summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/ide/ide-tape.c33
1 files changed, 11 insertions, 22 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 3468ece98496..7b2032bc357b 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -155,7 +155,8 @@ typedef struct ide_tape_obj {
* other device. Note that at most we will have only one DSC (usually
* data transfer) request in the device request queue.
*/
- struct request *postponed_rq;
+ bool postponed_rq;
+
/* The time in which we started polling for DSC */
unsigned long dsc_polling_start;
/* Timer used to poll for dsc */
@@ -372,15 +373,14 @@ static int ide_tape_callback(ide_drive_t *drive, int dsc)
* Postpone the current request so that ide.c will be able to service requests
* from another device on the same port while we are polling for DSC.
*/
-static void idetape_postpone_request(ide_drive_t *drive)
+static void ide_tape_stall_queue(ide_drive_t *drive)
{
idetape_tape_t *tape = drive->driver_data;
- struct request *rq = drive->hwif->rq;
ide_debug_log(IDE_DBG_FUNC, "cmd: 0x%x, dsc_poll_freq: %lu",
- rq->cmd[0], tape->dsc_poll_freq);
+ drive->hwif->rq->cmd[0], tape->dsc_poll_freq);
- tape->postponed_rq = rq;
+ tape->postponed_rq = true;
ide_stall_queue(drive, tape->dsc_poll_freq);
}
@@ -394,7 +394,7 @@ static void ide_tape_handle_dsc(ide_drive_t *drive)
tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST;
tape->dsc_timeout = jiffies + IDETAPE_DSC_MA_TIMEOUT;
/* Allow ide.c to handle other requests */
- idetape_postpone_request(drive);
+ ide_tape_stall_queue(drive);
}
/*
@@ -567,7 +567,6 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = NULL;
- struct request *postponed_rq = tape->postponed_rq;
struct ide_cmd cmd;
u8 stat;
@@ -583,18 +582,6 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
goto out;
}
- if (postponed_rq != NULL)
- if (rq != postponed_rq) {
- printk(KERN_ERR "ide-tape: ide-tape.c bug - "
- "Two DSC requests were queued\n");
- drive->failed_pc = NULL;
- rq->errors = 0;
- ide_complete_rq(drive, 0, blk_rq_bytes(rq));
- return ide_stopped;
- }
-
- tape->postponed_rq = NULL;
-
/*
* If the tape is still busy, postpone our request and service
* the other device meanwhile.
@@ -612,7 +599,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
if (!(drive->atapi_flags & IDE_AFLAG_IGNORE_DSC) &&
!(stat & ATA_DSC)) {
- if (postponed_rq == NULL) {
+ if (!tape->postponed_rq) {
tape->dsc_polling_start = jiffies;
tape->dsc_poll_freq = tape->best_dsc_rw_freq;
tape->dsc_timeout = jiffies + IDETAPE_DSC_RW_TIMEOUT;
@@ -629,10 +616,12 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
tape->dsc_polling_start +
IDETAPE_DSC_MA_THRESHOLD))
tape->dsc_poll_freq = IDETAPE_DSC_MA_SLOW;
- idetape_postpone_request(drive);
+ ide_tape_stall_queue(drive);
return ide_stopped;
- } else
+ } else {
drive->atapi_flags &= ~IDE_AFLAG_IGNORE_DSC;
+ tape->postponed_rq = false;
+ }
if (rq->cmd[13] & REQ_IDETAPE_READ) {
pc = &tape->queued_pc;