157 static inline int hdlcdrv_hbuf_full(struct hdlcdrv_hdlcbuffer *hb)   in hdlcdrv_hbuf_full()  argument
162 	spin_lock_irqsave(&hb->lock, flags);  in hdlcdrv_hbuf_full()
163 	ret = !((HDLCDRV_HDLCBUFFER - 1 + hb->rd - hb->wr) % HDLCDRV_HDLCBUFFER);  in hdlcdrv_hbuf_full()
164 	spin_unlock_irqrestore(&hb->lock, flags);  in hdlcdrv_hbuf_full()
170 static inline int hdlcdrv_hbuf_empty(struct hdlcdrv_hdlcbuffer *hb)  in hdlcdrv_hbuf_empty()  argument
175 	spin_lock_irqsave(&hb->lock, flags);  in hdlcdrv_hbuf_empty()
176 	ret = (hb->rd == hb->wr);  in hdlcdrv_hbuf_empty()
177 	spin_unlock_irqrestore(&hb->lock, flags);  in hdlcdrv_hbuf_empty()
183 static inline unsigned short hdlcdrv_hbuf_get(struct hdlcdrv_hdlcbuffer *hb)  in hdlcdrv_hbuf_get()  argument
189 	spin_lock_irqsave(&hb->lock, flags);  in hdlcdrv_hbuf_get()
190 	if (hb->rd == hb->wr)  in hdlcdrv_hbuf_get()
193 		newr = (hb->rd+1) % HDLCDRV_HDLCBUFFER;  in hdlcdrv_hbuf_get()
194 		val = hb->buf[hb->rd];  in hdlcdrv_hbuf_get()
195 		hb->rd = newr;  in hdlcdrv_hbuf_get()
197 	spin_unlock_irqrestore(&hb->lock, flags);  in hdlcdrv_hbuf_get()
203 static inline void hdlcdrv_hbuf_put(struct hdlcdrv_hdlcbuffer *hb,   in hdlcdrv_hbuf_put()  argument
209 	spin_lock_irqsave(&hb->lock, flags);  in hdlcdrv_hbuf_put()
210 	newp = (hb->wr+1) % HDLCDRV_HDLCBUFFER;  in hdlcdrv_hbuf_put()
211 	if (newp != hb->rd) {   in hdlcdrv_hbuf_put()
212 		hb->buf[hb->wr] = val & 0xffff;  in hdlcdrv_hbuf_put()
213 		hb->wr = newp;  in hdlcdrv_hbuf_put()
215 	spin_unlock_irqrestore(&hb->lock, flags);  in hdlcdrv_hbuf_put()