linux-kernel - [PATCH 2.6.26] RDMA/cxgb3: Wrap the software sq ptr as needed on flush.

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Date:	Fri, 09 May 2008 15:19:02 -0500
From:	Steve Wise <swise@...ngridcomputing.com>
To:	rdreier@...co.com
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	general@...ts.openfabrics.org
Subject: [PATCH 2.6.26] RDMA/cxgb3: Wrap the software sq ptr as needed on flush.


cxio_flush_sq() was failing to wrap around the sw-sq causing garbage
completion entries on a flush operation.

Signed-off-by: Steve Wise <swise@...ngridcomputing.com>
---

 drivers/infiniband/hw/cxgb3/cxio_hal.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.c b/drivers/infiniband/hw/cxgb3/cxio_hal.c
index 5fd8506..20a6326 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_hal.c
+++ b/drivers/infiniband/hw/cxgb3/cxio_hal.c
@@ -405,11 +405,11 @@ int cxio_flush_sq(struct t3_wq *wq, struct t3_cq *cq, int count)
 	struct t3_swsq *sqp = wq->sq + Q_PTR2IDX(wq->sq_rptr, wq->sq_size_log2);
 
 	ptr = wq->sq_rptr + count;
-	sqp += count;
+	sqp = wq->sq + Q_PTR2IDX(ptr, wq->sq_size_log2);
 	while (ptr != wq->sq_wptr) {
 		insert_sq_cqe(wq, cq, sqp);
-		sqp++;
 		ptr++;
+		sqp = wq->sq + Q_PTR2IDX(ptr, wq->sq_size_log2);
 		flushed++;
 	}
 	return flushed;
--
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