net/ipv4/igmp.c: Replace rcu_dereference() with rcu_access_pointer()
The "rcu_dereference()" call is used directly in a condition. Since its return value is never dereferenced it is recommended to use "rcu_access_pointer()" instead of "rcu_dereference()". Therefore, this patch makes the replacement. The following Coccinelle semantic patch was used: @@ @@ ( if( (<+... - rcu_dereference + rcu_access_pointer (...) ...+>)) {...} | while( (<+... - rcu_dereference + rcu_access_pointer (...) ...+>)) {...} ) Signed-off-by: Andreea-Cristina Bernat <bernat.ada@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -2539,7 +2539,7 @@ static int igmp_mc_seq_show(struct seq_file *seq, void *v)
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querier = "NONE";
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#endif
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if (rcu_dereference(state->in_dev->mc_list) == im) {
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if (rcu_access_pointer(state->in_dev->mc_list) == im) {
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seq_printf(seq, "%d\t%-10s: %5d %7s\n",
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state->dev->ifindex, state->dev->name, state->in_dev->mc_count, querier);
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}
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