staging/slicoss: Fix operation may be undefined warning

commit 6d1b80fd886937ad4d6169ffa78cb0075eebce53 upstream.

gcc complains about an undefined operation:
slicoss.c:1417:19: warning: operation on 'rspq->pageindex' may be
undefined [-Wsequence-point]

The intended operation was (probably) to retrieve the pageindex + 1 and let
it wrap around if it reaches the num_pages.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/staging/slicoss/slicoss.c b/drivers/staging/slicoss/slicoss.c
index 77a0751..f54057b 100644 (file)
--- a/drivers/staging/slicoss/slicoss.c
+++ b/drivers/staging/slicoss/slicoss.c
@@ -1490,7 +1490,7 @@ static struct slic_rspbuf *slic_rspqueue_getnext(struct adapter *adapter)
                slic_reg64_write(adapter, &adapter->slic_regs->slic_rbar64,
                        (rspq->paddr[rspq->pageindex] | SLIC_RSPQ_BUFSINPAGE),
                        &adapter->slic_regs->slic_addr_upper, 0, DONT_FLUSH);
-               rspq->pageindex = (++rspq->pageindex) % rspq->num_pages;
+               rspq->pageindex = (rspq->pageindex + 1) % rspq->num_pages;
                rspq->offset = 0;
                rspq->rspbuf = (struct slic_rspbuf *)
                                                rspq->vaddr[rspq->pageindex];