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ide: remove ide_end_request() 

* Add ide_rq_bytes() helper.

* Add blk_noretry_request() quirk to ide_complete_rq() (currently only fs
  requests can be marked as "noretry" so there is no change in behavior).

* Switch current ide_end_request() users to use ide_complete_rq().

  [ No need to check for rq->nr_sectors == 0 in {ide_dma,task_pio}_intr(),
    nsectors == 0 in cdrom_end_request() and err == 0 in ide_do_devset(). ]

* Remove no longer needed ide_end_request().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
This commit is contained in:
Bartlomiej Zolnierkiewicz 2009-03-27 12:46:45 +01:00
parent ba7d479c36
commit 130e886708
11 changed files with 37 additions and 60 deletions
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6
drivers/ide/ide-atapi.c
View File

@ -410,7 +410,8 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
if (rq->errors == 0)
rq->errors = -EIO;
}
ide_end_request(drive, uptodate, 0);
ide_complete_rq(drive, uptodate ? 0 : -EIO,
ide_rq_bytes(rq));
}
return ide_stopped;
@ -469,7 +470,8 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
/* FIXME: don't do partial completions */
if (drive->media == ide_floppy)
ide_end_request(drive, 1, done >> 9);
ide_complete_rq(drive, 0,
done ? done : ide_rq_bytes(rq));
} else
xferfunc(drive, NULL, pc->cur_pos, bcount);

7
drivers/ide/ide-cd.c
View File

@ -298,7 +298,7 @@ static void cdrom_end_request(ide_drive_t *drive, int uptodate)
if (blk_fs_request(rq) == 0 && uptodate <= 0 && rq->errors == 0)
rq->errors = -EIO;
ide_end_request(drive, uptodate, nsectors);
ide_complete_rq(drive, uptodate ? 0 : -EIO, nsectors << 9);
}
static void ide_dump_status_no_sense(ide_drive_t *drive, const char *msg, u8 st)
@ -793,10 +793,11 @@ static ide_startstop_t cdrom_newpc_intr(ide_drive_t *drive)
if (dma_error)
return ide_error(drive, "dma error", stat);
if (blk_fs_request(rq)) {
ide_end_request(drive, 1, rq->nr_sectors);
ide_complete_rq(drive, 0, rq->nr_sectors
? (rq->nr_sectors << 9) : ide_rq_bytes(rq));
return ide_stopped;
} else if (rq->cmd_type == REQ_TYPE_ATA_PC && !rq->bio) {
ide_end_request(drive, 1, 1);
ide_complete_rq(drive, 0, 512);
return ide_stopped;
}
goto end_request;

4
drivers/ide/ide-devsets.c
View File

@ -183,8 +183,6 @@ ide_startstop_t ide_do_devset(ide_drive_t *drive, struct request *rq)
err = setfunc(drive, *(int *)&rq->cmd[1]);
if (err)
rq->errors = err;
else
err = 1;
ide_end_request(drive, err, 0);
ide_complete_rq(drive, err, ide_rq_bytes(rq));
return ide_stopped;
}

2
drivers/ide/ide-disk.c
View File

@ -186,7 +186,7 @@ static ide_startstop_t ide_do_rw_disk(ide_drive_t *drive, struct request *rq,
blk_dump_rq_flags(rq, "ide_do_rw_disk - bad command");
if (rq->errors == 0)
rq->errors = -EIO;
ide_end_request(drive, 0, 0);
ide_complete_rq(drive, -EIO, ide_rq_bytes(rq));
return ide_stopped;
}

3
drivers/ide/ide-dma.c
View File

@ -101,7 +101,8 @@ ide_startstop_t ide_dma_intr(ide_drive_t *drive)
if ((cmd->tf_flags & IDE_TFLAG_FS) == 0)
ide_finish_cmd(drive, cmd, stat);
else
ide_end_request(drive, 1, cmd->rq->nr_sectors);
ide_complete_rq(drive, 0,
cmd->rq->nr_sectors << 9);
return ide_stopped;
}
printk(KERN_ERR "%s: %s: bad DMA status (0x%02x)\n",

2
drivers/ide/ide-eh.c
View File

@ -149,7 +149,7 @@ static inline void ide_complete_drive_reset(ide_drive_t *drive, int err)
if (rq && blk_special_request(rq) && rq->cmd[0] == REQ_DRIVE_RESET) {
if (err <= 0 && rq->errors == 0)
rq->errors = -EIO;
ide_end_request(drive, err ? err : 1, 0);
ide_complete_rq(drive, err ? err : 0, ide_rq_bytes(rq));
}
}

4
drivers/ide/ide-floppy.c
View File

@ -68,7 +68,7 @@ static void idefloppy_update_buffers(ide_drive_t *drive,
struct bio *bio = rq->bio;
while ((bio = rq->bio) != NULL)
ide_end_request(drive, 1, 0);
ide_complete_rq(drive, 0, ide_rq_bytes(rq));
}
static int ide_floppy_callback(ide_drive_t *drive, int dsc)
@ -300,7 +300,7 @@ out_end:
drive->failed_pc = NULL;
if (blk_fs_request(rq) == 0 && rq->errors == 0)
rq->errors = -EIO;
ide_end_request(drive, 0, 0);
ide_complete_rq(drive, -EIO, ide_rq_bytes(rq));
return ide_stopped;
}

61
drivers/ide/ide-io.c
View File

@ -71,48 +71,6 @@ int ide_end_rq(ide_drive_t *drive, struct request *rq, int error,
}
EXPORT_SYMBOL_GPL(ide_end_rq);
/**
* ide_end_request - complete an IDE I/O
* @drive: IDE device for the I/O
* @uptodate:
* @nr_sectors: number of sectors completed
*
* This is our end_request wrapper function. We complete the I/O
* update random number input and dequeue the request, which if
* it was tagged may be out of order.
*/
int ide_end_request (ide_drive_t *drive, int uptodate, int nr_sectors)
{
unsigned int nr_bytes = nr_sectors << 9;
struct request *rq = drive->hwif->rq;
int rc, error = 0;
if (!nr_bytes) {
if (blk_pc_request(rq))
nr_bytes = rq->data_len;
else
nr_bytes = rq->hard_cur_sectors << 9;
}
/*
* if failfast is set on a request, override number of sectors
* and complete the whole request right now
*/
if (blk_noretry_request(rq) && uptodate <= 0)
nr_bytes = rq->hard_nr_sectors << 9;
if (uptodate <= 0)
error = uptodate ? uptodate : -EIO;
rc = ide_end_rq(drive, rq, error, nr_bytes);
if (rc == 0)
drive->hwif->rq = NULL;
return rc;
}
EXPORT_SYMBOL(ide_end_request);
void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
{
struct ide_taskfile *tf = &cmd->tf;
@ -141,12 +99,29 @@ void ide_complete_cmd(ide_drive_t *drive, struct ide_cmd *cmd, u8 stat, u8 err)
kfree(cmd);
}
/* obsolete, blk_rq_bytes() should be used instead */
unsigned int ide_rq_bytes(struct request *rq)
{
if (blk_pc_request(rq))
return rq->data_len;
else
return rq->hard_cur_sectors << 9;
}
EXPORT_SYMBOL_GPL(ide_rq_bytes);
int ide_complete_rq(ide_drive_t *drive, int error, unsigned int nr_bytes)
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->rq;
int rc;
/*
* if failfast is set on a request, override number of sectors
* and complete the whole request right now
*/
if (blk_noretry_request(rq) && error <= 0)
nr_bytes = rq->hard_nr_sectors << 9;
rc = ide_end_rq(drive, rq, error, nr_bytes);
if (rc == 0)
hwif->rq = NULL;
@ -170,7 +145,7 @@ void ide_kill_rq(ide_drive_t *drive, struct request *rq)
rq->errors = IDE_DRV_ERROR_GENERAL;
else if (blk_fs_request(rq) == 0 && rq->errors == 0)
rq->errors = -EIO;
ide_end_request(drive, 0, 0);
ide_complete_rq(drive, -EIO, ide_rq_bytes(rq));
}
}

2
drivers/ide/ide-tape.c
View File

@ -762,7 +762,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
"request queue (%d)\n", drive->name, rq->cmd_type);
if (blk_fs_request(rq) == 0 && rq->errors == 0)
rq->errors = -EIO;
ide_end_request(drive, 0, 0);
ide_complete_rq(drive, -EIO, ide_rq_bytes(rq));
return ide_stopped;
}

4
drivers/ide/ide-taskfile.c
View File

@ -283,7 +283,7 @@ static void ide_error_cmd(ide_drive_t *drive, struct ide_cmd *cmd)
}
if (sectors > 0)
ide_end_request(drive, 1, sectors);
ide_complete_rq(drive, 0, sectors << 9);
}
}
@ -352,7 +352,7 @@ out_end:
if ((cmd->tf_flags & IDE_TFLAG_FS) == 0)
ide_finish_cmd(drive, cmd, stat);
else
ide_end_request(drive, 1, cmd->rq->nr_sectors);
ide_complete_rq(drive, 0, cmd->rq->nr_sectors << 9);
return ide_stopped;
out_err:
ide_error_cmd(drive, cmd);

2
include/linux/ide.h
View File

@ -1131,8 +1131,8 @@ int generic_ide_ioctl(ide_drive_t *, struct block_device *, unsigned, unsigned l
extern int ide_vlb_clk;
extern int ide_pci_clk;
unsigned int ide_rq_bytes(struct request *);
int ide_end_rq(ide_drive_t *, struct request *, int, unsigned int);
int ide_end_request(ide_drive_t *, int, int);
void ide_kill_rq(ide_drive_t *, struct request *);
void __ide_set_handler(ide_drive_t *, ide_handler_t *, unsigned int,