[chrome-platform-linux:for-kernelci 5/9] drivers/platform/chrome/cros_ec_typec.c:364:5: warning: no previous prototype for 'cros_typec_configure_mux'

[chrome-platform-linux:for-kernelci 5/9] drivers/platform/chrome/cros_ec_typec.c:364:5: warning: no previous prototype for 'cros_typec_configure_mux'

[kernel test robot]

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chrome-platform/linux.git for-kernelci
head:   565ffffee3366a1a9bc4fc040088f1b57bd6c6f9
commit: 7e7def15fa4bc9d6a2fa3d1d379286591c249381 [5/9] platform/chrome: cros_ec_typec: Add USB mux control
config: arc-allyesconfig (attached as .config)
compiler: arc-elf-gcc (GCC) 9.3.0
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
        git checkout 7e7def15fa4bc9d6a2fa3d1d379286591c249381
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> drivers/platform/chrome/cros_ec_typec.c:364:5: warning: no previous prototype for 'cros_typec_configure_mux' [-Wmissing-prototypes]
364 | int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
|     ^~~~~~~~~~~~~~~~~~~~~~~~

vim +/cros_typec_configure_mux +364 drivers/platform/chrome/cros_ec_typec.c

   363	
 > 364	int cros_typec_configure_mux(struct cros_typec_data *typec, int port_num,
   365				     uint8_t mux_flags)
   366	{
   367		struct cros_typec_port *port = typec->ports[port_num];
   368		enum typec_orientation orientation;
   369		int ret;
   370	
   371		if (!port->partner)
   372			return 0;
   373	
   374		if (mux_flags & USB_PD_MUX_POLARITY_INVERTED)
   375			orientation = TYPEC_ORIENTATION_REVERSE;
   376		else
   377			orientation = TYPEC_ORIENTATION_NORMAL;
   378	
   379		ret = typec_switch_set(port->ori_sw, orientation);
   380		if (ret)
   381			return ret;
   382	
   383		port->state.alt = NULL;
   384		port->state.mode = TYPEC_STATE_USB;
   385	
   386		if (mux_flags & USB_PD_MUX_SAFE_MODE)
   387			ret = cros_typec_usb_safe_state(port);
   388		else if (mux_flags & USB_PD_MUX_USB_ENABLED)
   389			ret = typec_mux_set(port->mux, &port->state);
   390		else {
   391			dev_info(typec->dev,
   392				 "Unsupported mode requested, mux flags: %x\n",
   393				 mux_flags);
   394			ret = -ENOTSUPP;
   395		}
   396	
   397		return ret;
   398	}
   399	

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

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