide/ide-taskfile.c @@ -188,8 +188,8 @@ static u8 wait_drive_not_busy(ide_drive_t *drive) return stat; } -static void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, - unsigned int write, unsigned int len) +void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, + unsigned int write, unsigned int len) { ide_hwif_t *hwif = drive->hwif; struct scatterlist *sg = hwif->sg_table; @@ -243,6 +243,7 @@ static void ide_pio_bytes(ide_drive_t *drive, struct ide_cmd *cmd, len -= nr_bytes; } } +EXPORT_SYMBOL_GPL(ide_pio_bytes); static void ide_pio_datablock(ide_drive_t *drive, struct ide_cmd *cmd, unsigned int write) |