ide: add pointer to the current packet command to ide_drive_t

[linux-2.6-omap-h63xx.git] / drivers / ide / ide-tape.c

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 70b499a617d8022ca4c56d5dd2a22b8aad4ad909..5b2ac04d9be9253a8f62ea5b6797e61c235b45ad 100644 (file)
--- 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;
        }