[PATCH 2/2] ide-tape: remove atomic test/set macros for packet commands

From: Borislav Petkov
Date: Sat Feb 09 2008 - 14:33:48 EST

Removing the atomic tests for pc's is unobjectionable. Since this driver will
probably go to /dev/null soon, the atomic tests for tape->flags are left in
place for there are some situations where they're needed (chrdev DSC handling,
low level pipeline operation and so on). While at it, rename all test/set flag
bit defines explicitly to *_FLAG_* for clarity.

Signed-off-by: Borislav Petkov <petkovbb@xxxxxxxxx>
---
drivers/ide/ide-tape.c | 208 +++++++++++++++++++++++++-----------------------
1 files changed, 109 insertions(+), 99 deletions(-)

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 1fff560..09ff9b0 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -209,44 +209,47 @@ typedef struct idetape_packet_command_s {
unsigned long flags;
} idetape_pc_t;

-/*
- * Packet command flag bits.
- */
-/* Set when an error is considered normal - We won't retry */
-#define PC_ABORT 0
-/* 1 When polling for DSC on a media access command */
-#define PC_WAIT_FOR_DSC 1
-/* 1 when we prefer to use DMA if possible */
-#define PC_DMA_RECOMMENDED 2
-/* 1 while DMA in progress */
-#define PC_DMA_IN_PROGRESS 3
-/* 1 when encountered problem during DMA */
-#define PC_DMA_ERROR 4
-/* Data direction */
-#define PC_WRITING 5
+/* Packet command flag bits. */
+enum {
+ /* Set when an error is considered normal - We won't retry */
+ PC_FLAG_ABORT = (1 << 0),
+ /* 1 When polling for DSC on a media access command */
+ PC_FLAG_WAIT_FOR_DSC = (1 << 1),
+ /* 1 when we prefer to use DMA if possible */
+ PC_FLAG_DMA_RECOMMENDED = (1 << 2),
+ /* 1 while DMA in progress */
+ PC_FLAG_DMA_IN_PROGRESS = (1 << 3),
+ /* 1 when encountered problem during DMA */
+ PC_FLAG_DMA_ERROR = (1 << 4),
+ /* Data direction */
+ PC_FLAG_WRITING = (1 << 5),
+};

/* Tape door status */
#define DOOR_UNLOCKED 0
#define DOOR_LOCKED 1
#define DOOR_EXPLICITLY_LOCKED 2

-/*
- * Tape flag bits values.
- */
-#define IDETAPE_IGNORE_DSC 0
-/* 0 When the tape position is unknown */
-#define IDETAPE_ADDRESS_VALID 1
-#define IDETAPE_BUSY 2 /* Device already opened */
-/* Error detected in a pipeline stage */
-#define IDETAPE_PIPELINE_ERROR 3
-/* Attempt to auto-detect the current user block size */
-#define IDETAPE_DETECT_BS 4
-#define IDETAPE_FILEMARK 5 /* Currently on a filemark */
-#define IDETAPE_DRQ_INTERRUPT 6 /* DRQ interrupt device */
-#define IDETAPE_READ_ERROR 7
-#define IDETAPE_PIPELINE_ACTIVE 8 /* pipeline active */
-/* 0 = no tape is loaded, so we don't rewind after ejecting */
-#define IDETAPE_MEDIUM_PRESENT 9
+/* Tape flag bits values. */
+enum {
+ IDETAPE_FLAG_IGNORE_DSC = (1 << 0),
+ /* 0 When the tape position is unknown */
+ IDETAPE_FLAG_ADDRESS_VALID = (1 << 1),
+ /* Device already opened */
+ IDETAPE_FLAG_BUSY = (1 << 2),
+ /* Error detected in a pipeline stage */
+ IDETAPE_FLAG_PIPELINE_ERR = (1 << 3),
+ /* Attempt to auto-detect the current user block size */
+ IDETAPE_FLAG_DETECT_BS = (1 << 4),
+ /* Currently on a filemark */
+ IDETAPE_FLAG_FILEMARK = (1 << 5),
+ /* DRQ interrupt device */
+ IDETAPE_FLAG_DRQ_INTERRUPT = (1 << 6),
+ /* pipeline active */
+ IDETAPE_FLAG_PIPELINE_ACTIVE = (1 << 7),
+ /* 0 = no tape is loaded, so we don't rewind after ejecting */
+ IDETAPE_FLAG_MEDIUM_PRESENT = (1 << 8),
+};

/* Some defines for the SPACE command */
#define IDETAPE_SPACE_OVER_FILEMARK 1
@@ -584,7 +587,7 @@ static void idetape_update_buffers(idetape_pc_t *pc)
int count;
unsigned int bcount = pc->actually_transferred;

- if (test_bit(PC_WRITING, &pc->flags))
+ if (pc->flags & PC_FLAG_WRITING)
return;
while (bcount) {
if (bh == NULL) {
@@ -671,7 +674,7 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
pc->c[0], tape->sense_key, tape->asc, tape->ascq);

/* Correct pc->actually_transferred by asking the tape. */
- if (test_bit(PC_DMA_ERROR, &pc->flags)) {
+ if (pc->flags & PC_FLAG_DMA_ERROR) {
pc->actually_transferred = pc->request_transfer -
tape->blk_size *
be32_to_cpu(get_unaligned((u32 *)&sense[3]));
@@ -690,26 +693,26 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
/* don't report an error, everything's ok */
pc->error = 0;
/* don't retry read/write */
- set_bit(PC_ABORT, &pc->flags);
+ pc->flags |= PC_FLAG_ABORT;
}
}
if (pc->c[0] == READ_6 && (sense[2] & 0x80)) {
pc->error = IDETAPE_ERROR_FILEMARK;
- set_bit(PC_ABORT, &pc->flags);
+ pc->flags |= PC_FLAG_ABORT;
}
if (pc->c[0] == WRITE_6) {
if ((sense[2] & 0x40) || (tape->sense_key == 0xd
&& tape->asc == 0x0 && tape->ascq == 0x2)) {
pc->error = IDETAPE_ERROR_EOD;
- set_bit(PC_ABORT, &pc->flags);
+ pc->flags |= PC_FLAG_ABORT;
}
}
if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {
if (tape->sense_key == 8) {
pc->error = IDETAPE_ERROR_EOD;
- set_bit(PC_ABORT, &pc->flags);
+ pc->flags |= PC_FLAG_ABORT;
}
- if (!test_bit(PC_ABORT, &pc->flags) &&
+ if (!(pc->flags & PC_FLAG_ABORT) &&
pc->actually_transferred)
pc->retries = IDETAPE_MAX_PC_RETRIES + 1;
}
@@ -865,14 +868,16 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
if (rq->cmd[0] & REQ_IDETAPE_WRITE) {
remove_stage = 1;
if (error) {
- set_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
+ set_bit(IDETAPE_FLAG_PIPELINE_ERR,
+ &tape->flags);
if (error == IDETAPE_ERROR_EOD)
idetape_abort_pipeline(drive,
active_stage);
}
} else if (rq->cmd[0] & REQ_IDETAPE_READ) {
if (error == IDETAPE_ERROR_EOD) {
- set_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
+ set_bit(IDETAPE_FLAG_PIPELINE_ERR,
+ &tape->flags);
idetape_abort_pipeline(drive, active_stage);
}
}
@@ -905,7 +910,7 @@ static int idetape_end_request(ide_drive_t *drive, int uptodate, int nr_sects)
if (remove_stage)
idetape_remove_stage_head(drive);
if (tape->active_data_rq == NULL)
- clear_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
+ clear_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
spin_unlock_irqrestore(&tape->lock, flags);
return 0;
}
@@ -984,7 +989,7 @@ static ide_startstop_t idetape_retry_pc (ide_drive_t *drive)
pc = idetape_next_pc_storage(drive);
rq = idetape_next_rq_storage(drive);
idetape_create_request_sense_cmd(pc);
- set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
+ set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
idetape_queue_pc_head(drive, pc, rq);
return ide_stopped;
}
@@ -1031,7 +1036,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
/* Clear the interrupt */
stat = ide_read_status(drive);

- if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
+ if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
if (hwif->ide_dma_end(drive) || (stat & ERR_STAT)) {
/*
* A DMA error is sometimes expected. For example,
@@ -1054,7 +1059,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
* data transfer will occur, but no DMA error.
* (AS, 19 Apr 2001)
*/
- set_bit(PC_DMA_ERROR, &pc->flags);
+ pc->flags |= PC_FLAG_DMA_ERROR;
} else {
pc->actually_transferred = pc->request_transfer;
idetape_update_buffers(pc);
@@ -1068,7 +1073,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
debug_log(DBG_SENSE, "Packet command completed, %d bytes"
" transferred\n", pc->actually_transferred);

- clear_bit(PC_DMA_IN_PROGRESS, &pc->flags);
+ pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
local_irq_enable();

#if SIMULATE_ERRORS
@@ -1081,7 +1086,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
#endif
if ((stat & ERR_STAT) && pc->c[0] == REQUEST_SENSE)
stat &= ~ERR_STAT;
- if ((stat & ERR_STAT) || test_bit(PC_DMA_ERROR, &pc->flags)) {
+ if ((stat & ERR_STAT) || (pc->flags & PC_FLAG_DMA_ERROR)) {
/* Error detected */
debug_log(DBG_ERR, "%s: I/O error\n", tape->name);

@@ -1097,7 +1102,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
return idetape_retry_pc(drive);
}
pc->error = 0;
- if (test_bit(PC_WAIT_FOR_DSC, &pc->flags) &&
+ if ((pc->flags & PC_FLAG_WAIT_FOR_DSC) &&
(stat & SEEK_STAT) == 0) {
/* Media access command */
tape->dsc_polling_start = jiffies;
@@ -1112,7 +1117,9 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
/* Command finished - Call the callback function */
return pc->callback(drive);
}
- if (test_and_clear_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
+
+ if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
+ pc->flags &= ~PC_FLAG_DMA_IN_PROGRESS;
printk(KERN_ERR "ide-tape: The tape wants to issue more "
"interrupts in DMA mode\n");
printk(KERN_ERR "ide-tape: DMA disabled, reverting to PIO\n");
@@ -1129,7 +1136,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
printk(KERN_ERR "ide-tape: CoD != 0 in %s\n", __func__);
return ide_do_reset(drive);
}
- if (((ireason & IO) == IO) == test_bit(PC_WRITING, &pc->flags)) {
+ if (((ireason & IO) == IO) == !!(pc->flags & PC_FLAG_WRITING)) {
/* Hopefully, we will never get here */
printk(KERN_ERR "ide-tape: We wanted to %s, ",
(ireason & IO) ? "Write" : "Read");
@@ -1137,7 +1144,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
(ireason & IO) ? "Read" : "Write");
return ide_do_reset(drive);
}
- if (!test_bit(PC_WRITING, &pc->flags)) {
+ if (!(pc->flags & PC_FLAG_WRITING)) {
/* Reading - Check that we have enough space */
temp = pc->actually_transferred + bcount;
if (temp > pc->request_transfer) {
@@ -1249,7 +1256,7 @@ static ide_startstop_t idetape_transfer_pc(ide_drive_t *drive)
ide_set_handler(drive, &idetape_pc_intr, IDETAPE_WAIT_CMD, NULL);
#ifdef CONFIG_BLK_DEV_IDEDMA
/* Begin DMA, if necessary */
- if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags))
+ if (pc->flags & PC_FLAG_DMA_IN_PROGRESS)
hwif->dma_start(drive);
#endif
/* Send the actual packet */
@@ -1276,13 +1283,13 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, idetape_pc_t *pc)
tape->pc = pc;

if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
- test_bit(PC_ABORT, &pc->flags)) {
+ (pc->flags & PC_FLAG_ABORT)) {
/*
* We will "abort" retrying a packet command in case legitimate
* error code was received (crossing a filemark, or end of the
* media, for example).
*/
- if (!test_bit(PC_ABORT, &pc->flags)) {
+ if (!(pc->flags & PC_FLAG_ABORT)) {
if (!(pc->c[0] == TEST_UNIT_READY &&
tape->sense_key == 2 && tape->asc == 4 &&
(tape->ascq == 1 || tape->ascq == 8))) {
@@ -1308,20 +1315,22 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, idetape_pc_t *pc)
/* Request to transfer the entire buffer at once */
bcount = pc->request_transfer;

- if (test_and_clear_bit(PC_DMA_ERROR, &pc->flags)) {
+ if (pc->flags & PC_FLAG_DMA_ERROR) {
+ pc->flags &= ~PC_FLAG_DMA_ERROR;
printk(KERN_WARNING "ide-tape: DMA disabled, "
"reverting to PIO\n");
ide_dma_off(drive);
}
- if (test_bit(PC_DMA_RECOMMENDED, &pc->flags) && drive->using_dma)
+ if ((pc->flags & PC_FLAG_DMA_RECOMMENDED) && drive->using_dma)
dma_ok = !hwif->dma_setup(drive);

ide_pktcmd_tf_load(drive, IDE_TFLAG_NO_SELECT_MASK |
IDE_TFLAG_OUT_DEVICE, bcount, dma_ok);

- if (dma_ok) /* Will begin DMA later */
- set_bit(PC_DMA_IN_PROGRESS, &pc->flags);
- if (test_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags)) {
+ if (dma_ok)
+ /* Will begin DMA later */
+ pc->flags |= PC_FLAG_DMA_IN_PROGRESS;
+ if (test_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags)) {
ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc,
IDETAPE_WAIT_CMD, NULL);
return ide_started;
@@ -1509,7 +1518,7 @@ static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
pc->buffer_size = length * tape->blk_size;
pc->request_transfer = pc->buffer_size;
if (pc->request_transfer == tape->stage_size)
- set_bit(PC_DMA_RECOMMENDED, &pc->flags);
+ pc->flags |= PC_FLAG_DMA_RECOMMENDED;
}

static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
@@ -1520,7 +1529,7 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);
pc->c[1] = 1;
pc->callback = &idetape_rw_callback;
- set_bit(PC_WRITING, &pc->flags);
+ pc->flags |= PC_FLAG_WRITING;
pc->bh = bh;
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
@@ -1528,7 +1537,7 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc,
pc->buffer_size = length * tape->blk_size;
pc->request_transfer = pc->buffer_size;
if (pc->request_transfer == tape->stage_size)
- set_bit(PC_DMA_RECOMMENDED, &pc->flags);
+ pc->flags |= PC_FLAG_DMA_RECOMMENDED;
}

static ide_startstop_t idetape_do_request(ide_drive_t *drive,
@@ -1572,10 +1581,10 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
stat = ide_read_status(drive);

if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2))
- set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
+ set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);

if (drive->post_reset == 1) {
- set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
+ set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
drive->post_reset = 0;
}

@@ -1583,7 +1592,7 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
tape->insert_speed = tape->insert_size / 1024 * HZ /
(jiffies - tape->insert_time);
idetape_calculate_speeds(drive);
- if (!test_and_clear_bit(IDETAPE_IGNORE_DSC, &tape->flags) &&
+ if (!test_and_clear_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags) &&
(stat & SEEK_STAT) == 0) {
if (postponed_rq == NULL) {
tape->dsc_polling_start = jiffies;
@@ -1641,7 +1650,7 @@ static inline int idetape_pipeline_active(idetape_tape_t *tape)
{
int rc1, rc2;

- rc1 = test_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
+ rc1 = test_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
rc2 = (tape->active_data_rq != NULL);
return rc1;
}
@@ -1887,7 +1896,7 @@ static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive)
if (readpos[0] & 0x4) {
printk(KERN_INFO "ide-tape: Block location is unknown"
"to the tape\n");
- clear_bit(IDETAPE_ADDRESS_VALID, &tape->flags);
+ clear_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
idetape_end_request(drive, 0, 0);
} else {
debug_log(DBG_SENSE, "Block Location - %u\n",
@@ -1896,7 +1905,7 @@ static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive)
tape->partition = readpos[1];
tape->first_frame =
be32_to_cpu(*(u32 *)&readpos[4]);
- set_bit(IDETAPE_ADDRESS_VALID, &tape->flags);
+ set_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags);
idetape_end_request(drive, 1, 0);
}
} else {
@@ -1915,7 +1924,7 @@ static void idetape_create_write_filemark_cmd(ide_drive_t *drive,
idetape_init_pc(pc);
pc->c[0] = WRITE_FILEMARKS;
pc->c[4] = write_filemark;
- set_bit(PC_WAIT_FOR_DSC, &pc->flags);
+ pc->flags |= PC_FLAG_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -1956,7 +1965,7 @@ static void idetape_create_load_unload_cmd(ide_drive_t *drive, idetape_pc_t *pc,
idetape_init_pc(pc);
pc->c[0] = START_STOP;
pc->c[4] = cmd;
- set_bit(PC_WAIT_FOR_DSC, &pc->flags);
+ pc->flags |= PC_FLAG_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -1967,7 +1976,7 @@ static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout)
int load_attempted = 0;

/* Wait for the tape to become ready */
- set_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags);
+ set_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags);
timeout += jiffies;
while (time_before(jiffies, timeout)) {
idetape_create_test_unit_ready_cmd(&pc);
@@ -2040,7 +2049,7 @@ static void idetape_create_locate_cmd(ide_drive_t *drive, idetape_pc_t *pc,
pc->c[1] = 2;
put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]);
pc->c[8] = partition;
- set_bit(PC_WAIT_FOR_DSC, &pc->flags);
+ pc->flags |= PC_FLAG_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2071,7 +2080,7 @@ static int __idetape_discard_read_pipeline(ide_drive_t *drive)

/* Remove merge stage. */
cnt = tape->merge_stage_size / tape->blk_size;
- if (test_and_clear_bit(IDETAPE_FILEMARK, &tape->flags))
+ if (test_and_clear_bit(IDETAPE_FLAG_FILEMARK, &tape->flags))
++cnt; /* Filemarks count as 1 sector */
tape->merge_stage_size = 0;
if (tape->merge_stage != NULL) {
@@ -2080,7 +2089,7 @@ static int __idetape_discard_read_pipeline(ide_drive_t *drive)
}

/* Clear pipeline flags. */
- clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
+ clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags);
tape->chrdev_dir = IDETAPE_DIR_NONE;

/* Remove pipeline stages. */
@@ -2194,7 +2203,7 @@ static void idetape_plug_pipeline(ide_drive_t *drive)
if (tape->next_stage == NULL)
return;
if (!idetape_pipeline_active(tape)) {
- set_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
+ set_bit(IDETAPE_FLAG_PIPELINE_ACTIVE, &tape->flags);
idetape_activate_next_stage(drive);
(void) ide_do_drive_cmd(drive, tape->active_data_rq, ide_end);
}
@@ -2213,7 +2222,7 @@ static void idetape_create_rewind_cmd(ide_drive_t *drive, idetape_pc_t *pc)
{
idetape_init_pc(pc);
pc->c[0] = REZERO_UNIT;
- set_bit(PC_WAIT_FOR_DSC, &pc->flags);
+ pc->flags |= PC_FLAG_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2222,7 +2231,7 @@ static void idetape_create_erase_cmd(idetape_pc_t *pc)
idetape_init_pc(pc);
pc->c[0] = ERASE;
pc->c[1] = 1;
- set_bit(PC_WAIT_FOR_DSC, &pc->flags);
+ pc->flags |= PC_FLAG_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2232,7 +2241,7 @@ static void idetape_create_space_cmd(idetape_pc_t *pc, int count, u8 cmd)
pc->c[0] = SPACE;
put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]);
pc->c[1] = cmd;
- set_bit(PC_WAIT_FOR_DSC, &pc->flags);
+ pc->flags |= PC_FLAG_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2319,7 +2328,7 @@ static int idetape_add_chrdev_write_request(ide_drive_t *drive, int blocks)
idetape_plug_pipeline(drive);
}
}
- if (test_and_clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags))
+ if (test_and_clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags))
/* Return a deferred error */
return -EIO;
return blocks;
@@ -2395,7 +2404,7 @@ static void idetape_empty_write_pipeline(ide_drive_t *drive)
__idetape_kfree_stage(tape->merge_stage);
tape->merge_stage = NULL;
}
- clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
+ clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags);
tape->chrdev_dir = IDETAPE_DIR_NONE;

/*
@@ -2483,7 +2492,7 @@ static int idetape_init_read(ide_drive_t *drive, int max_stages)
rq.sector = tape->first_frame;
rq.nr_sectors = blocks;
rq.current_nr_sectors = blocks;
- if (!test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags) &&
+ if (!test_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags) &&
tape->nr_stages < max_stages) {
new_stage = idetape_kmalloc_stage(tape);
while (new_stage != NULL) {
@@ -2520,13 +2529,13 @@ static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks)
debug_log(DBG_PROCS, "Enter %s, %d blocks\n", __func__, blocks);

/* If we are at a filemark, return a read length of 0 */
- if (test_bit(IDETAPE_FILEMARK, &tape->flags))
+ if (test_bit(IDETAPE_FLAG_FILEMARK, &tape->flags))
return 0;

/* Wait for the next block to reach the head of the pipeline. */
idetape_init_read(drive, tape->max_stages);
if (tape->first_stage == NULL) {
- if (test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags))
+ if (test_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags))
return 0;
return idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, blocks,
tape->merge_stage->bh);
@@ -2543,7 +2552,7 @@ static int idetape_add_chrdev_read_request(ide_drive_t *drive, int blocks)
else {
idetape_switch_buffers(tape, tape->first_stage);
if (rq_ptr->errors == IDETAPE_ERROR_FILEMARK)
- set_bit(IDETAPE_FILEMARK, &tape->flags);
+ set_bit(IDETAPE_FLAG_FILEMARK, &tape->flags);
spin_lock_irqsave(&tape->lock, flags);
idetape_remove_stage_head(drive);
spin_unlock_irqrestore(&tape->lock, flags);
@@ -2690,12 +2699,13 @@ static int idetape_space_over_filemarks(ide_drive_t *drive, short mt_op,
if (tape->chrdev_dir == IDETAPE_DIR_READ) {
/* its a read-ahead buffer, scan it for crossed filemarks. */
tape->merge_stage_size = 0;
- if (test_and_clear_bit(IDETAPE_FILEMARK, &tape->flags))
+ if (test_and_clear_bit(IDETAPE_FLAG_FILEMARK, &tape->flags))
++count;
while (tape->first_stage != NULL) {
if (count == mt_count) {
if (mt_op == MTFSFM)
- set_bit(IDETAPE_FILEMARK, &tape->flags);
+ set_bit(IDETAPE_FLAG_FILEMARK,
+ &tape->flags);
return 0;
}
spin_lock_irqsave(&tape->lock, flags);
@@ -2779,7 +2789,7 @@ static ssize_t idetape_chrdev_read(struct file *file, char __user *buf,
debug_log(DBG_CHRDEV, "Enter %s, count %Zd\n", __func__, count);

if (tape->chrdev_dir != IDETAPE_DIR_READ) {
- if (test_bit(IDETAPE_DETECT_BS, &tape->flags))
+ if (test_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags))
if (count > tape->blk_size &&
(count % tape->blk_size) == 0)
tape->user_bs_factor = count / tape->blk_size;
@@ -2822,7 +2832,7 @@ static ssize_t idetape_chrdev_read(struct file *file, char __user *buf,
tape->merge_stage_size = bytes_read-temp;
}
finish:
- if (!actually_read && test_bit(IDETAPE_FILEMARK, &tape->flags)) {
+ if (!actually_read && test_bit(IDETAPE_FLAG_FILEMARK, &tape->flags)) {
debug_log(DBG_SENSE, "%s: spacing over filemark\n", tape->name);

idetape_space_over_filemarks(drive, MTFSF, 1);
@@ -3015,7 +3025,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
!IDETAPE_LU_LOAD_MASK);
retval = idetape_queue_pc_tail(drive, &pc);
if (!retval)
- clear_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags);
+ clear_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags);
return retval;
case MTNOP:
idetape_discard_read_pipeline(drive, 0);
@@ -3038,9 +3048,9 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
mt_count % tape->blk_size)
return -EIO;
tape->user_bs_factor = mt_count / tape->blk_size;
- clear_bit(IDETAPE_DETECT_BS, &tape->flags);
+ clear_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags);
} else
- set_bit(IDETAPE_DETECT_BS, &tape->flags);
+ set_bit(IDETAPE_FLAG_DETECT_BS, &tape->flags);
return 0;
case MTSEEK:
idetape_discard_read_pipeline(drive, 0);
@@ -3188,24 +3198,24 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp)

filp->private_data = tape;

- if (test_and_set_bit(IDETAPE_BUSY, &tape->flags)) {
+ if (test_and_set_bit(IDETAPE_FLAG_BUSY, &tape->flags)) {
retval = -EBUSY;
goto out_put_tape;
}

retval = idetape_wait_ready(drive, 60 * HZ);
if (retval) {
- clear_bit(IDETAPE_BUSY, &tape->flags);
+ clear_bit(IDETAPE_FLAG_BUSY, &tape->flags);
printk(KERN_ERR "ide-tape: %s: drive not ready\n", tape->name);
goto out_put_tape;
}

idetape_read_position(drive);
- if (!test_bit(IDETAPE_ADDRESS_VALID, &tape->flags))
+ if (!test_bit(IDETAPE_FLAG_ADDRESS_VALID, &tape->flags))
(void)idetape_rewind_tape(drive);

if (tape->chrdev_dir != IDETAPE_DIR_READ)
- clear_bit(IDETAPE_PIPELINE_ERROR, &tape->flags);
+ clear_bit(IDETAPE_FLAG_PIPELINE_ERR, &tape->flags);

/* Read block size and write protect status from drive. */
ide_tape_get_bsize_from_bdesc(drive);
@@ -3220,7 +3230,7 @@ static int idetape_chrdev_open(struct inode *inode, struct file *filp)
if (tape->write_prot) {
if ((filp->f_flags & O_ACCMODE) == O_WRONLY ||
(filp->f_flags & O_ACCMODE) == O_RDWR) {
- clear_bit(IDETAPE_BUSY, &tape->flags);
+ clear_bit(IDETAPE_FLAG_BUSY, &tape->flags);
retval = -EROFS;
goto out_put_tape;
}
@@ -3285,7 +3295,7 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp)
__idetape_kfree_stage(tape->cache_stage);
tape->cache_stage = NULL;
}
- if (minor < 128 && test_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags))
+ if (minor < 128 && test_bit(IDETAPE_FLAG_MEDIUM_PRESENT, &tape->flags))
(void) idetape_rewind_tape(drive);
if (tape->chrdev_dir == IDETAPE_DIR_NONE) {
if (tape->door_locked == DOOR_LOCKED) {
@@ -3295,7 +3305,7 @@ static int idetape_chrdev_release(struct inode *inode, struct file *filp)
}
}
}
- clear_bit(IDETAPE_BUSY, &tape->flags);
+ clear_bit(IDETAPE_FLAG_BUSY, &tape->flags);
ide_tape_put(tape);
unlock_kernel();
return 0;
@@ -3499,7 +3509,7 @@ static void idetape_setup(ide_drive_t *drive, idetape_tape_t *tape, int minor)

/* Command packet DRQ type */
if (((gcw[0] & 0x60) >> 5) == 1)
- set_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags);
+ set_bit(IDETAPE_FLAG_DRQ_INTERRUPT, &tape->flags);

tape->min_pipeline = 10;
tape->max_pipeline = 10;
--
1.5.3.7

--
Regards/Gruß,
Boris.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/