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path: root/drivers/ide/ide-floppy.c
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Diffstat (limited to 'drivers/ide/ide-floppy.c')
-rw-r--r--drivers/ide/ide-floppy.c56
1 files changed, 24 insertions, 32 deletions
diff --git a/drivers/ide/ide-floppy.c b/drivers/ide/ide-floppy.c
index 650981758f15..8b3f204f7d73 100644
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -77,7 +77,8 @@ static int ide_floppy_callback(ide_drive_t *drive, int dsc)
(rq && blk_pc_request(rq)))
uptodate = 1; /* FIXME */
else if (pc->c[0] == GPCMD_REQUEST_SENSE) {
- u8 *buf = pc->buf;
+
+ u8 *buf = bio_data(rq->bio);
if (!pc->error) {
floppy->sense_key = buf[2] & 0x0F;
@@ -209,8 +210,7 @@ static void idefloppy_create_rw_cmd(ide_drive_t *drive,
pc->rq = rq;
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;
}
@@ -225,9 +225,6 @@ static void idefloppy_blockpc_cmd(struct ide_disk_obj *floppy,
if (rq_data_dir(rq) == WRITE)
pc->flags |= PC_FLAG_WRITING;
}
- /* pio will be performed by ide_pio_bytes() which handles sg fine */
- pc->buf = NULL;
- pc->req_xfer = pc->buf_size = blk_rq_bytes(rq);
}
static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
@@ -272,10 +269,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
} else if (blk_pc_request(rq)) {
pc = &floppy->queued_pc;
idefloppy_blockpc_cmd(floppy, pc, rq);
- } else {
- blk_dump_rq_flags(rq, PFX "unsupported command in queue");
- goto out_end;
- }
+ } else
+ BUG();
ide_prep_sense(drive, rq);
@@ -286,8 +281,8 @@ static ide_startstop_t ide_floppy_do_request(ide_drive_t *drive,
cmd.rq = rq;
- if (blk_fs_request(rq) || pc->req_xfer) {
- ide_init_sg_cmd(&cmd, pc->req_xfer);
+ if (blk_fs_request(rq) || blk_rq_bytes(rq)) {
+ ide_init_sg_cmd(&cmd, blk_rq_bytes(rq));
ide_map_sg(drive, &cmd);
}
@@ -311,33 +306,33 @@ static int ide_floppy_get_flexible_disk_page(ide_drive_t *drive,
{
struct ide_disk_obj *floppy = drive->driver_data;
struct gendisk *disk = floppy->disk;
- u8 *page;
+ u8 *page, buf[40];
int capacity, lba_capacity;
u16 transfer_rate, sector_size, cyls, rpm;
u8 heads, sectors;
ide_floppy_create_mode_sense_cmd(pc, IDEFLOPPY_FLEXIBLE_DISK_PAGE);
- if (ide_queue_pc_tail(drive, disk, pc)) {
+ if (ide_queue_pc_tail(drive, disk, pc, buf, pc->req_xfer)) {
printk(KERN_ERR PFX "Can't get flexible disk page params\n");
return 1;
}
- if (pc->buf[3] & 0x80)
+ if (buf[3] & 0x80)
drive->dev_flags |= IDE_DFLAG_WP;
else
drive->dev_flags &= ~IDE_DFLAG_WP;
set_disk_ro(disk, !!(drive->dev_flags & IDE_DFLAG_WP));
- page = &pc->buf[8];
+ page = &buf[8];
- transfer_rate = be16_to_cpup((__be16 *)&pc->buf[8 + 2]);
- sector_size = be16_to_cpup((__be16 *)&pc->buf[8 + 6]);
- cyls = be16_to_cpup((__be16 *)&pc->buf[8 + 8]);
- rpm = be16_to_cpup((__be16 *)&pc->buf[8 + 28]);
- heads = pc->buf[8 + 4];
- sectors = pc->buf[8 + 5];
+ transfer_rate = be16_to_cpup((__be16 *)&buf[8 + 2]);
+ sector_size = be16_to_cpup((__be16 *)&buf[8 + 6]);
+ cyls = be16_to_cpup((__be16 *)&buf[8 + 8]);
+ rpm = be16_to_cpup((__be16 *)&buf[8 + 28]);
+ heads = buf[8 + 4];
+ sectors = buf[8 + 5];
capacity = cyls * heads * sectors * sector_size;
@@ -387,22 +382,19 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
drive->capacity64 = 0;
ide_floppy_create_read_capacity_cmd(&pc);
- pc.buf = &pc_buf[0];
- pc.buf_size = sizeof(pc_buf);
-
- if (ide_queue_pc_tail(drive, disk, &pc)) {
+ if (ide_queue_pc_tail(drive, disk, &pc, pc_buf, pc.req_xfer)) {
printk(KERN_ERR PFX "Can't get floppy parameters\n");
return 1;
}
- header_len = pc.buf[3];
- cap_desc = &pc.buf[4];
+ header_len = pc_buf[3];
+ cap_desc = &pc_buf[4];
desc_cnt = header_len / 8; /* capacity descriptor of 8 bytes */
for (i = 0; i < desc_cnt; i++) {
unsigned int desc_start = 4 + i*8;
- blocks = be32_to_cpup((__be32 *)&pc.buf[desc_start]);
- length = be16_to_cpup((__be16 *)&pc.buf[desc_start + 6]);
+ blocks = be32_to_cpup((__be32 *)&pc_buf[desc_start]);
+ length = be16_to_cpup((__be16 *)&pc_buf[desc_start + 6]);
ide_debug_log(IDE_DBG_PROBE, "Descriptor %d: %dkB, %d blocks, "
"%d sector size",
@@ -415,7 +407,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
* the code below is valid only for the 1st descriptor, ie i=0
*/
- switch (pc.buf[desc_start + 4] & 0x03) {
+ switch (pc_buf[desc_start + 4] & 0x03) {
/* Clik! drive returns this instead of CAPACITY_CURRENT */
case CAPACITY_UNFORMATTED:
if (!(drive->atapi_flags & IDE_AFLAG_CLIK_DRIVE))
@@ -464,7 +456,7 @@ static int ide_floppy_get_capacity(ide_drive_t *drive)
break;
}
ide_debug_log(IDE_DBG_PROBE, "Descriptor 0 Code: %d",
- pc.buf[desc_start + 4] & 0x03);
+ pc_buf[desc_start + 4] & 0x03);
}
/* Clik! disk does not support get_flexible_disk_page */