linux-kernel - Re: mn10300, c6x: CONFIG_GENERIC_BUG must depend on CONFIG

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Date:	Tue, 1 Mar 2016 14:18:56 +0800
From:	kbuild test robot <lkp@...el.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	kbuild-all@...org, kbuild test robot <fengguang.wu@...el.com>,
	Josh Triplett <josh@...htriplett.org>,
	linux-kernel@...r.kernel.org,
	Linux Memory Management List <linux-mm@...ck.org>
Subject: Re: mn10300, c6x: CONFIG_GENERIC_BUG must depend on CONFIG_BUG

Hi Andrew,

[auto build test ERROR on v4.5-rc6]
[also build test ERROR on next-20160229]
[if your patch is applied to the wrong git tree, please drop us a note to help improving the system]

url:    https://github.com/0day-ci/linux/commits/Andrew-Morton/mn10300-c6x-CONFIG_GENERIC_BUG-must-depend-on-CONFIG_BUG/20160301-045134
config: mn10300-allnoconfig (attached as .config)
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
        # save the attached .config to linux build tree
        make.cross ARCH=mn10300 

All errors (new ones prefixed by >>):

>> arch/mn10300/kernel/fpu-nofpu.c:27:36: error: unknown type name 'elf_fpregset_t'
    int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpreg)
                                       ^

vim +/elf_fpregset_t +27 arch/mn10300/kernel/fpu-nofpu.c

278d91c4 Akira Takeuchi 2010-10-27  11  #include <asm/fpu.h>
278d91c4 Akira Takeuchi 2010-10-27  12  
278d91c4 Akira Takeuchi 2010-10-27  13  /*
278d91c4 Akira Takeuchi 2010-10-27  14   * handle an FPU operational exception
278d91c4 Akira Takeuchi 2010-10-27  15   * - there's a possibility that if the FPU is asynchronous, the signal might
278d91c4 Akira Takeuchi 2010-10-27  16   *   be meant for a process other than the current one
278d91c4 Akira Takeuchi 2010-10-27  17   */
278d91c4 Akira Takeuchi 2010-10-27  18  asmlinkage
278d91c4 Akira Takeuchi 2010-10-27  19  void unexpected_fpu_exception(struct pt_regs *regs, enum exception_code code)
278d91c4 Akira Takeuchi 2010-10-27  20  {
278d91c4 Akira Takeuchi 2010-10-27  21  	panic("An FPU exception was received, but there's no FPU enabled.");
278d91c4 Akira Takeuchi 2010-10-27  22  }
278d91c4 Akira Takeuchi 2010-10-27  23  
278d91c4 Akira Takeuchi 2010-10-27  24  /*
278d91c4 Akira Takeuchi 2010-10-27  25   * fill in the FPU structure for a core dump
278d91c4 Akira Takeuchi 2010-10-27  26   */
278d91c4 Akira Takeuchi 2010-10-27 @27  int dump_fpu(struct pt_regs *regs, elf_fpregset_t *fpreg)
278d91c4 Akira Takeuchi 2010-10-27  28  {
278d91c4 Akira Takeuchi 2010-10-27  29  	return 0; /* not valid */
278d91c4 Akira Takeuchi 2010-10-27  30  }

:::::: The code at line 27 was first introduced by commit
:::::: 278d91c4609d55202c1e63d5fc5f01466cc7bbab MN10300: Make the FPU operate in non-lazy mode under SMP

:::::: TO: Akira Takeuchi <takeuchi.akr@...panasonic.com>
:::::: CC: David Howells <dhowells@...hat.com>

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