diff options
| author | Tilman Schmidt <tilman@imap.cc> | 2006-04-10 22:55:16 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-04-11 06:18:50 -0700 |
| commit | 69049cc87dccb1e6fb54aa25c63033efac805dbd (patch) | |
| tree | 9db1953a831091335b98f8749865f4c8b410ff9b /drivers/isdn/gigaset/i4l.c | |
| parent | 27d1ac2ef7d0b9250ca9fd2ef506e12866ce8fdf (diff) | |
| download | linux-69049cc87dccb1e6fb54aa25c63033efac805dbd.tar.gz | |
[PATCH] isdn4linux: Siemens Gigaset drivers: make some variables non-atomic
With Hansjoerg Lipp <hjlipp@web.de> Replace some atomic_t variables in the Gigaset drivers by non-atomic ones, using spinlocks instead to assure atomicity, as proposed in discussions on the linux-kernel mailing list. Signed-off-by: Hansjoerg Lipp <hjlipp@web.de> Signed-off-by: Tilman Schmidt <tilman@imap.cc> Cc: Karsten Keil <kkeil@suse.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/isdn/gigaset/i4l.c')
| -rw-r--r-- | drivers/isdn/gigaset/i4l.c | 19 |
1 files changed, 9 insertions, 10 deletions
diff --git a/drivers/isdn/gigaset/i4l.c b/drivers/isdn/gigaset/i4l.c index 7059b84b96a7..0815dbfb8291 100644 --- a/drivers/isdn/gigaset/i4l.c +++ b/drivers/isdn/gigaset/i4l.c @@ -56,11 +56,6 @@ static int writebuf_from_LL(int driverID, int channel, int ack, "Receiving data from LL (id: %d, ch: %d, ack: %d, sz: %d)", driverID, channel, ack, len); - if (!atomic_read(&cs->connected)) { - err("%s: disconnected", __func__); - return -ENODEV; - } - if (!len) { if (ack) notice("%s: not ACKing empty packet", __func__); @@ -78,7 +73,7 @@ static int writebuf_from_LL(int driverID, int channel, int ack, len, skblen, (unsigned) skb->head[0], (unsigned) skb->head[1]); /* pass to device-specific module */ - return cs->ops->send_skb(bcs, skb); + return cs->ops->send_skb(bcs, skb); //FIXME cs->ops->send_skb() must handle !cs->connected correctly } void gigaset_skb_sent(struct bc_state *bcs, struct sk_buff *skb) @@ -119,11 +114,12 @@ static int command_from_LL(isdn_ctrl *cntrl) struct bc_state *bcs; int retval = 0; struct setup_parm *sp; + unsigned param; + unsigned long flags; gigaset_debugdrivers(); - //FIXME "remove test for &connected" - if ((!cs || !atomic_read(&cs->connected))) { + if (!cs) { warn("LL tried to access unknown device with nr. %d", cntrl->driver); return -ENODEV; @@ -166,8 +162,11 @@ static int command_from_LL(isdn_ctrl *cntrl) } *sp = cntrl->parm.setup; - if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, - atomic_read(&bcs->at_state.seq_index), + spin_lock_irqsave(&cs->lock, flags); + param = bcs->at_state.seq_index; + spin_unlock_irqrestore(&cs->lock, flags); + + if (!gigaset_add_event(cs, &bcs->at_state, EV_DIAL, sp, param, NULL)) { //FIXME what should we do? kfree(sp); |