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| author |   Linyu Yuan <quic_linyyuan@quicinc.com> | 2021-10-19 21:26:34 +0800 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-22 11:17:15 +0200 |
| commit | 260d88b79c9f9c9d9cda10aad9c9b8486ddcf56a (patch) | |
| tree | 7fa922eb50cade0f6e434ac34298febbe22cae9e | |
| parent | usb: dwc3: Align DWC3_EP_* flag macros (diff) | |
| download | linux-dev-260d88b79c9f9c9d9cda10aad9c9b8486ddcf56a.tar.xz linux-dev-260d88b79c9f9c9d9cda10aad9c9b8486ddcf56a.zip | |
usb: gadget: configfs: add cfg_to_gadget_info() helper
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>
| -rw-r--r-- | drivers/usb/gadget/configfs.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/drivers/usb/gadget/configfs.c b/drivers/usb/gadget/configfs.c index 477e72a1d11e..58615dc9aaaf 100644 --- a/drivers/usb/gadget/configfs.c +++ b/drivers/usb/gadget/configfs.c @@ -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, |