linux-kernel - [rcu:dev.2019.03.20b 54/83] drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:50:1: error: type defaults to 'int' in declaration of 'DEFINE

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Date:   Mon, 25 Mar 2019 02:34:27 +0800
From:   kbuild test robot <lkp@...el.com>
To:     "Paul E. McKenney" <paulmck@...ux.ibm.com>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org
Subject: [rcu:dev.2019.03.20b 54/83]
 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:50:1: error: type
 defaults to 'int' in declaration of 'DEFINE_SRCU'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2019.03.20b
head:   6d4434b4b4df791620743178e1419de882b44c7b
commit: eb89abcb30733e3a2343dda23cb6d81cc17c60b3 [54/83] rcu: Forbid DEFINE{,_STATIC}_SRCU() from modules
config: x86_64-randconfig-b0-03250021 (attached as .config)
compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
reproduce:
        git checkout eb89abcb30733e3a2343dda23cb6d81cc17c60b3
        # save the attached .config to linux build tree
        make ARCH=x86_64 

All errors (new ones prefixed by >>):

   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:50:1: warning: data definition has no type or storage class
    DEFINE_SRCU(kfd_processes_srcu);
    ^~~~~~~~~~~
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:50:1: error: type defaults to 'int' in declaration of 'DEFINE_SRCU' [-Werror=implicit-int]
   drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:50:1: warning: parameter names (without types) in function declaration
   cc1: some warnings being treated as errors

vim +50 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c

19f6d2a6 Oded Gabbay    2014-07-16  49  
64d1c3a4 Felix Kuehling 2017-12-08 @50  DEFINE_SRCU(kfd_processes_srcu);
19f6d2a6 Oded Gabbay    2014-07-16  51  

:::::: The code at line 50 was first introduced by commit
:::::: 64d1c3a43a6fb5cef32a085bc17cbbe31945a651 drm/amdkfd: Centralize IOMMUv2 code and make it conditional

:::::: TO: Felix Kuehling <Felix.Kuehling@....com>
:::::: CC: Oded Gabbay <oded.gabbay@...il.com>

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