Commit a320412d authored by Julian Wiedmann's avatar Julian Wiedmann Committed by Vasily Gorbik
Browse files

s390/qdio: use QDIO_BUFNR() 



qdio.h recently gained a new helper macro that handles wrap-around on a
QDIO queue, use it.

Signed-off-by: default avatarJulian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 89d0180a

drivers/s390/cio/qdio.h

+4 −8
Original line number Diff line number Diff line
@@ -355,14 +355,10 @@ static inline int multicast_outbound(struct qdio_q *q) 
	for (i = 0; i < irq_ptr->nr_output_qs &&	\

		({ q = irq_ptr->output_qs[i]; 1; }); i++)



#define prev_buf(bufnr)	\

	((bufnr + QDIO_MAX_BUFFERS_MASK) & QDIO_MAX_BUFFERS_MASK)

#define next_buf(bufnr)	\

	((bufnr + 1) & QDIO_MAX_BUFFERS_MASK)

#define add_buf(bufnr, inc) \

	((bufnr + inc) & QDIO_MAX_BUFFERS_MASK)

#define sub_buf(bufnr, dec) \

	((bufnr - dec) & QDIO_MAX_BUFFERS_MASK)

#define add_buf(bufnr, inc)	QDIO_BUFNR((bufnr) + (inc))

#define next_buf(bufnr)		add_buf(bufnr, 1)

#define sub_buf(bufnr, dec)	QDIO_BUFNR((bufnr) - (dec))

#define prev_buf(bufnr)		sub_buf(bufnr, 1)



#define queue_irqs_enabled(q)			\

	(test_bit(QDIO_QUEUE_IRQS_DISABLED, &q->u.in.queue_irq_state) == 0)

CRA Git | Maintained and supported by SUSTech CRA and CCSE