[ammarfaizi2-block:google/android/kernel/common/android12-5.10 1/1] drivers/usb/gadget/function/f_accessory.c:1088:5: warning: no previous prototype for 'acc_ctrlrequest_composite'

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/ammarfaizi2/linux-block google/android/kernel/common/android12-5.10
head:   e12e360999d84e5e56952c6c027803f662567d76
commit: e12e360999d84e5e56952c6c027803f662567d76 [1/1] ANDROID: usb: f_accessory: Check buffer size when initialised via composite
config: arm-allyesconfig (https://download.01.org/0day-ci/archive/20230121/202301210440.Yozp98mc-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://github.com/ammarfaizi2/linux-block/commit/e12e360999d84e5e56952c6c027803f662567d76
        git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
        git fetch --no-tags ammarfaizi2-block google/android/kernel/common/android12-5.10
        git checkout e12e360999d84e5e56952c6c027803f662567d76
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm SHELL=/bin/bash drivers/usb/gadget/function/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   drivers/usb/gadget/function/f_accessory.c:975:5: warning: no previous prototype for 'acc_ctrlrequest' [-Wmissing-prototypes]
     975 | int acc_ctrlrequest(struct usb_composite_dev *cdev,
         |     ^~~~~~~~~~~~~~~
>> drivers/usb/gadget/function/f_accessory.c:1088:5: warning: no previous prototype for 'acc_ctrlrequest_composite' [-Wmissing-prototypes]
    1088 | int acc_ctrlrequest_composite(struct usb_composite_dev *cdev,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~~
   drivers/usb/gadget/function/f_accessory.c:1441:6: warning: no previous prototype for 'acc_disconnect' [-Wmissing-prototypes]
    1441 | void acc_disconnect(void)
         |      ^~~~~~~~~~~~~~
   drivers/usb/gadget/function/f_accessory.c:1546:5: warning: no previous prototype for 'acc_ctrlrequest_configfs' [-Wmissing-prototypes]
    1546 | int acc_ctrlrequest_configfs(struct usb_function *f,
         |     ^~~~~~~~~~~~~~~~~~~~~~~~


vim +/acc_ctrlrequest_composite +1088 drivers/usb/gadget/function/f_accessory.c

  1087	
> 1088	int acc_ctrlrequest_composite(struct usb_composite_dev *cdev,
  1089				      const struct usb_ctrlrequest *ctrl)
  1090	{
  1091		u16 w_length = le16_to_cpu(ctrl->wLength);
  1092	
  1093		if (w_length > USB_COMP_EP0_BUFSIZ) {
  1094			if (ctrl->bRequestType & USB_DIR_IN) {
  1095				/* Cast away the const, we are going to overwrite on purpose. */
  1096				__le16 *temp = (__le16 *)&ctrl->wLength;
  1097	
  1098				*temp = cpu_to_le16(USB_COMP_EP0_BUFSIZ);
  1099				w_length = USB_COMP_EP0_BUFSIZ;
  1100			} else {
  1101				return -EINVAL;
  1102			}
  1103		}
  1104		return acc_ctrlrequest(cdev, ctrl);
  1105	}
  1106	EXPORT_SYMBOL_GPL(acc_ctrlrequest_composite);
  1107	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests