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Subject[PATCH 1/9] ide-atapi: remove PC_FLAG_WRITING atapi flag
Date
From
There should be no functionality change resulting from this patch.

Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
---
drivers/ide/ide-atapi.c | 12 +++++++-----
drivers/ide/ide-floppy.c | 4 ----
drivers/ide/ide-floppy_ioctl.c | 1 -
drivers/ide/ide-tape.c | 4 ++--
include/linux/ide.h | 3 +--
5 files changed, 10 insertions(+), 14 deletions(-)
diff --git a/drivers/ide/ide-atapi.c b/drivers/ide/ide-atapi.c
index d412bd2..2f0d5e7 100644
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -296,11 +296,15 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
const struct ide_tp_ops *tp_ops = hwif->tp_ops;
xfer_func_t *xferfunc;
unsigned int timeout, temp;
+ int write = 0;
u16 bcount;
u8 stat, ireason, dsc = 0;

debug_log("Enter %s - interrupt handler\n", __func__);

+ if (rq)
+ write = (rq_data_dir(rq) == WRITE) ? 1 : 0;
+
timeout = (drive->media == ide_floppy) ? WAIT_FLOPPY_CMD
: WAIT_TAPE_CMD;

@@ -389,8 +393,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
return ide_do_reset(drive);
}

- if (((ireason & ATAPI_IO) == ATAPI_IO) ==
- !!(pc->flags & PC_FLAG_WRITING)) {
+ if (((ireason & ATAPI_IO) == ATAPI_IO) == write) {
/* Hopefully, we will never get here */
printk(KERN_ERR "%s: We wanted to %s, but the device wants us "
"to %s!\n", drive->name,
@@ -399,7 +402,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)
return ide_do_reset(drive);
}

- if (!(pc->flags & PC_FLAG_WRITING)) {
+ if (!write) {
/* Reading - Check that we have enough space */
temp = pc->xferred + bcount;
if (temp > pc->req_xfer) {
@@ -421,8 +424,7 @@ static ide_startstop_t ide_pc_intr(ide_drive_t *drive)

if ((drive->media == ide_floppy && !pc->buf) ||
(drive->media == ide_tape && pc->bh)) {
- int done = drive->pc_io_buffers(drive, pc, bcount,
- !!(pc->flags & PC_FLAG_WRITING));
+ int done = drive->pc_io_buffers(drive, pc, bcount, write);

/* FIXME: don't do partial completions */
if (drive->media == ide_floppy)
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index fdec729..3ebe75a 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -254,8 +254,6 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,

pc->rq = rq;
pc->b_count = 0;
- if (rq->cmd_flags & REQ_RW)
- pc->flags |= PC_FLAG_WRITING;
pc->buf = NULL;
pc->req_xfer = pc->buf_size = blocks * floppy->block_size;
pc->flags |= PC_FLAG_DMA_OK;
@@ -268,8 +266,6 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
memcpy(pc->c, rq->cmd, sizeof(pc->c));
pc->rq = rq;
pc->b_count = 0;
- if (rq->data_len && rq_data_dir(rq) == WRITE)
- pc->flags |= PC_FLAG_WRITING;
pc->buf = rq->data;
if (rq->bio)
pc->flags |= PC_FLAG_DMA_OK;
diff --git a/drivers/ide/ide-floppy_ioctl.c b/drivers/ide/ide-floppy_ioctl.c
index 8f8be85..513f651 100644
--- a/drivers/ide/ide-floppy_ioctl.c
+++ b/drivers/ide/ide-floppy_ioctl.c
@@ -109,7 +109,6 @@ static void ide_floppy_create_format_unit_cmd(struct ide_atapi_pc *pc, int b,
put_unaligned(cpu_to_be32(b), (unsigned int *)(&pc->buf[4]));
put_unaligned(cpu_to_be32(l), (unsigned int *)(&pc->buf[8]));
pc->buf_size = 12;
- pc->flags |= PC_FLAG_WRITING;
}

static int ide_floppy_get_sfrp_bit(ide_drive_t *drive, struct ide_atapi_pc *pc)
diff --git a/drivers/ide/ide-tape.c b/drivers/ide/ide-tape.c
index ac9e29a..ba89d6a 100644
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -373,10 +373,11 @@ static void idetape_output_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc,
static void idetape_update_buffers(ide_drive_t *drive, struct ide_atapi_pc *pc)
{
struct idetape_bh *bh = pc->bh;
+ struct request *rq = drive->hwif->hwgroup->rq;
int count;
unsigned int bcount = pc->xferred;

- if (pc->flags & PC_FLAG_WRITING)
+ if (rq_data_dir(rq) == WRITE)
return;
while (bcount) {
if (bh == NULL) {
@@ -774,7 +775,6 @@ static void ide_tape_create_rw_cmd(idetape_tape_t *tape,
atomic_set(&bh->b_count, 0);
} else if (opcode == WRITE_6) {
pc->c[0] = WRITE_6;
- pc->flags |= PC_FLAG_WRITING;
pc->b_data = bh->b_data;
pc->b_count = atomic_read(&bh->b_count);
}
diff --git a/include/linux/ide.h b/include/linux/ide.h
index ad57a44..2041073 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -386,9 +386,8 @@ enum {
PC_FLAG_DMA_OK = (1 << 3),
PC_FLAG_DMA_IN_PROGRESS = (1 << 4),
PC_FLAG_DMA_ERROR = (1 << 5),
- PC_FLAG_WRITING = (1 << 6),
/* command timed out */
- PC_FLAG_TIMEDOUT = (1 << 7),
+ PC_FLAG_TIMEDOUT = (1 << 6),
};

/*
--
1.6.0.4


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