linux-kernel - Re: [PATCH 1/2] powerpc/irq: bring back ksp

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Date:   Wed, 18 Sep 2019 06:36:13 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Christophe Leroy <christophe.leroy@....fr>
Cc:     kbuild-all@...org,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        segher@...nel.crashing.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [PATCH 1/2] powerpc/irq: bring back ksp_limit management in C
 functions.

Hi Christophe,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on linus/master]
[cannot apply to v5.3 next-20190916]
[if your patch is applied to the wrong git tree, please drop us a note to help improve the system]

url:    https://github.com/0day-ci/linux/commits/Christophe-Leroy/powerpc-irq-bring-back-ksp_limit-management-in-C-functions/20190918-042716
config: powerpc-iss476-smp_defconfig (attached as .config)
compiler: powerpc-linux-gcc (GCC) 7.4.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=7.4.0 make.cross ARCH=powerpc 

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

All errors (new ones prefixed by >>):

   In file included from arch/powerpc/include/asm/prom.h:15:0,
                    from arch/powerpc/sysdev/dcr.c:11:
   arch/powerpc/include/asm/irq.h: In function 'get_ksp_limit':
>> arch/powerpc/include/asm/irq.h:70:12: error: dereferencing pointer to incomplete type 'struct task_struct'
     return tsk->thread.ksp_limit;
               ^~

vim +70 arch/powerpc/include/asm/irq.h

    66	
    67	#ifdef CONFIG_PPC32
    68	static inline unsigned long get_ksp_limit(struct task_struct *tsk)
    69	{
  > 70		return tsk->thread.ksp_limit;
    71	}
    72	

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