linux-kernel - Re: drivers/hid/i2c-hid/i2c-hid-core.c:867:4: warning: format specifies type 'unsigned short' but the argument has type 'int'

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Date:   Thu, 2 Dec 2021 08:26:21 +0800
From:   Rong Chen <rong.a.chen@...el.com>
To:     Doug Anderson <dianders@...omium.org>,
        kernel test robot <lkp@...el.com>
Cc:     llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
        linux-kernel@...r.kernel.org,
        Benjamin Tissoires <benjamin.tissoires@...hat.com>
Subject: Re: drivers/hid/i2c-hid/i2c-hid-core.c:867:4: warning: format
 specifies type 'unsigned short' but the argument has type 'int'


On 11/30/21 08:19, Doug Anderson wrote:
> <Beep> <Boop> <Bop> (translates as "Hello Mr. Robot"),
>
> On Thu, Nov 25, 2021 at 10:44 PM kernel test robot <lkp@...el.com> wrote:
>> Hi Douglas,
>>
>> First bad commit (maybe != root cause):
>>
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
>> head:   a4849f6000e29235a2707f22e39da6b897bb9543
>> commit: c1ed18c11bdb80eced208a61d40b1988f36a014f HID: i2c-hid: Introduce goodix-i2c-hid using i2c-hid core
>> date:   10 months ago
>> config: arm64-randconfig-r034-20211116 (https://download.01.org/0day-ci/archive/20211126/202111261447.lxHTeAhi-lkp@intel.com/config)
>> compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project fbe72e41b99dc7994daac300d208a955be3e4a0a)
>> 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 arm64 cross compiling tool for clang build
>>          # apt-get install binutils-aarch64-linux-gnu
>>          # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c1ed18c11bdb80eced208a61d40b1988f36a014f
>>          git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>>          git fetch --no-tags linus master
>>          git checkout c1ed18c11bdb80eced208a61d40b1988f36a014f
>>          # save the config file to linux build tree
>>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=arm64
>>
>> 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/hid/i2c-hid/i2c-hid-core.c:867:4: warning: format specifies type 'unsigned short' but the argument has type 'int' [-Wformat]
>>                             le16_to_cpu(hdesc->bcdVersion));
>>                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>     include/linux/dev_printk.h:112:32: note: expanded from macro 'dev_err'
>>             _dev_err(dev, dev_fmt(fmt), ##__VA_ARGS__)
>>                                   ~~~     ^~~~~~~~~~~
>>     include/linux/byteorder/generic.h:91:21: note: expanded from macro 'le16_to_cpu'
>>     #define le16_to_cpu __le16_to_cpu
>>                         ^
>>     include/uapi/linux/byteorder/big_endian.h:36:26: note: expanded from macro '__le16_to_cpu'
>>     #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
>>                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>>     include/uapi/linux/swab.h:105:2: note: expanded from macro '__swab16'
>>             (__builtin_constant_p((__u16)(x)) ?     \
>>             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> May I kindly point to the reply I gave to the same error last month
> when you mailed it out?
>
> https://lore.kernel.org/r/CAD=FV=WkUEkkkfGa+6QJSBvj8EgVrnGYYbd6RrC_5HdTue=mDw@mail.gmail.com/
>

Hi Doug,

Thanks for the feedback, we have added the warnings to our ignore list.

Best Regards,

Rong Chen