[jic23-iio:testing 176/178] drivers/mux/core.c:391: warning: expecting prototype for mux_control_try_select(). Prototype was for mux_control_try_select_delay() instead

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git testing
head:   d6c96ec70b3ccc97eb0c6c794836a5c3340c9927
commit: 9a7254435c4fdb5ae424d9f40a48a7ded51b3367 [176/178] mux: add support for delay after muxing
config: i386-randconfig-a001-20211019 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b37efed957ed0a0193d80020aefd55cb587dfc1f)
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://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git/commit/?id=9a7254435c4fdb5ae424d9f40a48a7ded51b3367
        git remote add jic23-iio https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio.git
        git fetch --no-tags jic23-iio testing
        git checkout 9a7254435c4fdb5ae424d9f40a48a7ded51b3367
        # save the attached .config to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=i386 SHELL=/bin/bash drivers/mux/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> drivers/mux/core.c:391: warning: expecting prototype for mux_control_try_select(). Prototype was for mux_control_try_select_delay() instead


vim +391 drivers/mux/core.c

a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  372  
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  373  /**
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  374   * mux_control_try_select() - Try to select the given multiplexer state.
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  375   * @mux: The mux-control to request a change of state from.
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  376   * @state: The new requested state.
9a7254435c4fdb drivers/mux/core.c     Vincent Whitchurch 2021-10-07  377   * @delay_us: The time to delay (in microseconds) if the mux state is changed.
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  378   *
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  379   * On successfully selecting the mux-control state, it will be locked until
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  380   * mux_control_deselect() called.
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  381   *
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  382   * Therefore, make sure to call mux_control_deselect() when the operation is
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  383   * complete and the mux-control is free for others to use, but do not call
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  384   * mux_control_deselect() if mux_control_try_select() fails.
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  385   *
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  386   * Return: 0 when the mux-control state has the requested state or a negative
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  387   * errno on error. Specifically -EBUSY if the mux-control is contended.
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  388   */
9a7254435c4fdb drivers/mux/core.c     Vincent Whitchurch 2021-10-07  389  int mux_control_try_select_delay(struct mux_control *mux, unsigned int state,
9a7254435c4fdb drivers/mux/core.c     Vincent Whitchurch 2021-10-07  390  				 unsigned int delay_us)
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14 @391  {
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  392  	int ret;
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  393  
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  394  	if (down_trylock(&mux->lock))
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  395  		return -EBUSY;
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  396  
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  397  	ret = __mux_control_select(mux, state);
9a7254435c4fdb drivers/mux/core.c     Vincent Whitchurch 2021-10-07  398  	if (ret >= 0)
9a7254435c4fdb drivers/mux/core.c     Vincent Whitchurch 2021-10-07  399  		mux_control_delay(mux, delay_us);
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  400  
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  401  	if (ret < 0)
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  402  		up(&mux->lock);
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  403  
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  404  	return ret;
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  405  }
9a7254435c4fdb drivers/mux/core.c     Vincent Whitchurch 2021-10-07  406  EXPORT_SYMBOL_GPL(mux_control_try_select_delay);
a3b02a9c6591ce drivers/mux/mux-core.c Peter Rosin        2017-05-14  407  

:::::: The code at line 391 was first introduced by commit
:::::: a3b02a9c6591ce154cd44e2383406390a45b530c mux: minimal mux subsystem

:::::: TO: Peter Rosin <peda@xxxxxxxxxx>
:::::: CC: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx

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