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-rw-r--r--drivers/s390/cio/qdio.h12
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/s390/cio/qdio.h b/drivers/s390/cio/qdio.h
index a58b45df95d7..7ee29daf216e 100644
--- a/drivers/s390/cio/qdio.h
+++ b/drivers/s390/cio/qdio.h
@@ -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)