Re: [PATCH] typec: Provide USB PD Specification Revision for cable and partner

[kernel test robot]

Hi Benson,

I love your patch! Yet something to improve:

[auto build test ERROR on usb/usb-testing]
[also build test ERROR on chrome-platform-linux/for-next linus/master v5.10-rc2 next-20201102]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Benson-Leung/typec-Provide-USB-PD-Specification-Revision-for-cable-and-partner/20201030-124250
base:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing
config: arm-randconfig-r033-20201030 (attached as .config)
compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project fa5a13276764a2657b3571fa3c57b07ee5d2d661)
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 arm cross compiling tool for clang build
        # apt-get install binutils-arm-linux-gnueabi
        # https://github.com/0day-ci/linux/commit/dca7134400af678fe4f5e4d94a7ec74487d9fcc1
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Benson-Leung/typec-Provide-USB-PD-Specification-Revision-for-cable-and-partner/20201030-124250
        git checkout dca7134400af678fe4f5e4d94a7ec74487d9fcc1
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm 

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

All errors (new ones prefixed by >>):

>> drivers/usb/typec/class.c:168:1: error: non-void function does not return a value in all control paths [-Werror,-Wreturn-type]
   }
   ^
   1 error generated.

vim +168 drivers/usb/typec/class.c

   150	
   151	static ssize_t usb_power_delivery_revision_show(struct device *dev,
   152							struct device_attribute *attr,
   153							char *buf)
   154	{
   155		if (is_typec_partner(dev)) {
   156			struct typec_partner *partner = to_typec_partner(dev);
   157	
   158			return sprintf(buf, "%d\n", (partner->pd_revision >> 8) & 0xff);
   159		} else if (is_typec_cable(dev)) {
   160			struct typec_cable *cable = to_typec_cable(dev);
   161	
   162			return sprintf(buf, "%d\n", (cable->pd_revision >> 8) & 0xff);
   163		} else if (is_typec_port(dev)) {
   164			struct typec_port *p = to_typec_port(dev);
   165	
   166			return sprintf(buf, "%d\n", (p->cap->pd_revision >> 8) & 0xff);
   167		}
 > 168	}
   169	static DEVICE_ATTR_RO(usb_power_delivery_revision);
   170	
   171	
   172	

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

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