if (cpc_tty->num_open == 0) { /* first open of this tty */
if (!cpc_tty_area[port].buf_tx){
cpc_tty_area[port].buf_tx = kmalloc(CPC_TTY_MAX_MTU,GFP_KERNEL);
- if (cpc_tty_area[port].buf_tx == 0){
+ if (!cpc_tty_area[port].buf_tx) {
CPC_TTY_DBG("%s: error in memory allocation\n",cpc_tty->name);
return -ENOMEM;
}
for (j=0; j < CPC_TTY_NPORTS; j++) {
cpc_tty = &cpc_tty_area[port];
- if ((buf=cpc_tty->buf_rx.first) != 0) {
+ if ((buf=cpc_tty->buf_rx.first) != NULL) {
if (cpc_tty->tty) {
ld = tty_ldisc_ref(cpc_tty->tty);
if (ld) {
}
new = kmalloc(rx_len + sizeof(st_cpc_rx_buf), GFP_ATOMIC);
- if (new == 0) {
+ if (!new) {
cpc_tty_rx_disc_frame(pc300chan);
continue;
}
}
new->size = rx_len;
new->next = NULL;
- if (cpc_tty->buf_rx.first == 0) {
+ if (cpc_tty->buf_rx.first == NULL) {
cpc_tty->buf_rx.first = new;
cpc_tty->buf_rx.last = new;
} else {
CPC_TTY_DBG("%s: cpc_tty_tx_work init\n",cpc_tty->name);
- if ((tty = cpc_tty->tty) == 0) {
+ if ((tty = cpc_tty->tty) == NULL) {
CPC_TTY_DBG("%s: the interface is not opened\n",cpc_tty->name);
return;
}
ulong flags;
int res;
- if ((cpc_tty= (st_cpc_tty_area *) pc300dev->cpc_tty) == 0) {
+ if ((cpc_tty= (st_cpc_tty_area *) pc300dev->cpc_tty) == NULL) {
CPC_TTY_DBG("%s: interface is not TTY\n", pc300dev->dev->name);
return;
}