Clean up some chan_zap code to make it more readable. (issue #6834 reported by ppyy)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@28704 65c4cc65-6c06-0410-ace0-fbb531ad65f3

diff --git a/channels/chan_zap.c b/channels/chan_zap.c
index d83f6ae0abd16bee6d72442e64a2bbc61447dc97..dfaf4882b20325cfebffb5a945ce388b80207536 100644 (file)
--- a/channels/chan_zap.c
+++ b/channels/chan_zap.c
@@ -7802,7 +7802,6 @@ static int pri_find_principle(struct zt_pri *pri, int channel)
        ZT_PARAMS param;
        int principle = -1;
        int explicit = PRI_EXPLICIT(channel);
-       span = PRI_SPAN(channel);
        channel = PRI_CHANNEL(channel);
 
        if (!explicit) {
@@ -8724,14 +8723,11 @@ static void *pri_dchannel(void *vpri)
                                if (chanpos < 0) {
                                        ast_log(LOG_WARNING, "Ringing requested on unconfigured channel %d/%d span %d\n", 
                                                PRI_SPAN(e->ringing.channel), PRI_CHANNEL(e->ringing.channel), pri->span);
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        chanpos = pri_fixup_principle(pri, chanpos, e->ringing.call);
                                        if (chanpos < 0) {
                                                ast_log(LOG_WARNING, "Ringing requested on channel %d/%d not in use on span %d\n", 
                                                        PRI_SPAN(e->ringing.channel), PRI_CHANNEL(e->ringing.channel), pri->span);
-                                               chanpos = -1;
                                        } else {
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
                                                if (ast_strlen_zero(pri->pvts[chanpos]->dop.dialstr)) {
@@ -8844,14 +8840,11 @@ static void *pri_dchannel(void *vpri)
                                if (chanpos < 0) {
                                        ast_log(LOG_WARNING, "Facility Name requested on unconfigured channel %d/%d span %d\n", 
                                                PRI_SPAN(e->facname.channel), PRI_CHANNEL(e->facname.channel), pri->span);
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        chanpos = pri_fixup_principle(pri, chanpos, e->facname.call);
                                        if (chanpos < 0) {
                                                ast_log(LOG_WARNING, "Facility Name requested on channel %d/%d not in use on span %d\n", 
                                                        PRI_SPAN(e->facname.channel), PRI_CHANNEL(e->facname.channel), pri->span);
-                                               chanpos = -1;
                                        } else {
                                                /* Re-use *69 field for PRI */
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
@@ -8868,14 +8861,11 @@ static void *pri_dchannel(void *vpri)
                                if (chanpos < 0) {
                                        ast_log(LOG_WARNING, "Answer on unconfigured channel %d/%d span %d\n", 
                                                PRI_SPAN(e->answer.channel), PRI_CHANNEL(e->answer.channel), pri->span);
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        chanpos = pri_fixup_principle(pri, chanpos, e->answer.call);
                                        if (chanpos < 0) {
                                                ast_log(LOG_WARNING, "Answer requested on channel %d/%d not in use on span %d\n", 
                                                        PRI_SPAN(e->answer.channel), PRI_CHANNEL(e->answer.channel), pri->span);
-                                               chanpos = -1;
                                        } else {
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
                                                /* Now we can do call progress detection */
@@ -8929,9 +8919,7 @@ static void *pri_dchannel(void *vpri)
                                if (chanpos < 0) {
                                        ast_log(LOG_WARNING, "Hangup requested on unconfigured channel %d/%d span %d\n", 
                                                PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        chanpos = pri_fixup_principle(pri, chanpos, e->hangup.call);
                                        if (chanpos > -1) {
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
@@ -8999,9 +8987,7 @@ static void *pri_dchannel(void *vpri)
                                if (chanpos < 0) {
                                        ast_log(LOG_WARNING, "Hangup REQ requested on unconfigured channel %d/%d span %d\n", 
                                                PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        chanpos = pri_fixup_principle(pri, chanpos, e->hangup.call);
                                        if (chanpos > -1) {
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
@@ -9059,9 +9045,7 @@ static void *pri_dchannel(void *vpri)
                                if (chanpos < 0) {
                                        ast_log(LOG_WARNING, "Hangup ACK requested on unconfigured channel number %d/%d span %d\n", 
                                                PRI_SPAN(e->hangup.channel), PRI_CHANNEL(e->hangup.channel), pri->span);
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        chanpos = pri_fixup_principle(pri, chanpos, e->hangup.call);
                                        if (chanpos > -1) {
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
@@ -9118,9 +9102,7 @@ static void *pri_dchannel(void *vpri)
                                                ast_log(LOG_WARNING, "Restart ACK requested on strange channel %d/%d span %d\n", 
                                                        PRI_SPAN(e->restartack.channel), PRI_CHANNEL(e->restartack.channel), pri->span);
                                        }
-                                       chanpos = -1;
-                               }
-                               if (chanpos > -1) {
+                               } else {
                                        if (pri->pvts[chanpos]) {
                                                ast_mutex_lock(&pri->pvts[chanpos]->lock);
                                                if (pri->pvts[chanpos]->realcall)