ide-tape: remove IDETAPE_DEBUG_BUGS

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 9908466..3d15e8e 100644 (file)
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -107,8 +107,6 @@ typedef struct os_dat_s {
  *     The following are used to debug the driver:
  *
  *     Setting IDETAPE_DEBUG_LOG to 1 will log driver flow control.
- *     Setting IDETAPE_DEBUG_BUGS to 1 will enable self-sanity checks in
- *     some places.
  *
  *     Setting them to 0 will restore normal operation mode:
  *
@@ -121,7 +119,6 @@ typedef struct os_dat_s {
  *     esthetic.
  */
 #define IDETAPE_DEBUG_LOG              0
-#define IDETAPE_DEBUG_BUGS             1
 
 /*
  *     After each failed packet command we issue a request sense command
@@ -847,14 +844,12 @@ static void idetape_input_buffers (ide_drive_t *drive, idetape_pc_t *pc, unsigne
        int count;
 
        while (bcount) {
-#if IDETAPE_DEBUG_BUGS
                if (bh == NULL) {
                        printk(KERN_ERR "ide-tape: bh == NULL in "
                                "idetape_input_buffers\n");
                        idetape_discard_data(drive, bcount);
                        return;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), bcount);
                HWIF(drive)->atapi_input_bytes(drive, bh->b_data + atomic_read(&bh->b_count), count);
                bcount -= count;
@@ -874,13 +869,11 @@ static void idetape_output_buffers (ide_drive_t *drive, idetape_pc_t *pc, unsign
        int count;
 
        while (bcount) {
-#if IDETAPE_DEBUG_BUGS
                if (bh == NULL) {
                        printk(KERN_ERR "ide-tape: bh == NULL in "
                                "idetape_output_buffers\n");
                        return;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                count = min((unsigned int)pc->b_count, (unsigned int)bcount);
                HWIF(drive)->atapi_output_bytes(drive, pc->b_data, count);
                bcount -= count;
@@ -905,13 +898,11 @@ static void idetape_update_buffers (idetape_pc_t *pc)
        if (test_bit(PC_WRITING, &pc->flags))
                return;
        while (bcount) {
-#if IDETAPE_DEBUG_BUGS
                if (bh == NULL) {
                        printk(KERN_ERR "ide-tape: bh == NULL in "
                                "idetape_update_buffers\n");
                        return;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                count = min((unsigned int)bh->b_size, (unsigned int)bcount);
                atomic_set(&bh->b_count, count);
                if (atomic_read(&bh->b_count) == bh->b_size)
@@ -1065,12 +1056,10 @@ static void idetape_active_next_stage (ide_drive_t *drive)
        if (tape->debug_level >= 4)
                printk(KERN_INFO "ide-tape: Reached idetape_active_next_stage\n");
 #endif /* IDETAPE_DEBUG_LOG */
-#if IDETAPE_DEBUG_BUGS
        if (stage == NULL) {
                printk(KERN_ERR "ide-tape: bug: Trying to activate a non existing stage\n");
                return;
        }
-#endif /* IDETAPE_DEBUG_BUGS */        
 
        rq->rq_disk = tape->disk;
        rq->buffer = NULL;
@@ -1145,28 +1134,24 @@ static void idetape_remove_stage_head (ide_drive_t *drive)
        if (tape->debug_level >= 4)
                printk(KERN_INFO "ide-tape: Reached idetape_remove_stage_head\n");
 #endif /* IDETAPE_DEBUG_LOG */
-#if IDETAPE_DEBUG_BUGS
        if (tape->first_stage == NULL) {
                printk(KERN_ERR "ide-tape: bug: tape->first_stage is NULL\n");
-               return;         
+               return;
        }
        if (tape->active_stage == tape->first_stage) {
                printk(KERN_ERR "ide-tape: bug: Trying to free our active pipeline stage\n");
                return;
        }
-#endif /* IDETAPE_DEBUG_BUGS */
        stage = tape->first_stage;
        tape->first_stage = stage->next;
        idetape_kfree_stage(tape, stage);
        tape->nr_stages--;
        if (tape->first_stage == NULL) {
                tape->last_stage = NULL;
-#if IDETAPE_DEBUG_BUGS
                if (tape->next_stage != NULL)
                        printk(KERN_ERR "ide-tape: bug: tape->next_stage != NULL\n");
                if (tape->nr_stages)
                        printk(KERN_ERR "ide-tape: bug: nr_stages should be 0 now\n");
-#endif /* IDETAPE_DEBUG_BUGS */
        }
 }
 
@@ -1654,13 +1639,11 @@ static ide_startstop_t idetape_issue_packet_command (ide_drive_t *drive, idetape
        int dma_ok = 0;
        u16 bcount;
 
-#if IDETAPE_DEBUG_BUGS
        if (tape->pc->c[0] == IDETAPE_REQUEST_SENSE_CMD &&
            pc->c[0] == IDETAPE_REQUEST_SENSE_CMD) {
                printk(KERN_ERR "ide-tape: possible ide-tape.c bug - "
                        "Two request sense in serial were issued\n");
        }
-#endif /* IDETAPE_DEBUG_BUGS */
 
        if (tape->failed_pc == NULL && pc->c[0] != IDETAPE_REQUEST_SENSE_CMD)
                tape->failed_pc = pc;
@@ -1971,7 +1954,6 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
            tape->pc->c[0] == IDETAPE_REQUEST_SENSE_CMD) {
                return idetape_issue_packet_command(drive, tape->failed_pc);
        }
-#if IDETAPE_DEBUG_BUGS
        if (postponed_rq != NULL)
                if (rq != postponed_rq) {
                        printk(KERN_ERR "ide-tape: ide-tape.c bug - "
@@ -1979,7 +1961,6 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
                        idetape_end_request(drive, 0, 0);
                        return ide_stopped;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
 
        tape->postponed_rq = NULL;
 
@@ -2166,13 +2147,11 @@ static int idetape_copy_stage_from_user (idetape_tape_t *tape, idetape_stage_t *
        int ret = 0;
 
        while (n) {
-#if IDETAPE_DEBUG_BUGS
                if (bh == NULL) {
                        printk(KERN_ERR "ide-tape: bh == NULL in "
                                "idetape_copy_stage_from_user\n");
                        return 1;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                count = min((unsigned int)(bh->b_size - atomic_read(&bh->b_count)), (unsigned int)n);
                if (copy_from_user(bh->b_data + atomic_read(&bh->b_count), buf, count))
                        ret = 1;
@@ -2196,13 +2175,11 @@ static int idetape_copy_stage_to_user (idetape_tape_t *tape, char __user *buf, i
        int ret = 0;
 
        while (n) {
-#if IDETAPE_DEBUG_BUGS
                if (bh == NULL) {
                        printk(KERN_ERR "ide-tape: bh == NULL in "
                                "idetape_copy_stage_to_user\n");
                        return 1;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                count = min(tape->b_count, n);
                if  (copy_to_user(buf, tape->b_data, count))
                        ret = 1;
@@ -2282,12 +2259,10 @@ static void idetape_wait_for_request (ide_drive_t *drive, struct request *rq)
        DECLARE_COMPLETION_ONSTACK(wait);
        idetape_tape_t *tape = drive->driver_data;
 
-#if IDETAPE_DEBUG_BUGS
        if (rq == NULL || !blk_special_request(rq)) {
                printk (KERN_ERR "ide-tape: bug: Trying to sleep on non-valid request\n");
                return;
        }
-#endif /* IDETAPE_DEBUG_BUGS */
        rq->end_io_data = &wait;
        rq->end_io = blk_end_sync_rq;
        spin_unlock_irq(&tape->spinlock);
@@ -2602,12 +2577,10 @@ static int idetape_queue_rw_tail(ide_drive_t *drive, int cmd, int blocks, struct
        if (tape->debug_level >= 2)
                printk(KERN_INFO "ide-tape: idetape_queue_rw_tail: cmd=%d\n",cmd);
 #endif /* IDETAPE_DEBUG_LOG */
-#if IDETAPE_DEBUG_BUGS
        if (idetape_pipeline_active(tape)) {
                printk(KERN_ERR "ide-tape: bug: the pipeline is active in idetape_queue_rw_tail\n");
                return (0);
        }
-#endif /* IDETAPE_DEBUG_BUGS */        
 
        idetape_init_rq(&rq, cmd);
        rq.rq_disk = tape->disk;
@@ -2792,8 +2765,7 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
        idetape_tape_t *tape = drive->driver_data;
        int blocks, min;
        struct idetape_bh *bh;
-       
-#if IDETAPE_DEBUG_BUGS
+
        if (tape->chrdev_direction != idetape_direction_write) {
                printk(KERN_ERR "ide-tape: bug: Trying to empty write pipeline, but we are not writing.\n");
                return;
@@ -2802,7 +2774,6 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
                printk(KERN_ERR "ide-tape: bug: merge_buffer too big\n");
                tape->merge_stage_size = tape->stage_size;
        }
-#endif /* IDETAPE_DEBUG_BUGS */
        if (tape->merge_stage_size) {
                blocks = tape->merge_stage_size / tape->tape_block_size;
                if (tape->merge_stage_size % tape->tape_block_size) {
@@ -2847,7 +2818,6 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
         *       can be totally different on the next backup).
         */
        tape->max_stages = tape->min_pipeline;
-#if IDETAPE_DEBUG_BUGS
        if (tape->first_stage != NULL ||
            tape->next_stage != NULL ||
            tape->last_stage != NULL ||
@@ -2858,7 +2828,6 @@ static void idetape_empty_write_pipeline (ide_drive_t *drive)
                        tape->first_stage, tape->next_stage,
                        tape->last_stage, tape->nr_stages);
        }
-#endif /* IDETAPE_DEBUG_BUGS */
 }
 
 static void idetape_restart_speed_control (ide_drive_t *drive)
@@ -2889,12 +2858,10 @@ static int idetape_initiate_read (ide_drive_t *drive, int max_stages)
                        idetape_empty_write_pipeline(drive);
                        idetape_flush_tape_buffers(drive);
                }
-#if IDETAPE_DEBUG_BUGS
                if (tape->merge_stage || tape->merge_stage_size) {
                        printk (KERN_ERR "ide-tape: merge_stage_size should be 0 now\n");
                        tape->merge_stage_size = 0;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
                        return -ENOMEM;
                tape->chrdev_direction = idetape_direction_read;
@@ -2995,12 +2962,10 @@ static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks)
                tape->pipeline_head++;
                calculate_speeds(drive);
        }
-#if IDETAPE_DEBUG_BUGS
        if (bytes_read > blocks * tape->tape_block_size) {
                printk(KERN_ERR "ide-tape: bug: trying to return more bytes than requested\n");
                bytes_read = blocks * tape->tape_block_size;
        }
-#endif /* IDETAPE_DEBUG_BUGS */
        return (bytes_read);
 }
 
@@ -3299,13 +3264,11 @@ static ssize_t idetape_chrdev_write (struct file *file, const char __user *buf,
        if (tape->chrdev_direction != idetape_direction_write) {
                if (tape->chrdev_direction == idetape_direction_read)
                        idetape_discard_read_pipeline(drive, 1);
-#if IDETAPE_DEBUG_BUGS
                if (tape->merge_stage || tape->merge_stage_size) {
                        printk(KERN_ERR "ide-tape: merge_stage_size "
                                "should be 0 now\n");
                        tape->merge_stage_size = 0;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                if ((tape->merge_stage = __idetape_kmalloc_stage(tape, 0, 0)) == NULL)
                        return -ENOMEM;
                tape->chrdev_direction = idetape_direction_write;
@@ -3333,12 +3296,10 @@ static ssize_t idetape_chrdev_write (struct file *file, const char __user *buf,
        if (tape->restart_speed_control_req)
                idetape_restart_speed_control(drive);
        if (tape->merge_stage_size) {
-#if IDETAPE_DEBUG_BUGS
                if (tape->merge_stage_size >= tape->stage_size) {
                        printk(KERN_ERR "ide-tape: bug: merge buffer too big\n");
                        tape->merge_stage_size = 0;
                }
-#endif /* IDETAPE_DEBUG_BUGS */
                actually_written = min((unsigned int)(tape->stage_size - tape->merge_stage_size), (unsigned int)count);
                if (idetape_copy_stage_from_user(tape, tape->merge_stage, buf, actually_written))
                                ret = -EFAULT;