diff options
Diffstat (limited to 'drivers/extcon')
-rw-r--r-- | drivers/extcon/extcon.c | 61 |
1 files changed, 39 insertions, 22 deletions
diff --git a/drivers/extcon/extcon.c b/drivers/extcon/extcon.c index 3188b0e8c6d9..3997b39680b7 100644 --- a/drivers/extcon/extcon.c +++ b/drivers/extcon/extcon.c @@ -1188,6 +1188,42 @@ static int extcon_alloc_muex(struct extcon_dev *edev) } /** + * extcon_alloc_groups() - alloc the groups for extcon device + * @edev: extcon device + * + * Returns 0 if success or error number if fail. + */ +static int extcon_alloc_groups(struct extcon_dev *edev) +{ + int index; + + if (!edev) + return -EINVAL; + + if (!edev->max_supported) + return 0; + + edev->extcon_dev_type.groups = kcalloc(edev->max_supported + 2, + sizeof(struct attribute_group *), + GFP_KERNEL); + if (!edev->extcon_dev_type.groups) + return -ENOMEM; + + edev->extcon_dev_type.name = dev_name(&edev->dev); + edev->extcon_dev_type.release = dummy_sysfs_dev_release; + + for (index = 0; index < edev->max_supported; index++) + edev->extcon_dev_type.groups[index] = &edev->cables[index].attr_g; + + if (edev->mutually_exclusive) + edev->extcon_dev_type.groups[index] = &edev->attr_g_muex; + + edev->dev.type = &edev->extcon_dev_type; + + return 0; +} + +/** * extcon_dev_register() - Register an new extcon device * @edev: the extcon device to be registered * @@ -1242,28 +1278,9 @@ int extcon_dev_register(struct extcon_dev *edev) if (ret < 0) goto err_alloc_muex; - if (edev->max_supported) { - edev->extcon_dev_type.groups = - kcalloc(edev->max_supported + 2, - sizeof(struct attribute_group *), - GFP_KERNEL); - if (!edev->extcon_dev_type.groups) { - ret = -ENOMEM; - goto err_alloc_groups; - } - - edev->extcon_dev_type.name = dev_name(&edev->dev); - edev->extcon_dev_type.release = dummy_sysfs_dev_release; - - for (index = 0; index < edev->max_supported; index++) - edev->extcon_dev_type.groups[index] = - &edev->cables[index].attr_g; - if (edev->mutually_exclusive) - edev->extcon_dev_type.groups[index] = - &edev->attr_g_muex; - - edev->dev.type = &edev->extcon_dev_type; - } + ret = extcon_alloc_groups(edev); + if (ret < 0) + goto err_alloc_groups; spin_lock_init(&edev->lock); if (edev->max_supported) { |