[NET]: Add some acquires/releases sparse annotations.
Add __acquires() and __releases() annotations to suppress some sparse
warnings.
example of warnings :
net/ipv4/udp.c:1555:14: warning: context imbalance in 'udp_seq_start' - wrong
count at exit
net/ipv4/udp.c:1571:13: warning: context imbalance in 'udp_seq_stop' -
unexpected unlock
Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index 82b1294..ab228d1 100644
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -2373,6 +2373,7 @@
}
static void *igmp6_mc_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(dev_base_lock)
{
read_lock(&dev_base_lock);
return igmp6_mc_get_idx(seq, *pos);
@@ -2387,6 +2388,7 @@
}
static void igmp6_mc_seq_stop(struct seq_file *seq, void *v)
+ __releases(dev_base_lock)
{
struct igmp6_mc_iter_state *state = igmp6_mc_seq_private(seq);
if (likely(state->idev != NULL)) {
@@ -2516,6 +2518,7 @@
}
static void *igmp6_mcf_seq_start(struct seq_file *seq, loff_t *pos)
+ __acquires(dev_base_lock)
{
read_lock(&dev_base_lock);
return *pos ? igmp6_mcf_get_idx(seq, *pos - 1) : SEQ_START_TOKEN;
@@ -2533,6 +2536,7 @@
}
static void igmp6_mcf_seq_stop(struct seq_file *seq, void *v)
+ __releases(dev_base_lock)
{
struct igmp6_mcf_iter_state *state = igmp6_mcf_seq_private(seq);
if (likely(state->im != NULL)) {