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Date: Fri, 23 Mar 2018 07:53:10 +0100
From: Jiri Pirko <jiri@resnulli.us>
To: David Ahern <dsahern@gmail.com>
Cc: kbuild test robot <fengguang.wu@intel.com>, kbuild-all@01.org,
        netdev@vger.kernel.org
Subject: Re: [net-next:master 304/314]
 drivers/net/ethernet/mellanox/mlxsw/spectrum.c:3878:8: error: too few
 arguments to function 'devlink_resource_register'
Message-ID: <20180323065310.GN2074@nanopsycho.orion>
References: <201803230852.Y4PG4qcn%fengguang.wu@intel.com>
 <42d94112-06fe-77ea-1eba-b0da591dda88@gmail.com>
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Fri, Mar 23, 2018 at 02:53:38AM CET, dsahern@gmail.com wrote:
>On 3/22/18 6:47 PM, kbuild test robot wrote:
>> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next.git master
>> head:   6686c459e1449a3ee5f3fd313b0a559ace7a700e
>> commit: 145307460ba9c11489807de7acd3f4c7395f60b7 [304/314] devlink: Remove top_hierarchy arg to devlink_resource_register
>> config: x86_64-randconfig-s1-03230751 (attached as .config)
>> compiler: gcc-6 (Debian 6.4.0-9) 6.4.0 20171026
>> reproduce:
>>         git checkout 145307460ba9c11489807de7acd3f4c7395f60b7
>>         # save the attached .config to linux build tree
>>         make ARCH=x86_64 
>> 
>> All error/warnings (new ones prefixed by >>):
>> 
>>    drivers/net/ethernet/mellanox/mlxsw/spectrum.c: In function 'mlxsw_sp_resources_register':
>>>> drivers/net/ethernet/mellanox/mlxsw/spectrum.c:3881:6: warning: passing argument 6 of 'devlink_resource_register' makes integer from pointer without a cast [-Wint-conversion]
>>          &kvd_size_params,
>>          ^
>>    In file included from drivers/net/ethernet/mellanox/mlxsw/core.h:47:0,
>>                     from drivers/net/ethernet/mellanox/mlxsw/spectrum.h:54,
>>                     from drivers/net/ethernet/mellanox/mlxsw/spectrum.c:64:
>>    include/net/devlink.h:560:1: note: expected 'u64 {aka long long unsigned int}' but argument is of type 'struct devlink_resource_size_params *'
>>     devlink_resource_register(struct devlink *devlink,
>>     ^~~~~~~~~~~~~~~~~~~~~~~~~
>
>I just did another full build (allmodconfig) on net-next and did not hit
>this error.

The "else branch" in "#if IS_ENABLED(CONFIG_NET_DEVLINK)" is the
problem:

static inline int
devlink_resource_register(struct devlink *devlink,
                          const char *resource_name,
                          bool top_hierarchy,
                          u64 resource_size,
                          u64 resource_id,
                          u64 parent_resource_id,
                          const struct devlink_resource_size_params *size_params,
                          const struct devlink_resource_ops *resource_ops)
{
        return 0;
}