xiaomi-sm8450/android_kernel_xiaomi_sm8450
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net: treewide use of RCU_INIT_POINTER

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rcu_assign_pointer(ptr, NULL) can be safely replaced by
RCU_INIT_POINTER(ptr, NULL)

(old rcu_assign_pointer() macro was testing the NULL value and could
omit the smp_wmb(), but this had to be removed because of compiler
warnings)

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2011-11-23 07:09:32 +00:00
committed by David S. Miller
parent 8c2152286a
commit 2cfa5a0471
9 changed files with 21 additions and 21 deletions
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2
drivers/net/ethernet/broadcom/bnx2.c
View File

@@ -409,7 +409,7 @@ static int bnx2_unregister_cnic(struct net_device *dev)
mutex_lock(&bp->cnic_lock);
cp->drv_state = 0;
bnapi->cnic_present = 0;
rcu_assign_pointer(bp->cnic_ops, NULL);
RCU_INIT_POINTER(bp->cnic_ops, NULL);
mutex_unlock(&bp->cnic_lock);
synchronize_rcu();
return 0;

2
drivers/net/ethernet/broadcom/bnx2x/bnx2x_main.c
View File

@@ -11587,7 +11587,7 @@ static int bnx2x_unregister_cnic(struct net_device *dev)
mutex_lock(&bp->cnic_mutex);
cp->drv_state = 0;
rcu_assign_pointer(bp->cnic_ops, NULL);
RCU_INIT_POINTER(bp->cnic_ops, NULL);
mutex_unlock(&bp->cnic_mutex);
synchronize_rcu();
kfree(bp->cnic_kwq);

6
drivers/net/ethernet/broadcom/cnic.c
View File

@@ -506,7 +506,7 @@ int cnic_unregister_driver(int ulp_type)
}
read_unlock(&cnic_dev_lock);
rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
RCU_INIT_POINTER(cnic_ulp_tbl[ulp_type], NULL);
mutex_unlock(&cnic_lock);
synchronize_rcu();
@@ -579,7 +579,7 @@ static int cnic_unregister_device(struct cnic_dev *dev, int ulp_type)
}
mutex_lock(&cnic_lock);
if (rcu_dereference(cp->ulp_ops[ulp_type])) {
rcu_assign_pointer(cp->ulp_ops[ulp_type], NULL);
RCU_INIT_POINTER(cp->ulp_ops[ulp_type], NULL);
cnic_put(dev);
} else {
pr_err("%s: device not registered to this ulp type %d\n",
@@ -5134,7 +5134,7 @@ static void cnic_stop_hw(struct cnic_dev *dev)
}
cnic_shutdown_rings(dev);
clear_bit(CNIC_F_CNIC_UP, &dev->flags);
rcu_assign_pointer(cp->ulp_ops[CNIC_ULP_L4], NULL);
RCU_INIT_POINTER(cp->ulp_ops[CNIC_ULP_L4], NULL);
synchronize_rcu();
cnic_cm_shutdown(dev);
cp->stop_hw(dev);