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s390/qdio: use QDIO_BUFNR()

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

Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Julian Wiedmann 2019-08-12 08:06:52 +02:00 committed by Vasily Gorbik
parent 89d0180a60
commit a320412dbb
1 changed files with 4 additions and 8 deletions
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12
drivers/s390/cio/qdio.h
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@ -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)