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path: root/drivers/ide/ide-atapi.c
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Diffstat (limited to 'drivers/ide/ide-atapi.c')
-rw-r--r--drivers/ide/ide-atapi.c52
1 files changed, 31 insertions, 21 deletions
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index 972c522516f8..5cefe12f5622 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -94,16 +94,18 @@ int ide_queue_pc_tail(ide_drive_t *drive, struct gendisk *disk,
rq->special = (char *)pc;
if (pc->req_xfer) {
- rq->data = pc->buf;
- rq->data_len = pc->req_xfer;
+ error = blk_rq_map_kern(drive->queue, rq, pc->buf, pc->req_xfer,
+ GFP_NOIO);
+ if (error)
+ goto put_req;
}
memcpy(rq->cmd, pc->c, 12);
if (drive->media == ide_tape)
rq->cmd[13] = REQ_IDETAPE_PC1;
error = blk_execute_rq(drive->queue, disk, rq, 0);
+put_req:
blk_put_request(rq);
-
return error;
}
EXPORT_SYMBOL_GPL(ide_queue_pc_tail);
@@ -168,6 +170,7 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
struct request_sense *sense = &drive->sense_data;
struct request *sense_rq = &drive->sense_rq;
unsigned int cmd_len, sense_len;
+ int err;
debug_log("%s: enter\n", __func__);
@@ -193,13 +196,19 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
memset(sense, 0, sizeof(*sense));
blk_rq_init(rq->q, sense_rq);
- sense_rq->rq_disk = rq->rq_disk;
- sense_rq->data = sense;
+ err = blk_rq_map_kern(drive->queue, sense_rq, sense, sense_len,
+ GFP_NOIO);
+ if (unlikely(err)) {
+ if (printk_ratelimit())
+ printk(KERN_WARNING "%s: failed to map sense buffer\n",
+ drive->name);
+ return;
+ }
+
+ sense_rq->rq_disk = rq->rq_disk;
sense_rq->cmd[0] = GPCMD_REQUEST_SENSE;
sense_rq->cmd[4] = cmd_len;
- sense_rq->data_len = sense_len;
-
sense_rq->cmd_type = REQ_TYPE_SENSE;
sense_rq->cmd_flags |= REQ_PREEMPT;
@@ -210,9 +219,14 @@ void ide_prep_sense(ide_drive_t *drive, struct request *rq)
}
EXPORT_SYMBOL_GPL(ide_prep_sense);
-void ide_queue_sense_rq(ide_drive_t *drive, void *special)
+int ide_queue_sense_rq(ide_drive_t *drive, void *special)
{
- BUG_ON(!drive->sense_rq_armed);
+ /* deferred failure from ide_prep_sense() */
+ if (!drive->sense_rq_armed) {
+ printk(KERN_WARNING "%s: failed queue sense request\n",
+ drive->name);
+ return -ENOMEM;
+ }
drive->sense_rq.special = special;
drive->sense_rq_armed = false;
@@ -221,6 +235,7 @@ void ide_queue_sense_rq(ide_drive_t *drive, void *special)
elv_add_request(drive->queue, &drive->sense_rq,
ELEVATOR_INSERT_FRONT, 0);
+ return 0;
}
EXPORT_SYMBOL_GPL(ide_queue_sense_rq);
@@ -239,13 +254,14 @@ void ide_retry_pc(ide_drive_t *drive)
/* init pc from sense_rq */
ide_init_pc(pc);
memcpy(pc->c, sense_rq->cmd, 12);
- pc->buf = sense_rq->data;
+ pc->buf = bio_data(sense_rq->bio); /* pointer to mapped address */
pc->req_xfer = sense_rq->data_len;
if (drive->media == ide_tape)
set_bit(IDE_AFLAG_IGNORE_DSC, &drive->atapi_flags);
- ide_queue_sense_rq(drive, pc);
+ if (ide_queue_sense_rq(drive, pc))
+ ide_complete_rq(drive, -EIO, blk_rq_bytes(drive->hwif->rq));
}
EXPORT_SYMBOL_GPL(ide_retry_pc);
@@ -317,7 +333,6 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
struct ide_cmd *cmd = &hwif->cmd;
struct request *rq = hwif->rq;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
- xfer_func_t *xferfunc;
unsigned int timeout, done;
u16 bcount;
u8 stat, ireason, dsc = 0;
@@ -411,7 +426,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
rq->errors = -EIO;
}
- if (drive->media == ide_tape)
+ if (drive->media == ide_tape && !rq->bio)
done = ide_rq_bytes(rq); /* FIXME */
else
done = blk_rq_bytes(rq);
@@ -448,16 +463,11 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
return ide_do_reset(drive);
}
- xferfunc = write ? tp_ops->output_data : tp_ops->input_data;
-
- if (drive->media == ide_floppy && pc->buf == NULL) {
+ if (drive->media == ide_tape && pc->bh)
+ done = drive->pc_io_buffers(drive, pc, bcount, write);
+ else {
done = min_t(unsigned int, bcount, cmd->nleft);
ide_pio_bytes(drive, cmd, write, done);
- } else if (drive->media == ide_tape && pc->bh) {
- done = drive->pc_io_buffers(drive, pc, bcount, write);
- } else {
- done = min_t(unsigned int, bcount, pc->req_xfer - pc->xferred);
- xferfunc(drive, NULL, pc->cur_pos, done);
}
/* Update the current position */