Re: [kbuild-all] Re: [linux-next:master 2262/4736] drivers/extcon/extcon-usbc-tusb320.c:19: warning: expecting prototype for drivers/extcon/extcon-tusb320.c(). Prototype was for TUSB320_REG8() instead

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On 9/6/2022 8:53 AM, Marek Vasut wrote:
On 9/5/22 04:54, Chen, Rong A wrote:


On 9/3/2022 10:31 PM, Marek Vasut wrote:
On 9/3/22 01:21, kernel test robot wrote:
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   e47eb90a0a9ae20b82635b9b99a8d0979b757ad8
commit: 822a6200734c94ccbfc9ae7acc5da5505b991515 [2262/4736] extcon: usbc-tusb320: Add USB TYPE-C support config: x86_64-randconfig-a003 (https://download.01.org/0day-ci/archive/20220903/202209030755.eB4SkwGE-lkp@xxxxxxxxx/config) compiler: clang version 14.0.6 (https://github.com/llvm/llvm-project f28c006a5895fc0e329fe15fead81e37457cb1d1)
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/next/linux-next.git/commit/?id=822a6200734c94ccbfc9ae7acc5da5505b991515          git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
         git fetch --no-tags linux-next master
         git checkout 822a6200734c94ccbfc9ae7acc5da5505b991515
         # save the config file
         mkdir build_dir && cp config build_dir/.config
         COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/extcon/

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

All warnings (new ones prefixed by >>):

drivers/extcon/extcon-usbc-tusb320.c:19: warning: expecting prototype for drivers/extcon/extcon-tusb320.c(). Prototype was for TUSB320_REG8() instead


vim +19 drivers/extcon/extcon-usbc-tusb320.c

     18
   > 19    #define TUSB320_REG8                0x8
     20    #define TUSB320_REG8_CURRENT_MODE_ADVERTISE    GENMASK(7, 6)
     21    #define TUSB320_REG8_CURRENT_MODE_ADVERTISE_USB    0x0
     22    #define TUSB320_REG8_CURRENT_MODE_ADVERTISE_15A    0x1
     23    #define TUSB320_REG8_CURRENT_MODE_ADVERTISE_30A    0x2
     24    #define TUSB320_REG8_CURRENT_MODE_DETECT    GENMASK(5, 4)
     25    #define TUSB320_REG8_CURRENT_MODE_DETECT_DEF    0x0
     26    #define TUSB320_REG8_CURRENT_MODE_DETECT_MED    0x1
     27    #define TUSB320_REG8_CURRENT_MODE_DETECT_ACC    0x2
     28    #define TUSB320_REG8_CURRENT_MODE_DETECT_HI    0x3
     29    #define TUSB320_REG8_ACCESSORY_CONNECTED    GENMASK(3, 2)
     30    #define TUSB320_REG8_ACCESSORY_CONNECTED_NONE    0x0
     31    #define TUSB320_REG8_ACCESSORY_CONNECTED_AUDIO    0x4
     32    #define TUSB320_REG8_ACCESSORY_CONNECTED_ACC    0x5
     33    #define TUSB320_REG8_ACCESSORY_CONNECTED_DEBUG    0x6
     34    #define TUSB320_REG8_ACTIVE_CABLE_DETECTION    BIT(0)
     35

I still believe this is a false positive, is it not ?

Hi Marek,

Thanks for your reply, the issue is not introduced by this commit, it
should be related to '/**' in the head of this file:

diff --git a/drivers/extcon/extcon-usbc-tusb320.c b/drivers/extcon/extcon-usbc-tusb320.c
index edb8c3f997c9..41041ff0fadb 100644
--- a/drivers/extcon/extcon-usbc-tusb320.c
+++ b/drivers/extcon/extcon-usbc-tusb320.c
@@ -1,5 +1,5 @@
  // SPDX-License-Identifier: GPL-2.0
-/**
+/*
   * drivers/extcon/extcon-tusb320.c - TUSB320 extcon driver
   *
   * Copyright (C) 2020 National Instruments Corporation

Uh, OK, I wouldn't have thought of that based on the output above.

The change above is obviously correct, can you submit a patch ?

Hi Marek,

Thanks for the review, I have submitted it: https://lore.kernel.org/lkml/20220906040430.35896-1-rong.a.chen@xxxxxxxxx/T/#u

Best Regards,
Rong Chen


Thanks !
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