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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>
This commit is contained in:
Andreas Eversberg 2009-05-22 11:04:48 +00:00 committed by David S. Miller
parent e73f6b2260
commit b5df5a5c3b
3 changed files with 31 additions and 28 deletions
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4
drivers/isdn/hardware/mISDN/hfcmulti.c
View File

@ -1817,8 +1817,8 @@ hfcmulti_dtmf(struct hfc_multi *hc)
coeff[(co<<1)|1] = mantissa;
}
if (debug & DEBUG_HFCMULTI_DTMF)
printk("%s: DTMF ready %08x %08x %08x %08x "
"%08x %08x %08x %08x\n", __func__,
printk(" DTMF ready %08x %08x %08x %08x "
"%08x %08x %08x %08x\n",
coeff[0], coeff[1], coeff[2], coeff[3],
coeff[4], coeff[5], coeff[6], coeff[7]);
hc->chan[ch].coeff_count++;

2
drivers/isdn/mISDN/dsp.h
View File

@ -124,7 +124,7 @@ struct dsp_dtmf {
/* buffers one full dtmf frame */
u8 lastwhat, lastdigit;
int count;
u8 digits[16]; /* just the dtmf result */
u8 digits[16]; /* dtmf result */
};

53
drivers/isdn/mISDN/dsp_core.c
View File

@ -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);
@ -716,31 +716,10 @@ 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);
while (*digits) {
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;
nskb = _alloc_mISDN_skb(PH_CONTROL_IND,
MISDN_ID_ANY, sizeof(int), &cont,
GFP_ATOMIC);
if (nskb) {
if (dsp->up) {
if (dsp->up->send(
dsp->up, 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) {
@ -750,6 +729,30 @@ dsp_function(struct mISDNchannel *ch, struct sk_buff *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);
k = *digits | DTMF_TONE_VAL;
nskb = _alloc_mISDN_skb(PH_CONTROL_IND,
MISDN_ID_ANY, sizeof(int), &k,
GFP_ATOMIC);
if (nskb) {
if (dsp->up) {
if (dsp->up->send(
dsp->up, nskb))
dev_kfree_skb(nskb);
} else
dev_kfree_skb(nskb);
}
digits++;
}
}
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);
}