linux-kernel - Re: [PATCH] net/usb/r8153_ecm: support ECM mode for RTL8153

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Date:   Thu, 29 Oct 2020 23:04:51 +0800
From:   kernel test robot <lkp@...el.com>
To:     Hayes Wang <hayeswang@...ltek.com>, netdev@...r.kernel.org
Cc:     kbuild-all@...ts.01.org, nic_swsd@...ltek.com,
        linux-kernel@...r.kernel.org, Hayes Wang <hayeswang@...ltek.com>
Subject: Re: [PATCH] net/usb/r8153_ecm: support ECM mode for RTL8153

Hi Hayes,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on net/master]
[also build test WARNING on net-next/master ipvs/master linus/master v5.10-rc1 next-20201029]
[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/Hayes-Wang/net-usb-r8153_ecm-support-ECM-mode-for-RTL8153/20201029-203440
base:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git d6535dca28859d8d9ef80894eb287b2ac35a32e8
config: xtensa-allyesconfig (attached as .config)
compiler: xtensa-linux-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
        # https://github.com/0day-ci/linux/commit/e34498795de95fbccb0f2feee72cd8df723f9fd3
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Hayes-Wang/net-usb-r8153_ecm-support-ECM-mode-for-RTL8153/20201029-203440
        git checkout e34498795de95fbccb0f2feee72cd8df723f9fd3
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=xtensa 

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

All warnings (new ones prefixed by >>):

>> drivers/net/usb/r8152.c:6618:4: warning: no previous prototype for 'rtl8152_get_version' [-Wmissing-prototypes]
    6618 | u8 rtl8152_get_version(struct usb_interface *intf)
         |    ^~~~~~~~~~~~~~~~~~~

vim +/rtl8152_get_version +6618 drivers/net/usb/r8152.c

  6617	
> 6618	u8 rtl8152_get_version(struct usb_interface *intf)
  6619	{
  6620		struct usb_device *udev = interface_to_usbdev(intf);
  6621		u32 ocp_data = 0;
  6622		__le32 *tmp;
  6623		u8 version;
  6624		int ret;
  6625	
  6626		tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
  6627		if (!tmp)
  6628			return 0;
  6629	
  6630		ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
  6631				      RTL8152_REQ_GET_REGS, RTL8152_REQT_READ,
  6632				      PLA_TCR0, MCU_TYPE_PLA, tmp, sizeof(*tmp), 500);
  6633		if (ret > 0)
  6634			ocp_data = (__le32_to_cpu(*tmp) >> 16) & VERSION_MASK;
  6635	
  6636		kfree(tmp);
  6637	
  6638		switch (ocp_data) {
  6639		case 0x4c00:
  6640			version = RTL_VER_01;
  6641			break;
  6642		case 0x4c10:
  6643			version = RTL_VER_02;
  6644			break;
  6645		case 0x5c00:
  6646			version = RTL_VER_03;
  6647			break;
  6648		case 0x5c10:
  6649			version = RTL_VER_04;
  6650			break;
  6651		case 0x5c20:
  6652			version = RTL_VER_05;
  6653			break;
  6654		case 0x5c30:
  6655			version = RTL_VER_06;
  6656			break;
  6657		case 0x4800:
  6658			version = RTL_VER_07;
  6659			break;
  6660		case 0x6000:
  6661			version = RTL_VER_08;
  6662			break;
  6663		case 0x6010:
  6664			version = RTL_VER_09;
  6665			break;
  6666		default:
  6667			version = RTL_VER_UNKNOWN;
  6668			dev_info(&intf->dev, "Unknown version 0x%04x\n", ocp_data);
  6669			break;
  6670		}
  6671	
  6672		dev_dbg(&intf->dev, "Detected version 0x%04x\n", version);
  6673	
  6674		return version;
  6675	}
  6676	EXPORT_SYMBOL_GPL(rtl8152_get_version);
  6677	

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

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