linux-kernel - [tip:WIP.sched/core 118/167] arch/sh/kernel/cpu/sh2a/fpu.c:559:1: note: in expansion of macro 'BUILD_TRAP

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Message-ID: <201702061806.nZrqX9Uq%fengguang.wu@intel.com>
Date:   Mon, 6 Feb 2017 18:19:11 +0800
From:   kbuild test robot <fengguang.wu@...el.com>
To:     Ingo Molnar <mingo@...nel.org>
Cc:     kbuild-all@...org, linux-kernel@...r.kernel.org, tipbuild@...or.com
Subject: [tip:WIP.sched/core 118/167] arch/sh/kernel/cpu/sh2a/fpu.c:559:1:
 note: in expansion of macro 'BUILD_TRAP_HANDLER'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git WIP.sched/core
head:   3cb464183709fc66902b262ce921cb5a410697d1
commit: d8c081caed34b16d17d639fa49889d2b7b22c9b0 [118/167] sched/headers: Remove <asm/ptrace.h> from <linux/sched.h>
config: sh-rsk7203_defconfig (attached as .config)
compiler: sh4-linux-gnu-gcc (Debian 6.1.1-9) 6.1.1 20160705
reproduce:
        wget https://git.kernel.org/cgit/linux/kernel/git/wfg/lkp-tests.git/plain/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout d8c081caed34b16d17d639fa49889d2b7b22c9b0
        # save the attached .config to linux build tree
        make.cross ARCH=sh 

All warnings (new ones prefixed by >>):

   In file included from arch/sh/kernel/cpu/sh2a/fpu.c:16:0:
   arch/sh/include/asm/fpu.h: In function 'release_fpu':
   arch/sh/include/asm/fpu.h:11:6: error: dereferencing pointer to incomplete type 'struct pt_regs'
     regs->sr |= SR_FD;
         ^~
   In file included from arch/sh/include/asm/traps.h:7:0,
                    from arch/sh/kernel/cpu/sh2a/fpu.c:17:
   arch/sh/kernel/cpu/sh2a/fpu.c: At top level:
   arch/sh/include/asm/traps_32.h:53:24: error: parameter 5 ('__regs') has incomplete type
            struct pt_regs __regs)
                           ^
>> arch/sh/kernel/cpu/sh2a/fpu.c:559:1: note: in expansion of macro 'BUILD_TRAP_HANDLER'
    BUILD_TRAP_HANDLER(fpu_error)
    ^~~~~~~~~~~~~~~~~~

vim +/BUILD_TRAP_HANDLER +559 arch/sh/kernel/cpu/sh2a/fpu.c

74d99a5e Paul Mundt    2007-11-26  543  			/* FPU error because of denormal */
74d99a5e Paul Mundt    2007-11-26  544  			if ((finsn & 0xf00f) == 0xf000)
74d99a5e Paul Mundt    2007-11-26  545  				hx = denormal_addf(hx, hy);
74d99a5e Paul Mundt    2007-11-26  546  			else
74d99a5e Paul Mundt    2007-11-26  547  				hx = denormal_addf(hx, hy ^ 0x80000000);
0ea820cf Paul Mundt    2010-01-13  548  			tsk->thread.xstate->hardfpu.fp_regs[n] = hx;
74d99a5e Paul Mundt    2007-11-26  549  		} else
74d99a5e Paul Mundt    2007-11-26  550  			return 0;
74d99a5e Paul Mundt    2007-11-26  551  
74d99a5e Paul Mundt    2007-11-26  552  		regs->pc = nextpc;
74d99a5e Paul Mundt    2007-11-26  553  		return 1;
74d99a5e Paul Mundt    2007-11-26  554  	}
74d99a5e Paul Mundt    2007-11-26  555  
74d99a5e Paul Mundt    2007-11-26  556  	return 0;
74d99a5e Paul Mundt    2007-11-26  557  }
74d99a5e Paul Mundt    2007-11-26  558  
74d99a5e Paul Mundt    2007-11-26 @559  BUILD_TRAP_HANDLER(fpu_error)
74d99a5e Paul Mundt    2007-11-26  560  {
74d99a5e Paul Mundt    2007-11-26  561  	struct task_struct *tsk = current;
74d99a5e Paul Mundt    2007-11-26  562  	TRAP_HANDLER_DECL;
74d99a5e Paul Mundt    2007-11-26  563  
d3ea9fa0 Stuart Menefy 2009-09-25  564  	__unlazy_fpu(tsk, regs);
74d99a5e Paul Mundt    2007-11-26  565  	if (ieee_fpe_handler(regs)) {
0ea820cf Paul Mundt    2010-01-13  566  		tsk->thread.xstate->hardfpu.fpscr &=
74d99a5e Paul Mundt    2007-11-26  567  			~(FPSCR_CAUSE_MASK | FPSCR_FLAG_MASK);

:::::: The code at line 559 was first introduced by commit
:::::: 74d99a5e262229ee865f6f68528d10b82471ead6 sh: SH-2A FPU support.

:::::: TO: Paul Mundt <lethal@...ux-sh.org>
:::::: CC: Paul Mundt <lethal@...ux-sh.org>

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