ensure revents fields are initialized before calling poll()

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6476 65c4cc65-6c06-0410-ace0-fbb531ad65f3

asterisk.c

@@ -436,8 +436,10 @@ static void *netconsole(void *vconsole)
 	for(;;) {
 		fds[0].fd = con->fd;
 		fds[0].events = POLLIN;
+		fds[0].revents = 0;
 		fds[1].fd = con->p[0];
 		fds[1].events = POLLIN;
+		fds[1].revents = 0;
 
 		res = poll(fds, 2, -1);
 		if (res < 0) {

channel.c

@@ -1246,6 +1246,7 @@ struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds,
 			if (c[x]->fds[y] > -1) {
 				pfds[max].fd = c[x]->fds[y];
 				pfds[max].events = POLLIN | POLLPRI;
+				pfds[max].revents = 0;
 				max++;
 			}
 		}
@@ -1255,6 +1256,7 @@ struct ast_channel *ast_waitfor_nandfds(struct ast_channel **c, int n, int *fds,
 		if (fds[x] > -1) {
 			pfds[max].fd = fds[x];
 			pfds[max].events = POLLIN | POLLPRI;
+			pfds[max].revents = 0;
 			max++;
 		}
 	}

channels/chan_zap.c

@@ -2645,6 +2645,7 @@ int	x;
 					size = READ_SIZE;
 				fds[0].fd = fd;
 				fds[0].events = POLLPRI | POLLOUT;
+				fds[0].revents = 0;
 				res = poll(fds, 1, -1);
 				if (!res) {
 					ast_log(LOG_DEBUG, "poll (for write) ret. 0 on channel %d\n", p->channel);
@@ -6271,6 +6272,7 @@ static void *do_monitor(void *data)
 					/* This needs to be watched, as it lacks an owner */
 					pfds[count].fd = i->subs[SUB_REAL].zfd;
 					pfds[count].events = POLLPRI;
+					pfds[count].revents = 0;
 					/* Message waiting or r2 channels also get watched for reading */
 #ifdef ZAPATA_R2
 					if (i->cidspill || i->r2)
@@ -7831,6 +7833,7 @@ static void *pri_dchannel(void *vpri)
 				break;
 			fds[i].fd = pri->fds[i];
 			fds[i].events = POLLIN | POLLPRI;
+			fds[i].revents = 0;
 		}
 		numdchans = i;
 		time(&t);
@@ -10785,6 +10788,7 @@ static int zt_sendtext(struct ast_channel *c, const char *text)
 			size = READ_SIZE;
 		fds[0].fd = fd;
 		fds[0].events = POLLOUT | POLLPRI;
+		fds[0].revents = 0;
 		res = poll(fds, 1, -1);
 		if (!res) {
 			ast_log(LOG_DEBUG, "poll (for write) ret. 0 on channel %d\n", p->channel);

io.c

@@ -165,6 +165,7 @@ int *ast_io_add(struct io_context *ioc, int fd, ast_io_cb callback, short events
 	 */
 	ioc->fds[ioc->fdcnt].fd = fd;
 	ioc->fds[ioc->fdcnt].events = events;
+	ioc->fds[ioc->fdcnt].revents = 0;
 	ioc->ior[ioc->fdcnt].callback = callback;
 	ioc->ior[ioc->fdcnt].data = data;
 	ioc->ior[ioc->fdcnt].id = (int *)malloc(sizeof(int));