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usb: gadget: configfs: add cfg_to_gadget_info() helper

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add this helper function can simplify code of
config_usb_cfg_link() and config_usb_cfg_unlink().

Signed-off-by: Linyu Yuan <quic_linyyuan@quicinc.com>
Link: https://lore.kernel.org/r/1634649997-28745-2-git-send-email-quic_linyyuan@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Linyu Yuan
2021-10-19 21:26:34 +08:00
committed by Greg Kroah-Hartman
parent d1a4683747
commit 260d88b79c
1 changed files with 7 additions and 4 deletions
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11
drivers/usb/gadget/configfs.c
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@@ -73,6 +73,11 @@ static inline struct config_usb_cfg *to_config_usb_cfg(struct config_item *item)
group);
}
static inline struct gadget_info *cfg_to_gadget_info(struct config_usb_cfg *cfg)
{
return container_of(cfg->c.cdev, struct gadget_info, cdev);
}
struct gadget_strings {
struct usb_gadget_strings stringtab_dev;
struct usb_string strings[USB_GADGET_FIRST_AVAIL_IDX];
@@ -413,8 +418,7 @@ static int config_usb_cfg_link(
struct config_item *usb_func_ci)
{
struct config_usb_cfg *cfg = to_config_usb_cfg(usb_cfg_ci);
struct usb_composite_dev *cdev = cfg->c.cdev;
struct gadget_info *gi = container_of(cdev, struct gadget_info, cdev);
struct gadget_info *gi = cfg_to_gadget_info(cfg);
struct config_group *group = to_config_group(usb_func_ci);
struct usb_function_instance *fi = container_of(group,
@@ -464,8 +468,7 @@ static void config_usb_cfg_unlink(
struct config_item *usb_func_ci)
{
struct config_usb_cfg *cfg = to_config_usb_cfg(usb_cfg_ci);
struct usb_composite_dev *cdev = cfg->c.cdev;
struct gadget_info *gi = container_of(cdev, struct gadget_info, cdev);
struct gadget_info *gi = cfg_to_gadget_info(cfg);
struct config_group *group = to_config_group(usb_func_ci);
struct usb_function_instance *fi = container_of(group,