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PNPBIOS: check return value of pnp_add_device() 

pnp_add_device() may fail so we need to handle errors and avoid leaking
memory.

Also, when pnp_alloc_dev fails, return -ENOMEM rather than -1.

Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Dmitry Torokhov 2014-01-07 00:16:37 +01:00 committed by Rafael J. Wysocki
parent 62c6dae02d
commit d8254e0e72
1 changed files with 9 additions and 3 deletions
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12
drivers/pnp/pnpbios/core.c
View File

@ -312,18 +312,19 @@ static int __init insert_device(struct pnp_bios_node *node)
struct list_head *pos;
struct pnp_dev *dev;
char id[8];
int error;
/* check if the device is already added */
list_for_each(pos, &pnpbios_protocol.devices) {
dev = list_entry(pos, struct pnp_dev, protocol_list);
if (dev->number == node->handle)
return -1;
return -EEXIST;
}
pnp_eisa_id_to_string(node->eisa_id & PNP_EISA_ID_MASK, id);
dev = pnp_alloc_dev(&pnpbios_protocol, node->handle, id);
if (!dev)
return -1;
return -ENOMEM;
pnpbios_parse_data_stream(dev, node);
dev->active = pnp_is_active(dev);
@ -342,7 +343,12 @@ static int __init insert_device(struct pnp_bios_node *node)
if (!dev->active)
pnp_init_resources(dev);
pnp_add_device(dev);
error = pnp_add_device(dev);
if (error) {
put_device(&dev->dev);
return error;
}
pnpbios_interface_attach_device(node);
return 0;