static struct tty_driver *gsm_tty_driver;
+/* Save dlci open address */
+static int addr_open[256] = { 0 };
+/* Save dlci open count */
+static int addr_cnt;
/*
* This section of the driver logic implements the GSM encodings
* both the basic and the 'advanced'. Reliable transport is not
}
static void gsm_dlci_begin_close(struct gsm_dlci *dlci);
+static void gsm_dlci_close(struct gsm_dlci *dlci);
/**
* gsm_control_message - DLCI 0 control processing
{
u8 buf[1];
unsigned long flags;
+ struct gsm_dlci *dlci;
+ int i;
+ int address;
switch (command) {
case CMD_CLD: {
- struct gsm_dlci *dlci = gsm->dlci[0];
+ if (addr_cnt > 0) {
+ for (i = 0; i < addr_cnt; i++) {
+ address = addr_open[i];
+ dlci = gsm->dlci[address];
+ gsm_dlci_close(dlci);
+ addr_open[i] = 0;
+ }
+ }
/* Modem wishes to close down */
+ dlci = gsm->dlci[0];
if (dlci) {
dlci->dead = true;
gsm->dead = true;
- gsm_dlci_begin_close(dlci);
+ gsm_dlci_close(dlci);
+ addr_cnt = 0;
+ gsm_response(gsm, 0, UA|PF);
}
}
break;
struct gsm_dlci *dlci;
u8 cr;
int address;
+ int i, j, k, address_tmp;
/* We have to sneak a look at the packet body to do the FCS.
A somewhat layering violation in the spec */
else {
gsm_response(gsm, address, UA|PF);
gsm_dlci_open(dlci);
+ /* Save dlci open address */
+ if (address) {
+ addr_open[addr_cnt] = address;
+ addr_cnt++;
+ }
}
break;
case DISC|PF:
return;
}
/* Real close complete */
- gsm_response(gsm, address, UA|PF);
- gsm_dlci_close(dlci);
+ if (!address) {
+ if (addr_cnt > 0) {
+ for (i = 0; i < addr_cnt; i++) {
+ address = addr_open[i];
+ dlci = gsm->dlci[address];
+ gsm_dlci_close(dlci);
+ addr_open[i] = 0;
+ }
+ }
+ dlci = gsm->dlci[0];
+ gsm_dlci_close(dlci);
+ addr_cnt = 0;
+ gsm_response(gsm, 0, UA|PF);
+ } else {
+ gsm_response(gsm, address, UA|PF);
+ gsm_dlci_close(dlci);
+ /* clear dlci address */
+ for (j = 0; j < addr_cnt; j++) {
+ address_tmp = addr_open[j];
+ if (address_tmp == address) {
+ for (k = j; k < addr_cnt; k++)
+ addr_open[k] = addr_open[k+1];
+ addr_cnt--;
+ break;
+ }
+ }
+ }
break;
case UA|PF:
if (cr == 0 || dlci == NULL)