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>
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index fb27c94..0069c4f 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -204,12 +204,13 @@
EXPORT_SYMBOL_GPL(ide_set_media_lock);
/* TODO: unify the code thus making some arguments go away */
-ide_startstop_t ide_pc_intr(ide_drive_t *drive, struct ide_atapi_pc *pc,
+ide_startstop_t ide_pc_intr(ide_drive_t *drive,
ide_handler_t *handler, unsigned int timeout, ide_expiry_t *expiry,
void (*update_buffers)(ide_drive_t *, struct ide_atapi_pc *),
void (*retry_pc)(ide_drive_t *),
int (*io_buffers)(ide_drive_t *, struct ide_atapi_pc *, unsigned, int))
{
+ struct ide_atapi_pc *pc = drive->pc;
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->hwgroup->rq;
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
@@ -416,10 +417,11 @@
return ireason;
}
-ide_startstop_t ide_transfer_pc(ide_drive_t *drive, struct ide_atapi_pc *pc,
+ide_startstop_t ide_transfer_pc(ide_drive_t *drive,
ide_handler_t *handler, unsigned int timeout,
ide_expiry_t *expiry)
{
+ struct ide_atapi_pc *pc = drive->pc;
ide_hwif_t *hwif = drive->hwif;
struct request *rq = hwif->hwgroup->rq;
ide_startstop_t startstop;
@@ -458,10 +460,11 @@
}
EXPORT_SYMBOL_GPL(ide_transfer_pc);
-ide_startstop_t ide_issue_pc(ide_drive_t *drive, struct ide_atapi_pc *pc,
+ide_startstop_t ide_issue_pc(ide_drive_t *drive,
ide_handler_t *handler, unsigned int timeout,
ide_expiry_t *expiry)
{
+ struct ide_atapi_pc *pc = drive->pc;
ide_hwif_t *hwif = drive->hwif;
u16 bcount;
u8 dma = 0;
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index b330806..cb89caf 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -159,7 +159,7 @@
static void ide_floppy_callback(ide_drive_t *drive, int dsc)
{
idefloppy_floppy_t *floppy = drive->driver_data;
- struct ide_atapi_pc *pc = floppy->pc;
+ struct ide_atapi_pc *pc = drive->pc;
int uptodate = pc->error ? 0 : 1;
debug_log("Reached %s\n", __func__);
@@ -171,7 +171,7 @@
(pc->rq && blk_pc_request(pc->rq)))
uptodate = 1; /* FIXME */
else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
- u8 *buf = floppy->pc->buf;
+ u8 *buf = pc->buf;
if (!pc->error) {
floppy->sense_key = buf[2] & 0x0F;
@@ -219,9 +219,7 @@
/* The usual interrupt handler called during a packet command. */
static ide_startstop_t idefloppy_pc_intr(ide_drive_t *drive)
{
- idefloppy_floppy_t *floppy = drive->driver_data;
-
- return ide_pc_intr(drive, floppy->pc, idefloppy_pc_intr,
+ return ide_pc_intr(drive, idefloppy_pc_intr,
WAIT_FLOPPY_CMD, NULL, idefloppy_update_buffers,
idefloppy_retry_pc, ide_io_buffers);
}
@@ -234,10 +232,8 @@
*/
static int idefloppy_transfer_pc(ide_drive_t *drive)
{
- idefloppy_floppy_t *floppy = drive->driver_data;
-
/* Send the actual packet */
- drive->hwif->tp_ops->output_data(drive, NULL, floppy->pc->c, 12);
+ drive->hwif->tp_ops->output_data(drive, NULL, drive->pc->c, 12);
/* Timeout for the packet command */
return WAIT_FLOPPY_CMD;
@@ -251,7 +247,6 @@
static ide_startstop_t idefloppy_start_pc_transfer(ide_drive_t *drive)
{
idefloppy_floppy_t *floppy = drive->driver_data;
- struct ide_atapi_pc *pc = floppy->pc;
ide_expiry_t *expiry;
unsigned int timeout;
@@ -271,7 +266,7 @@
expiry = NULL;
}
- return ide_transfer_pc(drive, pc, idefloppy_pc_intr, timeout, expiry);
+ return ide_transfer_pc(drive, idefloppy_pc_intr, timeout, expiry);
}
static void ide_floppy_report_error(idefloppy_floppy_t *floppy,
@@ -298,8 +293,9 @@
if (floppy->failed_pc == NULL &&
pc->c[0] != GPCMD_REQUEST_SENSE)
floppy->failed_pc = pc;
+
/* Set the current packet command */
- floppy->pc = pc;
+ drive->pc = pc;
if (pc->retries > IDEFLOPPY_MAX_PC_RETRIES) {
if (!(pc->flags & PC_FLAG_SUPPRESS_ERROR))
@@ -316,7 +312,7 @@
pc->retries++;
- return ide_issue_pc(drive, pc, idefloppy_start_pc_transfer,
+ return ide_issue_pc(drive, idefloppy_start_pc_transfer,
WAIT_FLOPPY_CMD, NULL);
}
diff --git a/drivers/ide/ide-floppy.h b/drivers/ide/ide-floppy.h
index ecadc2b..6eee8d3 100644
--- a/drivers/ide/ide-floppy.h
+++ b/drivers/ide/ide-floppy.h
@@ -13,8 +13,6 @@
struct kref kref;
unsigned int openers; /* protected by BKL for now */
- /* Current packet command */
- struct ide_atapi_pc *pc;
/* Last failed packet command */
struct ide_atapi_pc *failed_pc;
/* used for blk_{fs,pc}_request() requests */
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 70b499a..5b2ac04 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -172,15 +172,11 @@
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_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 @@
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 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 @@
/*
* 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_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 @@
{
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 @@
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 @@
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 @@
{
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 @@
}
/* 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;
}