diff mbox

[08/11] srp_transport: Fix attribute registration

Message ID dbcc2ab781fc513e8a880d028053020665765fd3.1353903448.git.dillowda@ornl.gov (mailing list archive)
State Accepted, archived
Headers show

Commit Message

David Dillow Nov. 26, 2012, 4:44 a.m. UTC 
From: Bart Van Assche <bvanassche@acm.org>

Register transport attributes after the attribute array has been
set up instead of before. The current code can trigger a race
condition because the code reading the attribute array can run
on another thread than the code that initialized that array.
Make sure that any code reading the attribute array will see all
values written into that array.

Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: David Dillow <dillowda@ornl.gov>
---
 drivers/scsi/scsi_transport_srp.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)
diff mbox

Patch

diff --git a/drivers/scsi/scsi_transport_srp.c b/drivers/scsi/scsi_transport_srp.c
index 21a045e..07c4394 100644
--- a/drivers/scsi/scsi_transport_srp.c
+++ b/drivers/scsi/scsi_transport_srp.c
@@ -324,13 +324,14 @@  srp_attach_transport(struct srp_function_template *ft)
 	i->rport_attr_cont.ac.attrs = &i->rport_attrs[0];
 	i->rport_attr_cont.ac.class = &srp_rport_class.class;
 	i->rport_attr_cont.ac.match = srp_rport_match;
-	transport_container_register(&i->rport_attr_cont);
 
 	count = 0;
 	SETUP_RPORT_ATTRIBUTE_RD(port_id);
 	SETUP_RPORT_ATTRIBUTE_RD(roles);
 	i->rport_attrs[count] = NULL;
 
+	transport_container_register(&i->rport_attr_cont);
+
 	i->f = ft;
 
 	return &i->t;