diff options
Diffstat (limited to 'drivers/scsi/libfc/fc_disc.c')
| -rw-r--r-- | drivers/scsi/libfc/fc_disc.c | 32 |
1 files changed, 11 insertions, 21 deletions
diff --git a/drivers/scsi/libfc/fc_disc.c b/drivers/scsi/libfc/fc_disc.c index 3f3569ec5ce3..6125df787200 100644 --- a/drivers/scsi/libfc/fc_disc.c +++ b/drivers/scsi/libfc/fc_disc.c @@ -59,9 +59,6 @@ static void fc_disc_restart(struct fc_disc *); /** * fc_disc_stop_rports() - Delete all the remote ports associated with the lport * @disc: The discovery job to stop remote ports on - * - * Locking Note: This function expects that the lport mutex is locked before - * calling it. */ static void fc_disc_stop_rports(struct fc_disc *disc) { @@ -69,6 +66,7 @@ static void fc_disc_stop_rports(struct fc_disc *disc) struct fc_rport_priv *rdata; lport = fc_disc_lport(disc); + lockdep_assert_held(&lport->lp_mutex); rcu_read_lock(); list_for_each_entry_rcu(rdata, &disc->rports, peers) { @@ -84,9 +82,6 @@ static void fc_disc_stop_rports(struct fc_disc *disc) * fc_disc_recv_rscn_req() - Handle Registered State Change Notification (RSCN) * @disc: The discovery object to which the RSCN applies * @fp: The RSCN frame - * - * Locking Note: This function expects that the disc_mutex is locked - * before it is called. */ static void fc_disc_recv_rscn_req(struct fc_disc *disc, struct fc_frame *fp) { @@ -101,6 +96,8 @@ static void fc_disc_recv_rscn_req(struct fc_disc *disc, struct fc_frame *fp) LIST_HEAD(disc_ports); struct fc_disc_port *dp, *next; + lockdep_assert_held(&disc->disc_mutex); + lport = fc_disc_lport(disc); FC_DISC_DBG(disc, "Received an RSCN event\n"); @@ -220,12 +217,11 @@ static void fc_disc_recv_req(struct fc_lport *lport, struct fc_frame *fp) /** * fc_disc_restart() - Restart discovery * @disc: The discovery object to be restarted - * - * Locking Note: This function expects that the disc mutex - * is already locked. */ static void fc_disc_restart(struct fc_disc *disc) { + lockdep_assert_held(&disc->disc_mutex); + if (!disc->disc_callback) return; @@ -271,16 +267,13 @@ static void fc_disc_start(void (*disc_callback)(struct fc_lport *, * fc_disc_done() - Discovery has been completed * @disc: The discovery context * @event: The discovery completion status - * - * Locking Note: This function expects that the disc mutex is locked before - * it is called. The discovery callback is then made with the lock released, - * and the lock is re-taken before returning from this function */ static void fc_disc_done(struct fc_disc *disc, enum fc_disc_event event) { struct fc_lport *lport = fc_disc_lport(disc); struct fc_rport_priv *rdata; + lockdep_assert_held(&disc->disc_mutex); FC_DISC_DBG(disc, "Discovery complete\n"); disc->pending = 0; @@ -360,15 +353,14 @@ static void fc_disc_error(struct fc_disc *disc, struct fc_frame *fp) /** * fc_disc_gpn_ft_req() - Send Get Port Names by FC-4 type (GPN_FT) request * @lport: The discovery context - * - * Locking Note: This function expects that the disc_mutex is locked - * before it is called. */ static void fc_disc_gpn_ft_req(struct fc_disc *disc) { struct fc_frame *fp; struct fc_lport *lport = fc_disc_lport(disc); + lockdep_assert_held(&disc->disc_mutex); + WARN_ON(!fc_lport_test_ready(lport)); disc->pending = 1; @@ -658,8 +650,6 @@ out: * @lport: The local port to initiate discovery on * @rdata: remote port private data * - * Locking Note: This function expects that the disc_mutex is locked - * before it is called. * On failure, an error code is returned. */ static int fc_disc_gpn_id_req(struct fc_lport *lport, @@ -667,6 +657,7 @@ static int fc_disc_gpn_id_req(struct fc_lport *lport, { struct fc_frame *fp; + lockdep_assert_held(&lport->disc.disc_mutex); fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + sizeof(struct fc_ns_fid)); if (!fp) @@ -683,14 +674,13 @@ static int fc_disc_gpn_id_req(struct fc_lport *lport, * fc_disc_single() - Discover the directory information for a single target * @lport: The local port the remote port is associated with * @dp: The port to rediscover - * - * Locking Note: This function expects that the disc_mutex is locked - * before it is called. */ static int fc_disc_single(struct fc_lport *lport, struct fc_disc_port *dp) { struct fc_rport_priv *rdata; + lockdep_assert_held(&lport->disc.disc_mutex); + rdata = fc_rport_create(lport, dp->port_id); if (!rdata) return -ENOMEM; |