Re: [PATCH net-next 10/11] net: marvell: prestera: add storm control (rate limiter) implementation

[kernel test robot <lkp@intel.com>]

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Hi Oleksandr,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on kselftest/next]
[also build test WARNING on net/master linus/master v5.13-rc6]
[cannot apply to net-next/master sparc-next/master next-20210615]
[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/Oleksandr-Mazur/Marvell-Prestera-driver-implementation-of-devlink-functionality/20210616-112917
base:   https://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest.git next
config: arc-allyesconfig (attached as .config)
compiler: arceb-elf-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/d1e2db61850ee143f7aa180d34efb413f0956abd
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Oleksandr-Mazur/Marvell-Prestera-driver-implementation-of-devlink-functionality/20210616-112917
        git checkout d1e2db61850ee143f7aa180d34efb413f0956abd
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc 

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

All warnings (new ones prefixed by >>):

   drivers/net/ethernet/marvell/prestera/prestera_devlink.c: In function 'prestera_devlink_port_param_set':
>> drivers/net/ethernet/marvell/prestera/prestera_devlink.c:693:26: warning: variable 'sw' set but not used [-Wunused-but-set-variable]
     693 |  struct prestera_switch *sw;
         |                          ^~
   drivers/net/ethernet/marvell/prestera/prestera_devlink.c: In function 'prestera_devlink_port_param_get':
   drivers/net/ethernet/marvell/prestera/prestera_devlink.c:736:26: warning: variable 'sw' set but not used [-Wunused-but-set-variable]
     736 |  struct prestera_switch *sw;
         |                          ^~


vim +/sw +693 drivers/net/ethernet/marvell/prestera/prestera_devlink.c

   686	
   687	static int prestera_devlink_port_param_set(struct devlink_port *dl_port, u32 id,
   688						   struct devlink_param_gset_ctx *ctx)
   689	{
   690		struct prestera_strom_control_cfg *cfg;
   691		u32 kbyte_per_sec_rate = ctx->val.vu32;
   692		struct prestera_port *port;
 > 693		struct prestera_switch *sw;
   694		u32 *param_to_set;
   695		u32 storm_type;
   696		int ret;
   697	
   698		port = container_of(dl_port, struct prestera_port, dl_port);
   699		sw = devlink_priv(dl_port->devlink);
   700		cfg = &port->storm_control;
   701	
   702		switch (id) {
   703		case PRESTERA_DEVLINK_PORT_PARAM_ID_BC_RATE:
   704			param_to_set = &cfg->bc_kbyte_per_sec_rate;
   705			storm_type = PRESTERA_PORT_STORM_CTL_TYPE_BC;
   706			break;
   707		case PRESTERA_DEVLINK_PORT_PARAM_ID_UC_UNK_RATE:
   708			param_to_set = &cfg->unk_uc_kbyte_per_sec_rate;
   709			storm_type = PRESTERA_PORT_STORM_CTL_TYPE_UC_UNK;
   710			break;
   711		case PRESTERA_DEVLINK_PORT_PARAM_ID_MC_RATE:
   712			param_to_set = &cfg->unreg_mc_kbyte_per_sec_rate;
   713			storm_type = PRESTERA_PORT_STORM_CTL_TYPE_MC;
   714			break;
   715		default:
   716			return -EINVAL;
   717		}
   718	
   719		if (kbyte_per_sec_rate != *param_to_set) {
   720			ret = prestera_hw_port_storm_control_cfg_set(port, storm_type,
   721								     kbyte_per_sec_rate);
   722			if (ret)
   723				return ret;
   724	
   725			*param_to_set = kbyte_per_sec_rate;
   726		}
   727	
   728		return 0;
   729	}
   730	

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

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