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[IB] fail SA queries if device initialization failed 

If the SA query module's initialization fails for a device, then that
device won't have a struct ib_sa_device associated.  We should fail SA
queries in that case, rather than blindly dereferencing the NULL
pointer we get back from ib_get_client_data().

Signed-off-by: Roland Dreier <rolandd@cisco.com>
This commit is contained in:
Roland Dreier 2005-10-13 10:45:02 -07:00
Родитель 305a7e8705
Коммит 56c202d6e4
1 изменённых файлов: 24 добавлений и 6 удалений
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30
drivers/infiniband/core/sa_query.c
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@ -583,10 +583,16 @@ int ib_sa_path_rec_get(struct ib_device *device, u8 port_num,
{
struct ib_sa_path_query *query;
struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client);
struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port];
struct ib_mad_agent *agent = port->agent;
struct ib_sa_port *port;
struct ib_mad_agent *agent;
int ret;
if (!sa_dev)
return -ENODEV;
port = &sa_dev->port[port_num - sa_dev->start_port];
agent = port->agent;
query = kmalloc(sizeof *query, gfp_mask);
if (!query)
return -ENOMEM;
@ -685,10 +691,16 @@ int ib_sa_service_rec_query(struct ib_device *device, u8 port_num, u8 method,
{
struct ib_sa_service_query *query;
struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client);
struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port];
struct ib_mad_agent *agent = port->agent;
struct ib_sa_port *port;
struct ib_mad_agent *agent;
int ret;
if (!sa_dev)
return -ENODEV;
port = &sa_dev->port[port_num - sa_dev->start_port];
agent = port->agent;
if (method != IB_MGMT_METHOD_GET &&
method != IB_MGMT_METHOD_SET &&
method != IB_SA_METHOD_DELETE)
@ -768,10 +780,16 @@ int ib_sa_mcmember_rec_query(struct ib_device *device, u8 port_num,
{
struct ib_sa_mcmember_query *query;
struct ib_sa_device *sa_dev = ib_get_client_data(device, &sa_client);
struct ib_sa_port *port = &sa_dev->port[port_num - sa_dev->start_port];
struct ib_mad_agent *agent = port->agent;
struct ib_sa_port *port;
struct ib_mad_agent *agent;
int ret;
if (!sa_dev)
return -ENODEV;
port = &sa_dev->port[port_num - sa_dev->start_port];
agent = port->agent;
query = kmalloc(sizeof *query, gfp_mask);
if (!query)
return -ENOMEM;