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drivers/block/floppy.c: unclutter redo_fd_request logic

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Change for(;;) with continue; to label: goto label
Reduces indentation and adds a bit of clarity.

Signed-off-by: Joe Perches <joe@perches.com>
Cc: Stephen Hemminger <shemminger@vyatta.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Marcin Slusarz <marcin.slusarz@gmail.com>
Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Joe Perches 2010-03-10 15:21:03 -08:00 committed by Linus Torvalds
parent 416d8d2888
commit 0da3132f90
1 changed files with 53 additions and 54 deletions
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107
drivers/block/floppy.c
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@ -2892,64 +2892,63 @@ static void redo_fd_request(void)
if (current_drive < N_DRIVE)
floppy_off(current_drive);
for (;;) {
if (!current_req) {
struct request *req;
do_request:
if (!current_req) {
struct request *req;
spin_lock_irq(floppy_queue->queue_lock);
req = blk_fetch_request(floppy_queue);
spin_unlock_irq(floppy_queue->queue_lock);
if (!req) {
do_floppy = NULL;
unlock_fdc();
return;
}
current_req = req;
}
drive = (long)current_req->rq_disk->private_data;
set_fdc(drive);
reschedule_timeout(current_reqD, "redo fd request", 0);
set_floppy(drive);
raw_cmd = &default_raw_cmd;
raw_cmd->flags = 0;
if (start_motor(redo_fd_request))
spin_lock_irq(floppy_queue->queue_lock);
req = blk_fetch_request(floppy_queue);
spin_unlock_irq(floppy_queue->queue_lock);
if (!req) {
do_floppy = NULL;
unlock_fdc();
return;
disk_change(current_drive);
if (test_bit(current_drive, &fake_change) ||
test_bit(FD_DISK_CHANGED_BIT, &DRS->flags)) {
DPRINT("disk absent or changed during operation\n");
request_done(0);
continue;
}
if (!_floppy) { /* Autodetection */
if (!probing) {
DRS->probed_format = 0;
if (next_valid_format()) {
DPRINT("no autodetectable formats\n");
_floppy = NULL;
request_done(0);
continue;
}
}
probing = 1;
_floppy =
floppy_type + DP->autodetect[DRS->probed_format];
} else
probing = 0;
errors = &(current_req->errors);
tmp = make_raw_rw_request();
if (tmp < 2) {
request_done(tmp);
continue;
}
if (test_bit(FD_NEED_TWADDLE_BIT, &DRS->flags))
twaddle();
schedule_bh(floppy_start);
debugt("queue fd request");
return;
current_req = req;
}
drive = (long)current_req->rq_disk->private_data;
set_fdc(drive);
reschedule_timeout(current_reqD, "redo fd request", 0);
set_floppy(drive);
raw_cmd = &default_raw_cmd;
raw_cmd->flags = 0;
if (start_motor(redo_fd_request))
return;
disk_change(current_drive);
if (test_bit(current_drive, &fake_change) ||
test_bit(FD_DISK_CHANGED_BIT, &DRS->flags)) {
DPRINT("disk absent or changed during operation\n");
request_done(0);
goto do_request;
}
if (!_floppy) { /* Autodetection */
if (!probing) {
DRS->probed_format = 0;
if (next_valid_format()) {
DPRINT("no autodetectable formats\n");
_floppy = NULL;
request_done(0);
goto do_request;
}
}
probing = 1;
_floppy = floppy_type + DP->autodetect[DRS->probed_format];
} else
probing = 0;
errors = &(current_req->errors);
tmp = make_raw_rw_request();
if (tmp < 2) {
request_done(tmp);
goto do_request;
}
if (test_bit(FD_NEED_TWADDLE_BIT, &DRS->flags))
twaddle();
schedule_bh(floppy_start);
debugt("queue fd request");
return;
}
static struct cont_t rw_cont = {