[PATCH] net: macb: Remove redundant assignment to w0 and queue
Jiapeng Chong
jiapeng.chong at linux.alibaba.com
Wed Apr 28 11:03:08 BST 2021
Variable w0 and queue is set to zero and bp->queues but these
values is not used as it is overwritten later on, hence
redundant assignment can be removed.
Cleans up the following clang-analyzer warning:
drivers/net/ethernet/cadence/macb_main.c:4919:21: warning: Value stored
to 'queue' during its initialization is never read
[clang-analyzer-deadcode.DeadStores].
drivers/net/ethernet/cadence/macb_main.c:4832:21: warning: Value stored
to 'queue' during its initialization is never read
[clang-analyzer-deadcode.DeadStores].
drivers/net/ethernet/cadence/macb_main.c:3265:3: warning: Value stored
to 'w0' is never read [clang-analyzer-deadcode.DeadStores].
drivers/net/ethernet/cadence/macb_main.c:3251:3: warning: Value stored
to 'w0' is never read [clang-analyzer-deadcode.DeadStores].
Reported-by: Abaci Robot <abaci at linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong at linux.alibaba.com>
---
drivers/net/ethernet/cadence/macb_main.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c
index 0f6a6cb..5f1dbc2 100644
--- a/drivers/net/ethernet/cadence/macb_main.c
+++ b/drivers/net/ethernet/cadence/macb_main.c
@@ -3248,7 +3248,6 @@ static void gem_prog_cmp_regs(struct macb *bp, struct ethtool_rx_flow_spec *fs)
/* ignore field if any masking set */
if (tp4sp_m->ip4src == 0xFFFFFFFF) {
/* 1st compare reg - IP source address */
- w0 = 0;
w1 = 0;
w0 = tp4sp_v->ip4src;
w1 = GEM_BFINS(T2DISMSK, 1, w1); /* 32-bit compare */
@@ -3262,7 +3261,6 @@ static void gem_prog_cmp_regs(struct macb *bp, struct ethtool_rx_flow_spec *fs)
/* ignore field if any masking set */
if (tp4sp_m->ip4dst == 0xFFFFFFFF) {
/* 2nd compare reg - IP destination address */
- w0 = 0;
w1 = 0;
w0 = tp4sp_v->ip4dst;
w1 = GEM_BFINS(T2DISMSK, 1, w1); /* 32-bit compare */
@@ -4829,7 +4827,7 @@ static int __maybe_unused macb_suspend(struct device *dev)
{
struct net_device *netdev = dev_get_drvdata(dev);
struct macb *bp = netdev_priv(netdev);
- struct macb_queue *queue = bp->queues;
+ struct macb_queue *queue;
unsigned long flags;
unsigned int q;
int err;
@@ -4916,7 +4914,7 @@ static int __maybe_unused macb_resume(struct device *dev)
{
struct net_device *netdev = dev_get_drvdata(dev);
struct macb *bp = netdev_priv(netdev);
- struct macb_queue *queue = bp->queues;
+ struct macb_queue *queue;
unsigned long flags;
unsigned int q;
int err;
--
1.8.3.1
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