[linux-dvb] [PATCH]Fix a bug in scan, which outputs the wrong frequency if the current tuned transponder is scanned only

[e9hack <e9hack@googlemail.com>]

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Hi,

if the current tuned transponder is scanned only and the output needs the frequency of the
transponder, it is used the last frequency, which is found during the NIT scanning. This
is wrong. The attached patch will fix this problem.

Regards,
Hartmut



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signed-off-by: Hartmut Birr <e9hack@googlemail.com>
diff -r afd0efc0f9d2 util/scan/scan.c
--- a/util/scan/scan.c	Mon Nov 10 16:32:50 2008 +0100
+++ b/util/scan/scan.c	Mon Nov 17 10:20:02 2008 +0100
@@ -221,8 +221,6 @@ static struct transponder *find_transpon
 
 	list_for_each(pos, &scanned_transponders) {
 		tp = list_entry(pos, struct transponder, list);
-		if (current_tp_only)
-			return tp;
 		if (is_same_transponder(tp->param.frequency, frequency))
 			return tp;
 	}
@@ -879,9 +877,10 @@ static void parse_nit (const unsigned ch
 		if (tn.type == fe_info.type) {
 			/* only add if develivery_descriptor matches FE type */
 			t = find_transponder(tn.param.frequency);
-			if (!t)
+			if (!t && !current_tp_only)
 				t = alloc_transponder(tn.param.frequency);
-			copy_transponder(t, &tn);
+			if (t)
+				copy_transponder(t, &tn);
 		}
 
 		section_length -= descriptors_loop_len + 6;
@@ -2284,7 +2283,10 @@ int main (int argc, char **argv)
 	signal(SIGINT, handle_sigint);
 
 	if (current_tp_only) {
-		current_tp = alloc_transponder(0); /* dummy */
+		struct dvb_frontend_parameters frontend_params;
+		if (ioctl(frontend_fd, FE_GET_FRONTEND, &frontend_params) < 0)
+			fatal("FE_GET_FRONTEND failed: %d %m\n", errno);
+		current_tp = alloc_transponder(frontend_params.frequency);
 		/* move TP from "new" to "scanned" list */
 		list_del_init(&current_tp->list);
 		list_add_tail(&current_tp->list, &scanned_transponders);

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