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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>
This commit is contained in:
Stefan Richter 2007-09-15 14:45:53 +02:00
parent 745647e7a2
commit 638d5bb816
1 changed files with 9 additions and 6 deletions
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15
drivers/ieee1394/nodemgr.c
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@ -1112,7 +1112,7 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent
{
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 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent
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 @@ static void nodemgr_process_root_directory(struct host_info *hi, struct node_ent
}
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");
}
}