linux-kernel - Re: [PATCH v2] Introduce MEN 16Z192-00 CAN controller driver

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Date:   Fri, 19 Jun 2020 20:18:26 +0800
From:   kernel test robot <lkp@...el.com>
To:     Abhijeet Badurkar <abhijeet.badurkar@...gon.com>,
        wg@...ndegger.com, mkl@...gutronix.de
Cc:     kbuild-all@...ts.01.org, clang-built-linux@...glegroups.com,
        linux-can@...r.kernel.org, linux-kernel@...r.kernel.org,
        andreas.geissler@...gon.com,
        Abhijeet Badurkar <abhijeet.badurkar@...gon.com>
Subject: Re: [PATCH v2] Introduce MEN 16Z192-00 CAN controller driver

Hi Abhijeet,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.8-rc1 next-20200618]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use  as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Abhijeet-Badurkar/Introduce-MEN-16Z192-00-CAN-controller-driver/20200619-161212
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 5e857ce6eae7ca21b2055cca4885545e29228fe2
config: x86_64-allyesconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 487ca07fcc75d52755c9fe2ee05bcb3b6eeeec44)
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 x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

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 >>, old ones prefixed by <<):

>> drivers/net/can/men_z192_can.c:704:6: warning: no previous prototype for function 'men_z192_set_can_state' [-Wmissing-prototypes]
void men_z192_set_can_state(struct net_device *ndev)
^
drivers/net/can/men_z192_can.c:704:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void men_z192_set_can_state(struct net_device *ndev)
^
static
1 warning generated.

vim +/men_z192_set_can_state +704 drivers/net/can/men_z192_can.c

   703	
 > 704	void men_z192_set_can_state(struct net_device *ndev)
   705	{
   706		struct men_z192 *priv = netdev_priv(ndev);
   707		struct men_z192_regs __iomem *regs = priv->regs;
   708		enum can_state rx_state, tx_state;
   709		u32 status;
   710	
   711		status = readl(&regs->rx_tx_sts);
   712	
   713		rx_state = bus_state_map[MEN_Z192_GET_RSTATE(status)];
   714		tx_state = bus_state_map[MEN_Z192_GET_TSTATE(status)];
   715	
   716		can_change_state(ndev, NULL, tx_state, rx_state);
   717	}
   718	

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

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