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| author | Joe Eykholt <jeykholt@cisco.com> | 2011-01-28 16:04:34 -0800 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-02-12 11:03:40 -0600 |
| commit | 62bdb6455e8326f864ae1b43b4c4db7f630edc1c (patch) | |
| tree | a802a76583670b42d7d36f69241e6bb31ff49b16 | |
| parent | 04885b16a1ec86b4670702b99a81805e66bf9f30 (diff) | |
| download | talos-op-linux-62bdb6455e8326f864ae1b43b4c4db7f630edc1c.tar.gz talos-op-linux-62bdb6455e8326f864ae1b43b4c4db7f630edc1c.zip | |
[SCSI] libfc: export seq_release() for users of seq_assign()
Target modules using lport->tt.seq_assign() get a hold on the
exchange but have no way of releasing it. Add that.
Signed-off-by: Joe Eykholt <jeykholt@cisco.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
| -rw-r--r-- | drivers/scsi/libfc/fc_exch.c | 14 | ||||
| -rw-r--r-- | include/scsi/libfc.h | 7 |
2 files changed, 21 insertions, 0 deletions
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c index 1f124c0351b4..a3d640289dcc 100644 --- a/drivers/scsi/libfc/fc_exch.c +++ b/drivers/scsi/libfc/fc_exch.c @@ -1282,6 +1282,8 @@ free: * @fp: The request frame * * On success, the sequence pointer will be returned and also in fr_seq(@fp). + * A reference will be held on the exchange/sequence for the caller, which + * must call fc_seq_release(). */ static struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp) { @@ -1299,6 +1301,15 @@ static struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp) } /** + * fc_seq_release() - Release the hold + * @sp: The sequence. + */ +static void fc_seq_release(struct fc_seq *sp) +{ + fc_exch_release(fc_seq_exch(sp)); +} + +/** * fc_exch_recv_req() - Handler for an incoming request * @lport: The local port that received the request * @mp: The EM that the exchange is on @@ -2369,6 +2380,9 @@ int fc_exch_init(struct fc_lport *lport) if (!lport->tt.seq_assign) lport->tt.seq_assign = fc_seq_assign; + if (!lport->tt.seq_release) + lport->tt.seq_release = fc_seq_release; + return 0; } EXPORT_SYMBOL(fc_exch_init); diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index 79d1c76b4269..6d64e44bc3bf 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -572,6 +572,13 @@ struct libfc_function_template { struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *); /* + * Release the reference on the sequence returned by seq_assign(). + * + * STATUS: OPTIONAL + */ + void (*seq_release)(struct fc_seq *); + + /* * Reset an exchange manager, completing all sequences and exchanges. * If s_id is non-zero, reset only exchanges originating from that FID. * If d_id is non-zero, reset only exchanges sending to that FID. |
