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| author | Julian Wiedmann <jwi@linux.ibm.com> | 2019-08-12 08:06:52 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-10-31 17:20:50 +0100 |
| commit | a320412dbbb312ffa446954838fef5226ae001cc (patch) | |
| tree | dd932771cee45a3f55b6f60da152be14c4920f45 /drivers/s390 | |
| parent | 89d0180a60fcc5368eb2d92faeb1e012f8a591b3 (diff) | |
| download | lwn-a320412dbbb312ffa446954838fef5226ae001cc.tar.gz lwn-a320412dbbb312ffa446954838fef5226ae001cc.zip | |
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: Julian Wiedmann <jwi@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/s390')
| -rw-r--r-- | drivers/s390/cio/qdio.h | 12 |
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) |