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Diffstat (limited to 'drivers/tty/n_gsm.c')
-rw-r--r--drivers/tty/n_gsm.c18
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 176f63256b37..74273e638c0d 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/n_gsm.c
@@ -74,7 +74,7 @@ module_param(debug, int, 0600);
#endif
/*
- * Semi-arbitary buffer size limits. 0710 is normally run with 32-64 byte
+ * Semi-arbitrary buffer size limits. 0710 is normally run with 32-64 byte
* limits so this is plenty
*/
#define MAX_MRU 512
@@ -82,7 +82,7 @@ module_param(debug, int, 0600);
/*
* Each block of data we have queued to go out is in the form of
- * a gsm_msg which holds everything we need in a link layer independant
+ * a gsm_msg which holds everything we need in a link layer independent
* format
*/
@@ -1193,8 +1193,8 @@ static void gsm_control_message(struct gsm_mux *gsm, unsigned int command,
break;
/* Optional unsupported commands */
case CMD_PN: /* Parameter negotiation */
- case CMD_RPN: /* Remote port negotation */
- case CMD_SNC: /* Service negotation command */
+ case CMD_RPN: /* Remote port negotiation */
+ case CMD_SNC: /* Service negotiation command */
default:
/* Reply to bad commands with an NSC */
buf[0] = command;
@@ -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)
@@ -2026,7 +2030,7 @@ EXPORT_SYMBOL_GPL(gsm_activate_mux);
* @mux: mux to free
*
* Dispose of allocated resources for a dead mux. No refcounting
- * at present so the mux must be truely dead.
+ * at present so the mux must be truly dead.
*/
void gsm_free_mux(struct gsm_mux *gsm)
{