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Message-ID: <202005280144.f9zYc3lN%lkp@intel.com>
Date:   Thu, 28 May 2020 01:25:31 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Mike Looijmans <mike.looijmans@...ic.nl>, linux-usb@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        gregkh@...uxfoundation.org, robh+dt@...nel.org, balbi@...nel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mike Looijmans <mike.looijmans@...ic.nl>
Subject: Re: [PATCH] usb/phy-generic: Add support for OTG VBUS supply control

Hi Mike,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on balbi-usb/testing/next]
[also build test WARNING on usb/usb-testing v5.7-rc7 next-20200526]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Mike-Looijmans/usb-phy-generic-Add-support-for-OTG-VBUS-supply-control/20200526-225304
base:   https://git.kernel.org/pub/scm/linux/kernel/git/balbi/usb.git testing/next
config: x86_64-randconfig-a016-20200527 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 3393cc4cebf9969db94dc424b7a2b6195589c33b)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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

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

>> drivers/usb/phy/phy-generic.c:234:1: warning: non-void function does not return a value in all control paths [-Wreturn-type]
}
^
1 warning generated.

vim +234 drivers/usb/phy/phy-generic.c

   205	
   206	static int nop_set_vbus(struct usb_otg *otg, bool enabled)
   207	{
   208		struct usb_phy_generic *nop;
   209		int ret;
   210	
   211		if (!otg)
   212			return -ENODEV;
   213	
   214		nop = container_of(otg->usb_phy, struct usb_phy_generic, phy);
   215	
   216		if (!nop->vbus_reg)
   217			return 0;
   218	
   219		if (enabled) {
   220			if (nop->vbus_reg_enabled)
   221				return 0;
   222			ret = regulator_enable(nop->vbus_reg);
   223			if (ret < 0)
   224				return ret;
   225			nop->vbus_reg_enabled = true;
   226		} else {
   227			if (!nop->vbus_reg_enabled)
   228				return 0;
   229			ret = regulator_disable(nop->vbus_reg);
   230			if (ret < 0)
   231				return ret;
   232			nop->vbus_reg_enabled = false;
   233		}
 > 234	}
   235	

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

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