linux-kernel - [PATCH] RDMA/cxgb3: remove redundant first assignement of sqp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20170911114231.22893-1-colin.king@canonical.com>
Date:   Mon, 11 Sep 2017 12:42:31 +0100
From:   Colin King <colin.king@...onical.com>
To:     Steve Wise <swise@...lsio.com>, Doug Ledford <dledford@...hat.com>,
        Sean Hefty <sean.hefty@...el.com>,
        Hal Rosenstock <hal.rosenstock@...il.com>,
        linux-rdma@...r.kernel.org
Cc:     kernel-janitors@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] RDMA/cxgb3: remove redundant first assignement of sqp

From: Colin Ian King <colin.king@...onical.com>

sqp is being initialised when it is being declared and then updated
a little later on making the first initialization redundant. Clean
this up by initializing ptr and sqp at their declaration.

Cleans up warning: "warning: Value stored to 'sqp' during its
initialization is never read"

Fixes: a58e58fafdff ("RDMA/cxgb3: Wrap the software send queue pointer as needed on flush")
Signed-off-by: Colin Ian King <colin.king@...onical.com>
---
 drivers/infiniband/hw/cxgb3/cxio_hal.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb3/cxio_hal.c b/drivers/infiniband/hw/cxgb3/cxio_hal.c
index 3eff6541bd6f..b42e81ab5fa8 100644
--- a/drivers/infiniband/hw/cxgb3/cxio_hal.c
+++ b/drivers/infiniband/hw/cxgb3/cxio_hal.c
@@ -404,12 +404,10 @@ static void insert_sq_cqe(struct t3_wq *wq, struct t3_cq *cq,
 
 int cxio_flush_sq(struct t3_wq *wq, struct t3_cq *cq, int count)
 {
-	__u32 ptr;
+	__u32 ptr = wq->sq_rptr + count;
 	int flushed = 0;
-	struct t3_swsq *sqp = wq->sq + Q_PTR2IDX(wq->sq_rptr, wq->sq_size_log2);
+	struct t3_swsq *sqp = wq->sq + Q_PTR2IDX(ptr, wq->sq_size_log2);
 
-	ptr = wq->sq_rptr + count;
-	sqp = wq->sq + Q_PTR2IDX(ptr, wq->sq_size_log2);
 	while (ptr != wq->sq_wptr) {
 		sqp->signaled = 0;
 		insert_sq_cqe(wq, cq, sqp);
-- 
2.14.1