Merge branch 'staging-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh...

[pandora-kernel.git] / drivers / tty / n_gsm.c

diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 176f632..74273e6 100644 (file)
--- 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)
 {