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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-05-19 17:00:06 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-05-19 17:00:06 +1000
commit4c8440666b995f20604852b35dcfdbcc1d5931f1 (patch)
treeb3b6cd65ee275ba1adf9d2c050063f30ebbadb91 /drivers/tty/n_gsm.c
parent751e1f5099f1568444fe2485f2485ca541d4952e (diff)
parentc560bbceaf6b06e52f1ef20131b76a3fdc0a2c19 (diff)
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Merge branch 'merge' into next
Diffstat (limited to 'drivers/tty/n_gsm.c')
-rw-r--r--drivers/tty/n_gsm.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 47f8cdb207f1..74273e638c0d 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -1658,8 +1658,12 @@ static void gsm_queue(struct gsm_mux *gsm)
if ((gsm->control & ~PF) == UI)
gsm->fcs = gsm_fcs_add_block(gsm->fcs, gsm->buf, gsm->len);
- /* generate final CRC with received FCS */
- gsm->fcs = gsm_fcs_add(gsm->fcs, gsm->received_fcs);
+ if (gsm->encoding == 0){
+ /* WARNING: gsm->received_fcs is used for gsm->encoding = 0 only.
+ In this case it contain the last piece of data
+ required to generate final CRC */
+ gsm->fcs = gsm_fcs_add(gsm->fcs, gsm->received_fcs);
+ }
if (gsm->fcs != GOOD_FCS) {
gsm->bad_fcs++;
if (debug & 4)