ipmi: Properly release srcu locks on error conditions

When SRCU was added for handling hotplug, some error conditions
were not handled properly.

Signed-off-by: Corey Minyard <cminyard@mvista.com>

1 files changed, 25 insertions, 18 deletions

diff --git a/drivers/char/ipmi/ipmi_msghandler.c b/drivers/char/ipmi/ipmi_msghandler.c
index 606d561fe0e2..51832b8a2c62 100644
--- a/drivers/char/ipmi/ipmi_msghandler.c
+++ b/drivers/char/ipmi/ipmi_msghandler.c
@@ -1291,18 +1291,19 @@ int ipmi_set_my_address(struct ipmi_user *user,
                         unsigned int  channel,
                         unsigned char address)
 {
-        int index;
+        int index, rv = 0;
 
         user = acquire_ipmi_user(user, &index);
         if (!user)
                 return -ENODEV;
 
         if (channel >= IPMI_MAX_CHANNELS)
-                return -EINVAL;
-        user->intf->addrinfo[channel].address = address;
+                rv = -EINVAL;
+        else
+                user->intf->addrinfo[channel].address = address;
         release_ipmi_user(user, index);
 
-        return 0;
+        return rv;
 }
 EXPORT_SYMBOL(ipmi_set_my_address);
 
@@ -1310,18 +1311,19 @@ int ipmi_get_my_address(struct ipmi_user *user,
                         unsigned int  channel,
                         unsigned char *address)
 {
-        int index;
+        int index, rv = 0;
 
         user = acquire_ipmi_user(user, &index);
         if (!user)
                 return -ENODEV;
 
         if (channel >= IPMI_MAX_CHANNELS)
-                return -EINVAL;
-        *address = user->intf->addrinfo[channel].address;
+                rv = -EINVAL;
+        else
+                *address = user->intf->addrinfo[channel].address;
         release_ipmi_user(user, index);
 
-        return 0;
+        return rv;
 }
 EXPORT_SYMBOL(ipmi_get_my_address);
 
@@ -1329,15 +1331,16 @@ int ipmi_set_my_LUN(struct ipmi_user *user,
                     unsigned int  channel,
                     unsigned char LUN)
 {
-        int index;
+        int index, rv = 0;
 
         user = acquire_ipmi_user(user, &index);
         if (!user)
                 return -ENODEV;
 
         if (channel >= IPMI_MAX_CHANNELS)
-                return -EINVAL;
-        user->intf->addrinfo[channel].lun = LUN & 0x3;
+                rv = -EINVAL;
+        else
+                user->intf->addrinfo[channel].lun = LUN & 0x3;
         release_ipmi_user(user, index);
 
         return 0;
@@ -1348,18 +1351,19 @@ int ipmi_get_my_LUN(struct ipmi_user *user,
                     unsigned int  channel,
                     unsigned char *address)
 {
-        int index;
+        int index, rv = 0;
 
         user = acquire_ipmi_user(user, &index);
         if (!user)
                 return -ENODEV;
 
         if (channel >= IPMI_MAX_CHANNELS)
-                return -EINVAL;
-        *address = user->intf->addrinfo[channel].lun;
+                rv = -EINVAL;
+        else
+                *address = user->intf->addrinfo[channel].lun;
         release_ipmi_user(user, index);
 
-        return 0;
+        return rv;
 }
 EXPORT_SYMBOL(ipmi_get_my_LUN);
 
@@ -1540,8 +1544,10 @@ int ipmi_register_for_cmd(struct ipmi_user *user,
                 return -ENODEV;
 
         rcvr = kmalloc(sizeof(*rcvr), GFP_KERNEL);
-        if (!rcvr)
-                return -ENOMEM;
+        if (!rcvr) {
+                rv = -ENOMEM;
+                goto out_release;
+        }
         rcvr->cmd = cmd;
         rcvr->netfn = netfn;
         rcvr->chans = chans;
@@ -1559,10 +1565,11 @@ int ipmi_register_for_cmd(struct ipmi_user *user,
 
         list_add_rcu(&rcvr->link, &intf->cmd_rcvrs);
 
- out_unlock:
+out_unlock:
         mutex_unlock(&intf->cmd_rcvrs_mutex);
         if (rv)
                 kfree(rcvr);
+out_release:
         release_ipmi_user(user, index);
 
         return rv;