134 	char *xbuff = NULL;  in sl_alloc_bufs()  local
159 	xbuff = kmalloc(len + 4, GFP_KERNEL);  in sl_alloc_bufs()
160 	if (xbuff == NULL)  in sl_alloc_bufs()
181 	xbuff = xchg(&sl->xbuff, xbuff);  in sl_alloc_bufs()
199 	kfree(xbuff);  in sl_alloc_bufs()
209 	kfree(xchg(&sl->xbuff, NULL));  in sl_free_bufs()
224 	unsigned char *xbuff, *rbuff;  local
238 	xbuff = kmalloc(len + 4, GFP_ATOMIC);
246 	if (xbuff == NULL || rbuff == NULL || cbuff == NULL)  {
248 	if (xbuff == NULL || rbuff == NULL)  {
263 	xbuff    = xchg(&sl->xbuff, xbuff);
270 			memcpy(sl->xbuff, sl->xhead, sl->xleft);
276 	sl->xhead = sl->xbuff;
296 	kfree(xbuff);
394 		count = slip_esc6(p, sl->xbuff, len);
397 		count = slip_esc(p, sl->xbuff, len);
408 	actual = sl->tty->ops->write(sl->tty, sl->xbuff, count);
413 	sl->xhead = sl->xbuff + actual;