cnic: Do not call bnx2i when bnx2i is calling cnic_unregister_driver()
We should call bnx2i to send the iSCSI netlink message earlier in
cnic_unregister_device(). By the time cnic_unregister_driver() is
called, bnx2i may have freed data structures used by the upcalls.
Update version to 2.2.12.
Reviewed-by: Benjamin Li <benli@broadcom.com>
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/cnic.c b/drivers/net/cnic.c
index 41957fa..6dfa564 100644
--- a/drivers/net/cnic.c
+++ b/drivers/net/cnic.c
@@ -426,19 +426,6 @@
return 0;
}
-static void cnic_uio_stop(void)
-{
- struct cnic_dev *dev;
-
- read_lock(&cnic_dev_lock);
- list_for_each_entry(dev, &cnic_dev_list, list) {
- struct cnic_local *cp = dev->cnic_priv;
-
- cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
- }
- read_unlock(&cnic_dev_lock);
-}
-
int cnic_register_driver(int ulp_type, struct cnic_ulp_ops *ulp_ops)
{
struct cnic_dev *dev;
@@ -510,9 +497,6 @@
}
read_unlock(&cnic_dev_lock);
- if (ulp_type == CNIC_ULP_ISCSI)
- cnic_uio_stop();
-
rcu_assign_pointer(cnic_ulp_tbl[ulp_type], NULL);
mutex_unlock(&cnic_lock);
@@ -596,6 +580,9 @@
}
mutex_unlock(&cnic_lock);
+ if (ulp_type == CNIC_ULP_ISCSI)
+ cnic_send_nlmsg(cp, ISCSI_KEVENT_IF_DOWN, NULL);
+
synchronize_rcu();
while (test_bit(ULP_F_CALL_PENDING, &cp->ulp_flags[ulp_type]) &&