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-rw-r--r--drivers/ide/ide-atapi.c52
-rw-r--r--drivers/ide/ide-cd.c28
-rw-r--r--drivers/ide/ide-io.c3
-rw-r--r--drivers/ide/ide-tape.c3
-rw-r--r--include/linux/ide.h2
5 files changed, 52 insertions, 36 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 */
diff --git a/drivers/ide/ide-cd.c b/drivers/ide/ide-cd.c
index 061d7bbcd34a..673628790f10 100644
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -210,10 +210,12 @@ static void ide_cd_complete_failed_rq(ide_drive_t *drive, struct request *rq)
{
/*
* For REQ_TYPE_SENSE, "rq->special" points to the original
- * failed request
+ * failed request. Also, the sense data should be read
+ * directly from rq which might be different from the original
+ * sense buffer if it got copied during mapping.
*/
struct request *failed = (struct request *)rq->special;
- struct request_sense *sense = &drive->sense_data;
+ void *sense = bio_data(rq->bio);
if (failed) {
if (failed->sense) {
@@ -398,7 +400,7 @@ static int cdrom_decode_status(ide_drive_t *drive, u8 stat)
/* if we got a CHECK_CONDITION status, queue a request sense command */
if (stat & ATA_ERR)
- ide_queue_sense_rq(drive, NULL);
+ return ide_queue_sense_rq(drive, NULL) ? 2 : 1;
return 1;
end_request:
@@ -412,8 +414,7 @@ end_request:
hwif->rq = NULL;
- ide_queue_sense_rq(drive, rq);
- return 1;
+ return ide_queue_sense_rq(drive, rq) ? 2 : 1;
} else
return 2;
}
@@ -507,8 +508,12 @@ int ide_cd_queue_pc(ide_drive_t *drive, const unsigned char *cmd,
rq->cmd_flags |= cmd_flags;
rq->timeout = timeout;
if (buffer) {
- rq->data = buffer;
- rq->data_len = *bufflen;
+ error = blk_rq_map_kern(drive->queue, rq, buffer,
+ *bufflen, GFP_NOIO);
+ if (error) {
+ blk_put_request(rq);
+ return error;
+ }
}
error = blk_execute_rq(drive->queue, info->disk, rq, 0);
@@ -802,15 +807,10 @@ static void cdrom_do_block_pc(ide_drive_t *drive, struct request *rq)
drive->dma = 0;
/* sg request */
- if (rq->bio || ((rq->cmd_type == REQ_TYPE_ATA_PC) && rq->data_len)) {
+ if (rq->bio) {
struct request_queue *q = drive->queue;
+ char *buf = bio_data(rq->bio);
unsigned int alignment;
- char *buf;
-
- if (rq->bio)
- buf = bio_data(rq->bio);
- else
- buf = rq->data;
drive->dma = !!(drive->dev_flags & IDE_DFLAG_USING_DMA);
diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c
index 9b9e8b1aae5e..3245c2dbda33 100644
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -481,6 +481,9 @@ void do_ide_request(struct request_queue *q)
spin_unlock_irq(q->queue_lock);
+ /* HLD do_request() callback might sleep, make sure it's okay */
+ might_sleep();
+
if (ide_lock_host(host, hwif))
goto plug_device_2;
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 8324dfa78a3f..9b762a2d5d95 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -850,6 +850,9 @@ out:
cmd.rq = rq;
+ ide_init_sg_cmd(&cmd, pc->req_xfer);
+ ide_map_sg(drive, &cmd);
+
return ide_tape_issue_pc(drive, &cmd, pc);
}
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 9e67ccac3c1f..1957461ac762 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1183,7 +1183,7 @@ void ide_create_request_sense_cmd(ide_drive_t *, struct ide_atapi_pc *);
void ide_retry_pc(ide_drive_t *drive);
void ide_prep_sense(ide_drive_t *drive, struct request *rq);
-void ide_queue_sense_rq(ide_drive_t *drive, void *special);
+int ide_queue_sense_rq(ide_drive_t *drive, void *special);
int ide_cd_expiry(ide_drive_t *);
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-02 06:03:36 +0000