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authorBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-13 21:39:31 +0200
committerBartlomiej Zolnierkiewicz <bzolnier@gmail.com>2008-10-13 21:39:31 +0200
commit2b9efba48283f34083df6bc53f6752fba4e4d409 (patch)
tree215d86f1934c896f8ec609ab033b69bf5b99e217 /drivers/ide/ide-tape.c
parentb14c72127fbe8f97e49de7437520175673f7306a (diff)
downloadlinux-2b9efba48283f34083df6bc53f6752fba4e4d409.tar.bz2
ide: add pointer to the current packet command to ide_drive_t
* Add pointer to the current packet command (struct ide_atapi_pc *pc) to ide_drive_t and use it instead of the pointer in struct ide_*_obj. * Use drive->pc in ide_{issue,transfer}_pc() and ide_pc_intr() instead of 'pc' argument. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Diffstat (limited to 'drivers/ide/ide-tape.c')
-rw-r--r--drivers/ide/ide-tape.c31
1 files changed, 11 insertions, 20 deletions
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 70b499a617d8..5b2ac04d9be9 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -172,15 +172,11 @@ typedef struct ide_tape_obj {
struct kref kref;
/*
- * pc points to the current processed packet command.
- *
* failed_pc points to the last failed packet command, or contains
* NULL if we do not need to retry any packet command. This is
* required since an additional packet command is needed before the
* retry, to get detailed information on what went wrong.
*/
- /* Current packet command */
- struct ide_atapi_pc *pc;
/* Last failed packet command */
struct ide_atapi_pc *failed_pc;
/* used by REQ_IDETAPE_{READ,WRITE} requests */
@@ -527,7 +523,7 @@ static void ide_tape_handle_dsc(ide_drive_t *);
static void ide_tape_callback(ide_drive_t *drive, int dsc)
{
idetape_tape_t *tape = drive->driver_data;
- struct ide_atapi_pc *pc = tape->pc;
+ struct ide_atapi_pc *pc = drive->pc;
int uptodate = pc->error ? 0 : 1;
debug_log(DBG_PROCS, "Enter %s\n", __func__);
@@ -563,7 +559,7 @@ static void ide_tape_callback(ide_drive_t *drive, int dsc)
if (pc->error)
uptodate = pc->error;
} else if (pc->c[0] == READ_POSITION && uptodate) {
- u8 *readpos = tape->pc->buf;
+ u8 *readpos = pc->buf;
debug_log(DBG_SENSE, "BOP - %s\n",
(readpos[0] & 0x80) ? "Yes" : "No");
@@ -659,9 +655,7 @@ static int ide_tape_io_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
*/
static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
{
- idetape_tape_t *tape = drive->driver_data;
-
- return ide_pc_intr(drive, tape->pc, idetape_pc_intr, WAIT_TAPE_CMD,
+ return ide_pc_intr(drive, idetape_pc_intr, WAIT_TAPE_CMD,
NULL, idetape_update_buffers, idetape_retry_pc,
ide_tape_io_buffers);
}
@@ -669,7 +663,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
/*
* Packet Command Interface
*
- * The current Packet Command is available in tape->pc, and will not change
+ * The current Packet Command is available in drive->pc, and will not change
* until we finish handling it. Each packet command is associated with a
* callback function that will be called when the command is finished.
*
@@ -704,10 +698,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
*/
static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive)
{
- idetape_tape_t *tape = drive->driver_data;
-
- return ide_transfer_pc(drive, tape->pc, idetape_pc_intr,
- WAIT_TAPE_CMD, NULL);
+ return ide_transfer_pc(drive, idetape_pc_intr, WAIT_TAPE_CMD, NULL);
}
static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
@@ -715,7 +706,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
{
idetape_tape_t *tape = drive->driver_data;
- if (tape->pc->c[0] == REQUEST_SENSE &&
+ if (drive->pc->c[0] == REQUEST_SENSE &&
pc->c[0] == REQUEST_SENSE) {
printk(KERN_ERR "ide-tape: possible ide-tape.c bug - "
"Two request sense in serial were issued\n");
@@ -723,8 +714,9 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
if (tape->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)
tape->failed_pc = pc;
+
/* Set the current packet command */
- tape->pc = pc;
+ drive->pc = pc;
if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
(pc->flags & PC_FLAG_ABORT)) {
@@ -755,8 +747,7 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive,
pc->retries++;
- return ide_issue_pc(drive, pc, idetape_transfer_pc,
- WAIT_TAPE_CMD, NULL);
+ return ide_issue_pc(drive, idetape_transfer_pc, WAIT_TAPE_CMD, NULL);
}
/* A mode sense command is used to "sense" tape parameters. */
@@ -790,7 +781,7 @@ static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
- struct ide_atapi_pc *pc = tape->pc;
+ struct ide_atapi_pc *pc = drive->pc;
u8 stat;
stat = hwif->tp_ops->read_status(hwif);
@@ -867,7 +858,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
}
/* Retry a failed packet command */
- if (tape->failed_pc && tape->pc->c[0] == REQUEST_SENSE) {
+ if (tape->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {
pc = tape->failed_pc;
goto out;
}