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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>
hifive-unleashed-5.1
Corey Minyard 2018-05-24 15:07:29 -05:00
parent 58aae18eb9
commit 048f7c3e35
1 changed files with 25 additions and 18 deletions
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43
drivers/char/ipmi/ipmi_msghandler.c
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@ -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;