diff options
| author |   Tilman Schmidt <tilman@imap.cc> | 2014-12-10 13:41:55 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-12-10 15:06:09 -0500 |
| commit | f650dd28051f5dc66986407f7b2d50e5828642cb (patch) | |
| tree | 7729bbc0c6f704fdd085962c5c86fe4a7a32213f /drivers | |
| parent | isdn/gigaset: drop duplicate declaration (diff) | |
| download | linux-dev-f650dd28051f5dc66986407f7b2d50e5828642cb.tar.xz linux-dev-f650dd28051f5dc66986407f7b2d50e5828642cb.zip | |
isdn/gigaset: clarify gigaset_modem_fill control structure
Replace the flag-controlled retry loop by explicit goto statements
in the error branches to make the control structure easier to
understand.
Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/isdn/gigaset/usb-gigaset.c | 52 |
1 files changed, 24 insertions, 28 deletions
diff --git a/drivers/isdn/gigaset/usb-gigaset.c b/drivers/isdn/gigaset/usb-gigaset.c index a8e652dac54d..c31d74626498 100644 --- a/drivers/isdn/gigaset/usb-gigaset.c +++ b/drivers/isdn/gigaset/usb-gigaset.c @@ -304,7 +304,6 @@ static void gigaset_modem_fill(unsigned long data) struct cardstate *cs = (struct cardstate *) data; struct bc_state *bcs = &cs->bcs[0]; /* only one channel */ struct cmdbuf_t *cb; - int again; gig_dbg(DEBUG_OUTPUT, "modem_fill"); @@ -313,36 +312,33 @@ static void gigaset_modem_fill(unsigned long data) return; } - do { - again = 0; - if (!bcs->tx_skb) { /* no skb is being sent */ - cb = cs->cmdbuf; - if (cb) { /* commands to send? */ - gig_dbg(DEBUG_OUTPUT, "modem_fill: cb"); - if (send_cb(cs, cb) < 0) { - gig_dbg(DEBUG_OUTPUT, - "modem_fill: send_cb failed"); - again = 1; /* no callback will be - called! */ - } - } else { /* skbs to send? */ - bcs->tx_skb = skb_dequeue(&bcs->squeue); - if (bcs->tx_skb) - gig_dbg(DEBUG_INTR, - "Dequeued skb (Adr: %lx)!", - (unsigned long) bcs->tx_skb); - } - } - - if (bcs->tx_skb) { - gig_dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); - if (write_modem(cs) < 0) { +again: + if (!bcs->tx_skb) { /* no skb is being sent */ + cb = cs->cmdbuf; + if (cb) { /* commands to send? */ + gig_dbg(DEBUG_OUTPUT, "modem_fill: cb"); + if (send_cb(cs, cb) < 0) { gig_dbg(DEBUG_OUTPUT, - "modem_fill: write_modem failed"); - again = 1; /* no callback will be called! */ + "modem_fill: send_cb failed"); + goto again; /* no callback will be called! */ } + return; } - } while (again); + + /* skbs to send? */ + bcs->tx_skb = skb_dequeue(&bcs->squeue); + if (!bcs->tx_skb) + return; + + gig_dbg(DEBUG_INTR, "Dequeued skb (Adr: %lx)!", + (unsigned long) bcs->tx_skb); + } + + gig_dbg(DEBUG_OUTPUT, "modem_fill: tx_skb"); + if (write_modem(cs) < 0) { + gig_dbg(DEBUG_OUTPUT, "modem_fill: write_modem failed"); + goto again; /* no callback will be called! */ + } } /* |