diff options
| author | Karsten Keil <kkeil@linux-pingi.de> | 2012-05-16 03:51:02 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-05-16 23:22:29 +0400 |
| commit | 8bfddfbe2100862fd39b97001d0559ccd4c77f19 (patch) | |
| tree | 587d69b18f6b7ed23eb02577f1d531c626c36216 /drivers/isdn/hardware/mISDN/w6692.c | |
| parent | 1368112c07bae879fa3d1c21f236ca8eea3e5e84 (diff) | |
| download | linux-8bfddfbe2100862fd39b97001d0559ccd4c77f19.tar.xz | |
mISDN: Early confirm for transparent data
It is better to send a confirm for transparent data early as possible
to avoid TX underuns.
Signed-off-by: Karsten Keil <kkeil@linux-pingi.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/hardware/mISDN/w6692.c')
| -rw-r--r-- | drivers/isdn/hardware/mISDN/w6692.c | 21 |
1 files changed, 6 insertions, 15 deletions
diff --git a/drivers/isdn/hardware/mISDN/w6692.c b/drivers/isdn/hardware/mISDN/w6692.c index 0b5e9297e95b..f1c0bf1ac689 100644 --- a/drivers/isdn/hardware/mISDN/w6692.c +++ b/drivers/isdn/hardware/mISDN/w6692.c @@ -638,15 +638,11 @@ w6692_mode(struct w6692_ch *wch, u32 pr) static void send_next(struct w6692_ch *wch) { - if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) + if (wch->bch.tx_skb && wch->bch.tx_idx < wch->bch.tx_skb->len) { W6692_fill_Bfifo(wch); - else { - if (wch->bch.tx_skb) { - /* send confirm, on trans, free on hdlc. */ - if (test_bit(FLG_TRANSPARENT, &wch->bch.Flags)) - confirm_Bsend(&wch->bch); + } else { + if (wch->bch.tx_skb) dev_kfree_skb(wch->bch.tx_skb); - } if (get_next_bframe(&wch->bch)) W6692_fill_Bfifo(wch); } @@ -944,22 +940,17 @@ w6692_l2l1B(struct mISDNchannel *ch, struct sk_buff *skb) struct w6692_hw *card = bch->hw; int ret = -EINVAL; struct mISDNhead *hh = mISDN_HEAD_P(skb); - u32 id; - u_long flags; + unsigned long flags; switch (hh->prim) { case PH_DATA_REQ: spin_lock_irqsave(&card->lock, flags); ret = bchannel_senddata(bch, skb); if (ret > 0) { /* direct TX */ - id = hh->id; /* skb can be freed */ ret = 0; W6692_fill_Bfifo(bc); - spin_unlock_irqrestore(&card->lock, flags); - if (!test_bit(FLG_TRANSPARENT, &bch->Flags)) - queue_ch_frame(ch, PH_DATA_CNF, id, NULL); - } else - spin_unlock_irqrestore(&card->lock, flags); + } + spin_unlock_irqrestore(&card->lock, flags); return ret; case PH_ACTIVATE_REQ: spin_lock_irqsave(&card->lock, flags); |