linux-kernel - drivers/platform/x86/hp/hp-wmi.c:551:24: warning: cast to smaller integer type 'enum hp_wmi

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Message-ID: <202212220511.b4rHatBj-lkp@intel.com>
Date:   Thu, 22 Dec 2022 05:33:13 +0800
From:   kernel test robot <lkp@...el.com>
To:     Jorge Lopez <jorge.lopez2@...com>
Cc:     llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
        linux-kernel@...r.kernel.org, Hans de Goede <hdegoede@...hat.com>
Subject: drivers/platform/x86/hp/hp-wmi.c:551:24: warning: cast to smaller
 integer type 'enum hp_wmi_radio' from 'void *'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   0a924817d2ed9396401e0557c6134276d2e26382
commit: 6e9b8992b122cb12688bd259fc99e67d1be234eb platform/x86: Move existing HP drivers to a new hp subdir
date:   5 weeks ago
config: x86_64-allyesconfig
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/torvalds/linux.git/commit/?id=6e9b8992b122cb12688bd259fc99e67d1be234eb
        git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
        git fetch --no-tags linus master
        git checkout 6e9b8992b122cb12688bd259fc99e67d1be234eb
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash drivers/platform/x86/hp/

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

All warnings (new ones prefixed by >>):

>> drivers/platform/x86/hp/hp-wmi.c:551:24: warning: cast to smaller integer type 'enum hp_wmi_radio' from 'void *' [-Wvoid-pointer-to-enum-cast]
           enum hp_wmi_radio r = (enum hp_wmi_radio) data;
                                 ^~~~~~~~~~~~~~~~~~~~~~~~
   1 warning generated.


vim +551 drivers/platform/x86/hp/hp-wmi.c

f82bdd0d77b6bf drivers/platform/x86/hp-wmi.c Kyle Evans           2014-06-09  548  
19d337dff95cbf drivers/platform/x86/hp-wmi.c Johannes Berg        2009-06-02  549  static int hp_wmi_set_block(void *data, bool blocked)
62ec30d45ecbb8 drivers/misc/hp-wmi.c         Matthew Garrett      2008-07-25  550  {
e5fbba85a7acc2 drivers/platform/x86/hp-wmi.c Alan Jenkins         2009-07-21 @551  	enum hp_wmi_radio r = (enum hp_wmi_radio) data;
e5fbba85a7acc2 drivers/platform/x86/hp-wmi.c Alan Jenkins         2009-07-21  552  	int query = BIT(r + 8) | ((!blocked) << r);
6d96e00cef3503 drivers/platform/x86/hp-wmi.c Thomas Renninger     2010-05-21  553  	int ret;
62ec30d45ecbb8 drivers/misc/hp-wmi.c         Matthew Garrett      2008-07-25  554  
d8193cff33906e drivers/platform/x86/hp-wmi.c Darren Hart (VMware  2017-04-19  555) 	ret = hp_wmi_perform_query(HPWMI_WIRELESS_QUERY, HPWMI_WRITE,
c3021ea1beeeb1 drivers/platform/x86/hp-wmi.c Anssi Hannula        2011-02-20  556  				   &query, sizeof(query), 0);
527376c89caf59 drivers/platform/x86/hp-wmi.c Darren Hart (VMware  2017-04-19  557) 
527376c89caf59 drivers/platform/x86/hp-wmi.c Darren Hart (VMware  2017-04-19  558) 	return ret <= 0 ? ret : -EINVAL;
62ec30d45ecbb8 drivers/misc/hp-wmi.c         Matthew Garrett      2008-07-25  559  }
62ec30d45ecbb8 drivers/misc/hp-wmi.c         Matthew Garrett      2008-07-25  560  

:::::: The code at line 551 was first introduced by commit
:::::: e5fbba85a7acc2626d4fe14501816811d702f3e9 hp-wmi: improve rfkill support

:::::: TO: Alan Jenkins <alan-jenkins@...fmail.co.uk>
:::::: CC: Len Brown <len.brown@...el.com>

-- 
0-DAY CI Kernel Test Service
https://01.org/lkp

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