}
}
-/* 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;
* and complete the whole request right now
*/
if (blk_noretry_request(rq) && error <= 0)
- nr_bytes = rq->hard_nr_sectors << 9;
+ nr_bytes = blk_rq_sectors(rq) << 9;
rc = ide_end_rq(drive, rq, error, nr_bytes);
if (rc == 0)
if ((media == ide_floppy || media == ide_tape) && drv_req) {
rq->errors = 0;
- ide_complete_rq(drive, 0, blk_rq_bytes(rq));
} else {
if (media == ide_tape)
rq->errors = IDE_DRV_ERROR_GENERAL;
else if (blk_fs_request(rq) == 0 && rq->errors == 0)
rq->errors = -EIO;
- ide_complete_rq(drive, -EIO, ide_rq_bytes(rq));
}
+
+ ide_complete_rq(drive, -EIO, blk_rq_bytes(rq));
}
static void ide_tf_set_specify_cmd(ide_drive_t *drive, struct ide_taskfile *tf)
if (cmd) {
if (cmd->protocol == ATA_PROT_PIO) {
- ide_init_sg_cmd(cmd, rq->nr_sectors << 9);
+ ide_init_sg_cmd(cmd, blk_rq_sectors(rq) << 9);
ide_map_sg(drive, cmd);
}
drv = *(struct ide_driver **)rq->rq_disk->private_data;
- return drv->do_request(drive, rq, rq->sector);
+ return drv->do_request(drive, rq, blk_rq_pos(rq));
}
return do_special(drive);
kill_rq:
if (!ide_lock_port(hwif)) {
ide_hwif_t *prev_port;
+
+ WARN_ON_ONCE(hwif->rq);
repeat:
prev_port = hwif->host->cur_port;
- hwif->rq = NULL;
-
if (drive->dev_flags & IDE_DFLAG_SLEEPING &&
time_after(drive->sleep, jiffies)) {
ide_unlock_port(hwif);
if ((hwif->host->host_flags & IDE_HFLAG_SERIALIZE) &&
hwif != prev_port) {
+ ide_drive_t *cur_dev =
+ prev_port ? prev_port->cur_dev : NULL;
+
/*
* set nIEN for previous port, drives in the
- * quirk_list may not like intr setups/cleanups
+ * quirk list may not like intr setups/cleanups
*/
- if (prev_port && prev_port->cur_dev->quirk_list == 0)
+ if (cur_dev &&
+ (cur_dev->dev_flags & IDE_DFLAG_NIEN_QUIRK) == 0)
prev_port->tp_ops->write_devctl(prev_port,
ATA_NIEN |
ATA_DEVCTL_OBS);
* we know that the queue isn't empty, but this can happen
* if the q->prep_rq_fn() decides to kill a request
*/
- rq = elv_next_request(drive->queue);
+ if (!rq)
+ rq = blk_fetch_request(drive->queue);
+
spin_unlock_irq(q->queue_lock);
spin_lock_irq(&hwif->lock);
/*
* Sanity: don't accept a request that isn't a PM request
* if we are currently power managed. This is very important as
- * blk_stop_queue() doesn't prevent the elv_next_request()
+ * blk_stop_queue() doesn't prevent the blk_fetch_request()
* above to return us whatever is in the queue. Since we call
* ide_do_request() ourselves, we end up taking requests while
* the queue is blocked...
startstop = start_request(drive, rq);
spin_lock_irq(&hwif->lock);
- if (startstop == ide_stopped)
+ if (startstop == ide_stopped) {
+ rq = hwif->rq;
+ hwif->rq = NULL;
goto repeat;
+ }
} else
goto plug_device;
out:
plug_device_2:
spin_lock_irq(q->queue_lock);
+ if (rq)
+ blk_requeue_request(q, rq);
if (!elv_queue_empty(q))
blk_plug_device(q);
}
-static void ide_plug_device(ide_drive_t *drive)
+void ide_requeue_and_plug(ide_drive_t *drive, struct request *rq)
{
struct request_queue *q = drive->queue;
unsigned long flags;
spin_lock_irqsave(q->queue_lock, flags);
+
+ if (rq)
+ blk_requeue_request(q, rq);
if (!elv_queue_empty(q))
blk_plug_device(q);
+
spin_unlock_irqrestore(q->queue_lock, flags);
}
unsigned long flags;
int wait = -1;
int plug_device = 0;
+ struct request *uninitialized_var(rq_in_flight);
spin_lock_irqsave(&hwif->lock, flags);
} else if (drive_is_ready(drive)) {
if (drive->waiting_for_dma)
hwif->dma_ops->dma_lost_irq(drive);
- if (hwif->ack_intr)
- hwif->ack_intr(hwif);
+ if (hwif->port_ops && hwif->port_ops->clear_irq)
+ hwif->port_ops->clear_irq(drive);
+
printk(KERN_WARNING "%s: lost interrupt\n",
drive->name);
startstop = handler(drive);
spin_lock_irq(&hwif->lock);
enable_irq(hwif->irq);
if (startstop == ide_stopped && hwif->polling == 0) {
+ rq_in_flight = hwif->rq;
+ hwif->rq = NULL;
ide_unlock_port(hwif);
plug_device = 1;
}
if (plug_device) {
ide_unlock_host(hwif->host);
- ide_plug_device(drive);
+ ide_requeue_and_plug(drive, rq_in_flight);
}
}
ide_startstop_t startstop;
irqreturn_t irq_ret = IRQ_NONE;
int plug_device = 0;
+ struct request *uninitialized_var(rq_in_flight);
if (host->host_flags & IDE_HFLAG_SERIALIZE) {
if (hwif != host->cur_port)
spin_lock_irqsave(&hwif->lock, flags);
- if (hwif->ack_intr && hwif->ack_intr(hwif) == 0)
+ if (hwif->port_ops && hwif->port_ops->test_irq &&
+ hwif->port_ops->test_irq(hwif) == 0)
goto out;
handler = hwif->handler;
*/
if (startstop == ide_stopped && hwif->polling == 0) {
BUG_ON(hwif->handler);
+ rq_in_flight = hwif->rq;
+ hwif->rq = NULL;
ide_unlock_port(hwif);
plug_device = 1;
}
out_early:
if (plug_device) {
ide_unlock_host(hwif->host);
- ide_plug_device(drive);
+ ide_requeue_and_plug(drive, rq_in_flight);
}
return irq_ret;
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff