From: viro@parcelfarce.linux.theplanet.co.uk
Equivalent transformation:
call of pi_do_claimed() in run_fsm() expanded; recursive
call of run_fsm() replaced with loop.
---
25-akpm/drivers/block/paride/pd.c | 32 ++++++++++++++++++--------------
1 files changed, 18 insertions(+), 14 deletions(-)
diff -puN drivers/block/paride/pd.c~PI13-run_fsm-loop-RC1 drivers/block/paride/pd.c
--- 25/drivers/block/paride/pd.c~PI13-run_fsm-loop-RC1 Wed Jan 14 13:46:20 2004
+++ 25-akpm/drivers/block/paride/pd.c Wed Jan 14 13:46:20 2004
@@ -215,21 +215,25 @@ static struct request *pd_req; /* curren
static void run_fsm(void)
{
- enum action res;
+ while (1) {
+ enum action res;
- switch(res = phase()) {
- case Ok: case Fail:
- pi_unclaim(pi_current);
- next_request(res);
- break;
- case Wait:
- pi_unclaim(pi_current);
- /* fallthrough */
- case Claim:
- pi_do_claimed(pi_current, run_fsm);
- break;
- case Hold:
- ps_set_intr();
+ switch(res = phase()) {
+ case Ok: case Fail:
+ pi_unclaim(pi_current);
+ next_request(res);
+ return;
+ case Wait:
+ pi_unclaim(pi_current);
+ /* fallthrough */
+ case Claim:
+ if (!pi_schedule_claimed(pi_current, run_fsm))
+ return;
+ break;
+ case Hold:
+ ps_set_intr();
+ return;
+ }
}
}
_