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authorAndreas Eversberg <andreas@eversberg.eu>2009-05-22 11:04:48 +0000
committerDavid S. Miller <davem@davemloft.net>2009-05-25 00:51:33 -0700
commitb5df5a5c3bf0f809d854ad7156ce26b709b533c0 (patch)
tree5655ba6abfb945b00bb5eae5c9bdb58d6f21180c /drivers/isdn/mISDN/dsp_core.c
parente73f6b2260daf02793071e5ce06ea87df762920a (diff)
mISDN: Fix DTMF locking bug issue
DTMF digits were sent up to socket in locked state. Receive audio stream was not enabled in certain condition. Signed-off-by: Andreas Eversberg <andreas@eversberg.eu> Signed-off-by: Karsten Keil <keil@b1-systems.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/isdn/mISDN/dsp_core.c')
-rw-r--r--drivers/isdn/mISDN/dsp_core.c37
1 files changed, 20 insertions, 17 deletions
diff --git a/drivers/isdn/mISDN/dsp_core.c b/drivers/isdn/mISDN/dsp_core.c
index 621ea9bc7c2..6b493985430 100644
--- a/drivers/isdn/mISDN/dsp_core.c
+++ b/drivers/isdn/mISDN/dsp_core.c
@@ -311,6 +311,7 @@ dsp_control_req(struct dsp *dsp, struct mISDNhead *hh, struct sk_buff *skb)
/* check dtmf hardware */
dsp_dtmf_hardware(dsp);
+ dsp_rx_off(dsp);
break;
case DTMF_TONE_STOP: /* turn off DTMF */
if (dsp_debug & DEBUG_DSP_CORE)
@@ -657,11 +658,10 @@ get_features(struct mISDNchannel *ch)
static int
dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
{
- struct dsp *dsp = container_of(ch, struct dsp, ch);
+ struct dsp *dsp = container_of(ch, struct dsp, ch);
struct mISDNhead *hh;
int ret = 0;
- u8 *digits;
- int cont;
+ u8 *digits = NULL;
u_long flags;
hh = mISDN_HEAD_P(skb);
@@ -716,40 +716,43 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
/* change volume if requested */
if (dsp->rx_volume)
dsp_change_volume(skb, dsp->rx_volume);
-
/* check if dtmf soft decoding is turned on */
if (dsp->dtmf.software) {
digits = dsp_dtmf_goertzel_decode(dsp, skb->data,
skb->len, (dsp_options&DSP_OPT_ULAW)?1:0);
+ }
+ /* we need to process receive data if software */
+ if (dsp->pcm_slot_tx < 0 && dsp->pcm_slot_rx < 0) {
+ /* process data from card at cmx */
+ dsp_cmx_receive(dsp, skb);
+ }
+
+ spin_unlock_irqrestore(&dsp_lock, flags);
+
+ /* send dtmf result, if any */
+ if (digits) {
while (*digits) {
+ int k;
struct sk_buff *nskb;
if (dsp_debug & DEBUG_DSP_DTMF)
printk(KERN_DEBUG "%s: digit"
"(%c) to layer %s\n",
__func__, *digits, dsp->name);
- cont = DTMF_TONE_VAL | *digits;
+ k = *digits | DTMF_TONE_VAL;
nskb = _alloc_mISDN_skb(PH_CONTROL_IND,
- MISDN_ID_ANY, sizeof(int), &cont,
- GFP_ATOMIC);
+ MISDN_ID_ANY, sizeof(int), &k,
+ GFP_ATOMIC);
if (nskb) {
if (dsp->up) {
if (dsp->up->send(
dsp->up, nskb))
- dev_kfree_skb(nskb);
+ dev_kfree_skb(nskb);
} else
dev_kfree_skb(nskb);
}
digits++;
}
}
- /* we need to process receive data if software */
- if (dsp->pcm_slot_tx < 0 && dsp->pcm_slot_rx < 0) {
- /* process data from card at cmx */
- dsp_cmx_receive(dsp, skb);
- }
-
- spin_unlock_irqrestore(&dsp_lock, flags);
-
if (dsp->rx_disabled) {
/* if receive is not allowed */
break;
@@ -789,7 +792,7 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *skb)
if (dsp->up) {
if (dsp->up->send(
dsp->up, nskb))
- dev_kfree_skb(nskb);
+ dev_kfree_skb(nskb);
} else
dev_kfree_skb(nskb);
}