si: Fix range1024 encoding

f0 is currently set to arfcns[0] in range_enc_determine_range(),
while GSM 04.08 requires f0 to be ARFCN 0 in range1024 encoding.

This patch modifies range_enc_determine_range() to force f0 to be 0
if this encoding is used. This way the case distinction in
range_enc_filter_arfcns() is not longer necessary.

Sponsored-by: On-Waves ehf

1 files changed, 1 insertions, 1 deletions

diff --git a/openbsc/include/openbsc/arfcn_range_encode.h b/openbsc/include/openbsc/arfcn_range_encode.h
index 7a6fff000..bd85d6af4 100644
--- a/openbsc/include/openbsc/arfcn_range_encode.h
+++ b/openbsc/include/openbsc/arfcn_range_encode.h
@@ -16,7 +16,7 @@ enum {
 int range_enc_determine_range(const int *arfcns, int size, int *f0_out);
 int range_enc_arfcns(const int rng, const int *arfcns, int sze, int *out, int idx);
 int range_enc_find_index(const int rng, const int *arfcns, int size);
-int range_enc_filter_arfcns(const int rng, int *arfcns, const int sze, const int f0, int *f0_included);
+int range_enc_filter_arfcns(int *arfcns, const int sze, const int f0, int *f0_included);
 
 int range_enc_range128(uint8_t *chan_list, int f0, int *w);
 int range_enc_range256(uint8_t *chan_list, int f0, int *w);