diff options
Diffstat (limited to 'drivers/usb/gadget/function/u_ether_configfs.h')
| -rw-r--r-- | drivers/usb/gadget/function/u_ether_configfs.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/usb/gadget/function/u_ether_configfs.h b/drivers/usb/gadget/function/u_ether_configfs.h index bd92b5703013..3dfb460908fa 100644 --- a/drivers/usb/gadget/function/u_ether_configfs.h +++ b/drivers/usb/gadget/function/u_ether_configfs.h @@ -148,7 +148,20 @@ out: \ return ret; \ } \ \ - CONFIGFS_ATTR_RO(_f_##_opts_, ifname) + static ssize_t _f_##_opts_ifname_store(struct config_item *item, \ + const char *page, size_t len)\ + { \ + struct f_##_f_##_opts *opts = to_f_##_f_##_opts(item); \ + int ret = -EBUSY; \ + \ + mutex_lock(&opts->lock); \ + if (!opts->refcnt) \ + ret = gether_set_ifname(opts->net, page, len); \ + mutex_unlock(&opts->lock); \ + return ret ?: len; \ + } \ + \ + CONFIGFS_ATTR(_f_##_opts_, ifname) #define USB_ETHER_CONFIGFS_ITEM_ATTR_U8_RW(_f_, _n_) \ static ssize_t _f_##_opts_##_n_##_show(struct config_item *item,\ |