[PATCH 11/22] ide-tape: remove atomic test/set macros

From: Borislav Petkov
Date: Mon Feb 04 2008 - 08:46:50 EST

Also remove flag IDETAPE_READ_ERROR since it is unused.

Signed-off-by: Borislav Petkov <petkovbb@xxxxxxxxx>
---
drivers/ide/ide-tape.c | 226 +++++++++++++++++++++++++----------------------
1 files changed, 120 insertions(+), 106 deletions(-)

diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index 4fee160..1c4f94c 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -207,24 +207,24 @@ typedef struct idetape_packet_command_s {
u8 *current_position; /* Pointer into the above buffer */
ide_startstop_t (*callback) (ide_drive_t *); /* Called when this packet command is completed */
u8 pc_buffer[IDETAPE_PC_BUFFER_SIZE]; /* Temporary buffer */
- unsigned long flags; /* Status/Action bit flags: long for set_bit */
+ unsigned int 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_FL_ABORT = (1 << 0),
+ /* 1 When polling for DSC on a media access command */
+ PC_FL_WAIT_FOR_DSC = (1 << 1),
+ /* 1 when we prefer to use DMA if possible */
+ PC_FL_DMA_RECOMMENDED = (1 << 2),
+ /* 1 while DMA in progress */
+ PC_FL_DMA_IN_PROGRESS = (1 << 3),
+ /* 1 when encountered problem during DMA */
+ PC_FL_DMA_ERROR = (1 << 4),
+ /* Data direction */
+ PC_FL_WRITING = (1 << 5),
+};

/*
* A pipeline stage.
@@ -354,8 +354,7 @@ typedef struct ide_tape_obj {
/* Wasted space in each stage */
int excess_bh_size;

- /* Status/Action flags: long for set_bit */
- unsigned long flags;
+ unsigned int flags;
/* protects the ide-tape queue */
spinlock_t lock;

@@ -458,20 +457,26 @@ static void ide_tape_put(struct ide_tape_obj *tape)
#define DOOR_LOCKED 1
#define DOOR_EXPLICITLY_LOCKED 2

-/*
- * Tape flag bits values.
- */
-#define IDETAPE_IGNORE_DSC 0
-#define IDETAPE_ADDRESS_VALID 1 /* 0 When the tape position is unknown */
-#define IDETAPE_BUSY 2 /* Device already opened */
-#define IDETAPE_PIPELINE_ERROR 3 /* Error detected in a pipeline stage */
-#define IDETAPE_DETECT_BS 4 /* Attempt to auto-detect the current user block size */
-#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_FL_IGNORE_DSC = (1 << 0),
+ /* 0 When the tape position is unknown */
+ IDETAPE_FL_ADDRESS_VALID = (1 << 1),
+ /* Device already opened */
+ IDETAPE_FL_BUSY = (1 << 2),
+ /* Error detected in a pipeline stage */
+ IDETAPE_FL_PIPELINE_ERR = (1 << 3),
+ /* Attempt to auto-detect the current user block size */
+ IDETAPE_FL_DETECT_BS = (1 << 4),
+ /* Currently on a filemark */
+ IDETAPE_FL_FILEMARK = (1 << 5),
+ /* DRQ interrupt device */
+ IDETAPE_FL_DRQ_INTERRUPT = (1 << 6),
+ /* pipeline active */
+ IDETAPE_FL_PIPELINE_ACTIVE = (1 << 7),
+ /* 0 = no tape is loaded, so we don't rewind after ejecting */
+ IDETAPE_FL_MEDIUM_PRESENT = (1 << 8),
+};

/*
* Some defines for the READ BUFFER command
@@ -627,7 +632,7 @@ 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_FL_WRITING)
return;
while (bcount) {
if (bh == NULL) {
@@ -703,8 +708,8 @@ static void idetape_analyze_error(ide_drive_t *drive, u8 *sense)
debug_log(DBG_ERR, "pc = %x, sense key = %x, asc = %x, ascq = %x\n",
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)) {
+ /* Correct pc->actually_transferred by asking the tape. */
+ if (pc->flags & PC_FL_DMA_ERROR) {
pc->actually_transferred = pc->request_transfer -
tape->blk_size *
be32_to_cpu(get_unaligned((u32 *)&sense[3]));
@@ -723,27 +728,26 @@ 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_FL_ABORT;
}
}
if (pc->c[0] == READ_6 && (sense[2] & 0x80)) {
pc->error = IDETAPE_ERROR_FILEMARK;
- set_bit(PC_ABORT, &pc->flags);
+ pc->flags |= PC_FL_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_FL_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_FL_ABORT;
}
- if (!test_bit(PC_ABORT, &pc->flags) &&
- pc->actually_transferred)
+ if (!(pc->flags & PC_FL_ABORT) && pc->actually_transferred)
pc->retries = IDETAPE_MAX_PC_RETRIES + 1;
}
}
@@ -899,13 +903,13 @@ 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);
+ tape->flags |= IDETAPE_FL_PIPELINE_ERR;
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);
+ tape->flags |= IDETAPE_FL_PIPELINE_ERR;
idetape_abort_pipeline(drive, active_stage);
}
}
@@ -943,7 +947,7 @@ 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);
+ tape->flags &= ~IDETAPE_FL_PIPELINE_ACTIVE;
spin_unlock_irqrestore(&tape->lock, flags);
return 0;
}
@@ -1028,7 +1032,7 @@ static ide_startstop_t idetape_retry_pc(ide_drive_t *drive)
}

idetape_create_request_sense_cmd(pc);
- set_bit(IDETAPE_IGNORE_DSC, &tape->flags);
+ tape->flags |= IDETAPE_FL_IGNORE_DSC;
idetape_queue_pc_head(drive, pc, rq);
return ide_stopped;
}
@@ -1077,7 +1081,7 @@ static ide_startstop_t idetape_pc_intr(ide_drive_t *drive)
/* Clear the interrupt */
stat = hwif->INB(IDE_STATUS_REG);

- if (test_bit(PC_DMA_IN_PROGRESS, &pc->flags)) {
+ if (pc->flags & PC_FL_DMA_IN_PROGRESS) {
if (hwif->ide_dma_end(drive) || (stat & ERR_STAT)) {
/*
* A DMA error is sometimes expected. For example,
@@ -1100,7 +1104,7 @@ 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_FL_DMA_ERROR;
} else {
pc->actually_transferred = pc->request_transfer;
idetape_update_buffers(pc);
@@ -1114,7 +1118,7 @@ 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_FL_DMA_IN_PROGRESS;
local_irq_enable();

#if SIMULATE_ERRORS
@@ -1127,7 +1131,7 @@ 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_FL_DMA_ERROR)) {
/* Error detected */
debug_log(DBG_ERR, "%s: I/O error\n", tape->name);

@@ -1143,8 +1147,8 @@ 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) &&
- (stat & SEEK_STAT) == 0) {
+ if ((pc->flags & PC_FL_WAIT_FOR_DSC) &&
+ (stat & SEEK_STAT) == 0) {
/* Media access command */
tape->dsc_polling_start = jiffies;
tape->dsc_poll_freq = IDETAPE_DSC_MA_FAST;
@@ -1158,7 +1162,8 @@ 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_FL_DMA_IN_PROGRESS) {
+ pc->flags &= ~PC_FL_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");
@@ -1175,7 +1180,7 @@ 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_FL_WRITING)) {
/* Hopefully, we will never get here */
printk(KERN_ERR "ide-tape: We wanted to %s, ",
(ireason & IO) ? "Write" : "Read");
@@ -1183,7 +1188,7 @@ 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_FL_WRITING)) {
/* Reading - Check that we have enough space */
temp = pc->actually_transferred + bcount;
if (temp > pc->request_transfer) {
@@ -1300,7 +1305,7 @@ 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_FL_DMA_IN_PROGRESS)
hwif->dma_start(drive);
#endif
/* Send the actual packet */
@@ -1326,14 +1331,13 @@ static ide_startstop_t idetape_issue_pc(ide_drive_t *drive, idetape_pc_t *pc)
/* Set the current packet command */
tape->pc = pc;

- if (pc->retries > IDETAPE_MAX_PC_RETRIES ||
- test_bit(PC_ABORT, &pc->flags)) {
+ if (pc->retries > IDETAPE_MAX_PC_RETRIES || (pc->flags & PC_FL_ABORT)) {
/*
* We will "abort" retrying a packet command in case
* a 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_FL_ABORT)) {
if (!(pc->c[0] == TEST_UNIT_READY &&
tape->sense_key == 2 && tape->asc == 4 &&
(tape->ascq == 1 || tape->ascq == 8))) {
@@ -1359,20 +1363,21 @@ 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_FL_DMA_ERROR) {
+ pc->flags &= ~PC_FL_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_FL_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)) {
+ pc->flags |= PC_FL_DMA_IN_PROGRESS;
+ if (tape->flags & IDETAPE_FL_DRQ_INTERRUPT) {
ide_execute_command(drive, WIN_PACKETCMD, &idetape_transfer_pc,
IDETAPE_WAIT_CMD, NULL);
return ide_started;
@@ -1542,7 +1547,7 @@ static void idetape_create_read_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsi
pc->buffer_size = length * tape->blk_size;
pc->request_transfer = length * tape->blk_size;
if (pc->request_transfer == tape->stage_size)
- set_bit(PC_DMA_RECOMMENDED, &pc->flags);
+ pc->flags |= PC_FL_DMA_RECOMMENDED;
}

static void idetape_create_read_buffer_cmd(idetape_tape_t *tape, idetape_pc_t *pc, unsigned int length, struct idetape_bh *bh)
@@ -1573,7 +1578,7 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc, uns
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_FL_WRITING;
pc->bh = bh;
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
@@ -1581,7 +1586,7 @@ static void idetape_create_write_cmd(idetape_tape_t *tape, idetape_pc_t *pc, uns
pc->request_transfer = length * tape->blk_size;
pc->buffer_size = length * tape->blk_size;
if (pc->request_transfer == tape->stage_size)
- set_bit(PC_DMA_RECOMMENDED, &pc->flags);
+ pc->flags |= PC_FL_DMA_RECOMMENDED;
}

/*
@@ -1633,18 +1638,18 @@ static ide_startstop_t idetape_do_request(ide_drive_t *drive,
stat = drive->hwif->INB(IDE_STATUS_REG);

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

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

if (time_after(jiffies, tape->insert_time))
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) &&
- (stat & SEEK_STAT) == 0) {
+ if ((tape->flags & IDETAPE_FL_IGNORE_DSC) && (stat & SEEK_STAT) == 0) {
+ tape->flags &= ~IDETAPE_FL_IGNORE_DSC;
if (postponed_rq == NULL) {
tape->dsc_polling_start = jiffies;
tape->dsc_poll_freq = tape->best_dsc_rw_freq;
@@ -1722,7 +1727,7 @@ static inline int idetape_pipeline_active (idetape_tape_t *tape)
{
int rc1, rc2;

- rc1 = test_bit(IDETAPE_PIPELINE_ACTIVE, &tape->flags);
+ rc1 = !!(tape->flags & IDETAPE_FL_PIPELINE_ACTIVE);
rc2 = (tape->active_data_rq != NULL);
return rc1;
}
@@ -1960,7 +1965,7 @@ static ide_startstop_t idetape_read_position_callback(ide_drive_t *drive)
printk(KERN_INFO "ide-tape: Block location is unknown"
"to the tape\n");

- clear_bit(IDETAPE_ADDRESS_VALID, &tape->flags);
+ tape->flags &= ~IDETAPE_FL_ADDRESS_VALID;
idetape_end_request(drive, 0, 0);
} else {
debug_log(DBG_SENSE, "Block Location - %u\n",
@@ -1969,7 +1974,7 @@ 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);
+ tape->flags |= IDETAPE_FL_ADDRESS_VALID;
idetape_end_request(drive, 1, 0);
}
} else {
@@ -1991,7 +1996,7 @@ static void idetape_create_write_filemark_cmd (ide_drive_t *drive, idetape_pc_t
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_FL_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2038,7 +2043,7 @@ 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_FL_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2051,7 +2056,7 @@ static int idetape_wait_ready(ide_drive_t *drive, unsigned long timeout)
/*
* Wait for the tape to become ready
*/
- set_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags);
+ tape->flags |= IDETAPE_FL_MEDIUM_PRESENT;
timeout += jiffies;
while (time_before(jiffies, timeout)) {
idetape_create_test_unit_ready_cmd(&pc);
@@ -2120,7 +2125,7 @@ static void idetape_create_locate_cmd (ide_drive_t *drive, idetape_pc_t *pc, uns
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_FL_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2150,8 +2155,11 @@ 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))
- ++cnt; /* Filemarks count as 1 sector */
+ if (tape->flags & IDETAPE_FL_FILEMARK) {
+ tape->flags &= ~IDETAPE_FL_FILEMARK;
+ /* Filemarks count as 1 sector */
+ ++cnt;
+ }
tape->merge_stage_size = 0;
if (tape->merge_stage != NULL) {
__idetape_kfree_stage(tape->merge_stage);
@@ -2159,7 +2167,7 @@ static int __idetape_discard_read_pipeline (ide_drive_t *drive)
}

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

/* Remove pipeline stages. */
@@ -2271,7 +2279,7 @@ 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);
+ tape->flags |= IDETAPE_FL_PIPELINE_ACTIVE;
idetape_activate_next_stage(drive);
(void) ide_do_drive_cmd(drive, tape->active_data_rq, ide_end);
}
@@ -2289,7 +2297,7 @@ 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_FL_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2298,7 +2306,7 @@ 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_FL_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2308,7 +2316,7 @@ 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_FL_WAIT_FOR_DSC;
pc->callback = &idetape_pc_callback;
}

@@ -2396,9 +2404,11 @@ 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 (tape->flags & IDETAPE_FL_PIPELINE_ERR) {
+ tape->flags &= ~IDETAPE_FL_PIPELINE_ERR;
/* Return a deferred error */
return -EIO;
+ }
return blocks;
}

@@ -2469,7 +2479,7 @@ 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);
+ tape->flags &= ~IDETAPE_FL_PIPELINE_ERR;
tape->chrdev_dir = IDETAPE_DIR_NONE;

/*
@@ -2549,8 +2559,8 @@ static int idetape_init_read(ide_drive_t *drive, int max_stages)
idetape_init_rq(&rq, REQ_IDETAPE_READ);
rq.sector = tape->first_frame;
rq.nr_sectors = rq.current_nr_sectors = blocks;
- if (!test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags) &&
- tape->nr_stages < max_stages) {
+ if (!(tape->flags & IDETAPE_FL_PIPELINE_ERR) &&
+ tape->nr_stages < max_stages) {
new_stage = idetape_kmalloc_stage(tape);
while (new_stage != NULL) {
new_stage->rq = rq;
@@ -2589,7 +2599,7 @@ static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks)
/*
* If we are at a filemark, return a read length of 0
*/
- if (test_bit(IDETAPE_FILEMARK, &tape->flags))
+ if (tape->flags & IDETAPE_FL_FILEMARK)
return 0;

/*
@@ -2598,7 +2608,7 @@ static int idetape_add_chrdev_read_request (ide_drive_t *drive,int blocks)
*/
idetape_init_read(drive, tape->max_stages);
if (tape->first_stage == NULL) {
- if (test_bit(IDETAPE_PIPELINE_ERROR, &tape->flags))
+ if (tape->flags & IDETAPE_FL_PIPELINE_ERR)
return 0;
return idetape_queue_rw_tail(drive, REQ_IDETAPE_READ, blocks,
tape->merge_stage->bh);
@@ -2615,7 +2625,7 @@ 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);
+ tape->flags |= IDETAPE_FL_FILEMARK;
spin_lock_irqsave(&tape->lock, flags);
idetape_remove_stage_head(drive);
spin_unlock_irqrestore(&tape->lock, flags);
@@ -2769,12 +2779,14 @@ static int idetape_space_over_filemarks (ide_drive_t *drive,short mt_op,int mt_c
* filemarks.
*/
tape->merge_stage_size = 0;
- if (test_and_clear_bit(IDETAPE_FILEMARK, &tape->flags))
+ if (tape->flags & IDETAPE_FL_FILEMARK) {
+ tape->flags &= ~IDETAPE_FL_FILEMARK;
++count;
+ }
while (tape->first_stage != NULL) {
if (count == mt_count) {
if (mt_op == MTFSFM)
- set_bit(IDETAPE_FILEMARK, &tape->flags);
+ tape->flags |= IDETAPE_FL_FILEMARK;
return 0;
}
spin_lock_irqsave(&tape->lock, flags);
@@ -2854,7 +2866,7 @@ 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 (tape->flags & IDETAPE_FL_DETECT_BS)
if (count > tape->blk_size &&
(count % tape->blk_size) == 0)
tape->user_bs_factor = count / tape->blk_size;
@@ -2893,7 +2905,7 @@ 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 && (tape->flags & IDETAPE_FL_FILEMARK)) {
debug_log(DBG_SENSE, "%s: spacing over filemark\n", tape->name);

idetape_space_over_filemarks(drive, MTFSF, 1);
@@ -3077,7 +3089,7 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
idetape_create_load_unload_cmd(drive, &pc,!IDETAPE_LU_LOAD_MASK);
retval = idetape_queue_pc_tail(drive, &pc);
if (!retval)
- clear_bit(IDETAPE_MEDIUM_PRESENT, &tape->flags);
+ tape->flags &= ~IDETAPE_FL_MEDIUM_PRESENT;
return retval;
case MTNOP:
idetape_discard_read_pipeline(drive, 0);
@@ -3100,9 +3112,9 @@ static int idetape_mtioctop(ide_drive_t *drive, short mt_op, int mt_count)
return -EIO;
tape->user_bs_factor = mt_count /
tape->blk_size;
- clear_bit(IDETAPE_DETECT_BS, &tape->flags);
+ tape->flags &= ~IDETAPE_FL_DETECT_BS;
} else
- set_bit(IDETAPE_DETECT_BS, &tape->flags);
+ tape->flags |= IDETAPE_FL_DETECT_BS;
return 0;
case MTSEEK:
idetape_discard_read_pipeline(drive, 0);
@@ -3227,7 +3239,7 @@ static int idetape_chrdev_open (struct inode *inode, struct file *filp)
ide_drive_t *drive;
idetape_tape_t *tape;
idetape_pc_t pc;
- int retval;
+ int retval, testval;

if (i >= MAX_HWIFS * MAX_DRIVES)
return -ENXIO;
@@ -3249,24 +3261,26 @@ static int idetape_chrdev_open (struct inode *inode, struct file *filp)

filp->private_data = tape;

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

retval = idetape_wait_ready(drive, 60 * HZ);
if (retval) {
- clear_bit(IDETAPE_BUSY, &tape->flags);
+ tape->flags &= ~IDETAPE_FL_BUSY;
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 (!(tape->flags & IDETAPE_FL_ADDRESS_VALID))
(void)idetape_rewind_tape(drive);

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

/* Read block size and write protect status from drive. */
ide_tape_get_bsize_from_bdesc(drive);
@@ -3281,7 +3295,7 @@ 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);
+ tape->flags &= ~IDETAPE_FL_BUSY;
retval = -EROFS;
goto out_put_tape;
}
@@ -3351,7 +3365,7 @@ 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 && (tape->flags & IDETAPE_FL_MEDIUM_PRESENT))
(void) idetape_rewind_tape(drive);
if (tape->chrdev_dir == IDETAPE_DIR_NONE) {
if (tape->door_locked == DOOR_LOCKED) {
@@ -3361,7 +3375,7 @@ static int idetape_chrdev_release (struct inode *inode, struct file *filp)
}
}
}
- clear_bit(IDETAPE_BUSY, &tape->flags);
+ tape->flags &= ~IDETAPE_FL_BUSY;
ide_tape_put(tape);
unlock_kernel();
return 0;
@@ -3550,7 +3564,7 @@ static void idetape_setup (ide_drive_t *drive, idetape_tape_t *tape, int minor)
tape->speed_control = 1;
*((unsigned short *) &gcw) = drive->id->config;
if (gcw.drq_type == 1)
- set_bit(IDETAPE_DRQ_INTERRUPT, &tape->flags);
+ tape->flags |= IDETAPE_FL_DRQ_INTERRUPT;

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

--
1.5.3.7

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