ieee1394: nodemgr: fix leak of struct csr1212_keyval
csr1212_keep_keyval(kv) in nodemgr_process_root_directory was
unbalanced if ne->vendor_name_kv already exists. This happens for
example if eth1394 or raw1394 modify the local config ROM and it is
parsed again.
As a bonus, the attempt to add the vendor_name_kv sysfs attribute
when it already exists is now fixed for good.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
diff --git a/drivers/ieee1394/nodemgr.c b/drivers/ieee1394/nodemgr.c
index 11712a3..ec8edd2f 100644
--- a/drivers/ieee1394/nodemgr.c
+++ b/drivers/ieee1394/nodemgr.c
@@ -1112,7 +1112,7 @@
{
unsigned int ud_id = 0;
struct csr1212_dentry *dentry;
- struct csr1212_keyval *kv;
+ struct csr1212_keyval *kv, *vendor_name_kv = NULL;
u8 last_key_id = 0;
ne->needs_probe = 0;
@@ -1139,8 +1139,8 @@
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_WIDTH(kv) == 0 &&
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_CHAR_SET(kv) == 0 &&
CSR1212_TEXTUAL_DESCRIPTOR_LEAF_LANGUAGE(kv) == 0) {
- ne->vendor_name_kv = kv;
csr1212_keep_keyval(kv);
+ vendor_name_kv = kv;
}
}
break;
@@ -1149,10 +1149,13 @@
}
if (ne->vendor_name_kv) {
- int error = device_create_file(&ne->device,
- &dev_attr_ne_vendor_name_kv);
-
- if (error && error != -EEXIST)
+ kv = ne->vendor_name_kv;
+ ne->vendor_name_kv = vendor_name_kv;
+ csr1212_release_keyval(kv);
+ } else if (vendor_name_kv) {
+ ne->vendor_name_kv = vendor_name_kv;
+ if (device_create_file(&ne->device,
+ &dev_attr_ne_vendor_name_kv) != 0)
HPSB_ERR("Failed to add sysfs attribute");
}
}
