From: Joe Eykholt <jeykholt@xxxxxxxxx>
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@xxxxxxxxx>
Acked-by: Nicholas A. Bellinger <nab@xxxxxxxxxxxxxxx>
---
drivers/scsi/libfc/fc_exch.c | 14 ++++++++++++++
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 1f124c0..a3d6402 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 79d1c76..6d64e44 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.
--
To unsubscribe from this list: send the line "unsubscribe linux-scsi" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
