linux-kernel - drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c:31:1: warning: no previous prototype for 'tu102_mmu

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Date:   Thu, 28 May 2020 17:01:15 +0800
From:   kbuild test robot <lkp@...el.com>
To:     James Jones <jajones@...dia.com>
Cc:     kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
        Ben Skeggs <bskeggs@...hat.com>
Subject: drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c:31:1: warning: no
 previous prototype for 'tu102_mmu_kind'

Hi James,

FYI, the error/warning still remains.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   b0c3ba31be3e45a130e13b278cf3b90f69bda6f6
commit: 176ada03e3c2cc0e0d725ea4626dfebec681578f drm/nouveau/mmu: Add correct turing page kinds
date:   4 months ago
config: arm64-sof-customedconfig-xrun-debug-defconfig (attached as .config)
compiler: aarch64-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout 176ada03e3c2cc0e0d725ea4626dfebec681578f
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm64 

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

All warnings (new ones prefixed by >>, old ones prefixed by <<):

>> drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c:31:1: warning: no previous prototype for 'tu102_mmu_kind' [-Wmissing-prototypes]
31 | tu102_mmu_kind(struct nvkm_mmu *mmu, int *count, u8 *invalid)
| ^~~~~~~~~~~~~~

vim +/tu102_mmu_kind +31 drivers/gpu/drm/nouveau/nvkm/subdev/mmu/tu102.c

    29	
    30	const u8 *
  > 31	tu102_mmu_kind(struct nvkm_mmu *mmu, int *count, u8 *invalid)
    32	{
    33		static const u8
    34		kind[16] = {
    35			0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, /* 0x00 */
    36			0x06, 0x06, 0x02, 0x01, 0x03, 0x04, 0x05, 0x07,
    37		};
    38		*count = ARRAY_SIZE(kind);
    39		*invalid = 0x07;
    40		return kind;
    41	}
    42	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

Download attachment ".config.gz" of type "application/gzip" (41446 bytes)