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Commit 863555be authored by Mark Rustad's avatar Mark Rustad Committed by Nicholas Bellinger
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tcm_fc: Resolve suspicious RCU usage warnings 



Use rcu_dereference_protected to tell rcu that the ft_lport_lock
is held during ft_lport_create. This resolved "suspicious RCU usage"
warnings when debugging options are turned on.

Signed-off-by: default avatarMark Rustad <mark.d.rustad@intel.com>
Tested-by: default avatarRoss Brattain <ross.b.brattain@intel.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: default avatarNicholas Bellinger <nab@linux-iscsi.org>
parent 5134de28

drivers/target/tcm_fc/tfc_sess.c

+2 −1
Original line number Diff line number Diff line
@@ -58,7 +58,8 @@ static struct ft_tport *ft_tport_create(struct fc_lport *lport) 
	struct ft_tport *tport;

	int i;



	tport = rcu_dereference(lport->prov[FC_TYPE_FCP]);

	tport = rcu_dereference_protected(lport->prov[FC_TYPE_FCP],

					  lockdep_is_held(&ft_lport_lock));

	if (tport && tport->tpg)

		return tport;