netdev - [vhost:linux-next 2/23] include/linux/swiotlb.h:99:22: error: static declaration of 'swiotlb_max_mapping

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Date:   Wed, 6 Feb 2019 03:37:12 +0800
From:   kbuild test robot <lkp@...el.com>
To:     Joerg Roedel <jroedel@...e.de>
Cc:     kbuild-all@...org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        "Michael S. Tsirkin" <mst@...hat.com>,
        Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>,
        Christoph Hellwig <hch@....de>
Subject: [vhost:linux-next 2/23] include/linux/swiotlb.h:99:22: error: static
 declaration of 'swiotlb_max_mapping_size' follows non-static declaration

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost.git linux-next
head:   104f89a60ef5ec77d6f559eac4676844b3480740
commit: 951a381d4c0d45a9b44de30228c6ef17083854ea [2/23] swiotlb: Introduce swiotlb_max_mapping_size()
config: i386-tinyconfig (attached as .config)
compiler: gcc-8 (Debian 8.2.0-14) 8.2.0
reproduce:
        git checkout 951a381d4c0d45a9b44de30228c6ef17083854ea
        # save the attached .config to linux build tree
        make ARCH=i386 

All errors (new ones prefixed by >>):


vim +/swiotlb_max_mapping_size +99 include/linux/swiotlb.h

    75	
    76	bool swiotlb_map(struct device *dev, phys_addr_t *phys, dma_addr_t *dma_addr,
    77			size_t size, enum dma_data_direction dir, unsigned long attrs);
    78	void __init swiotlb_exit(void);
    79	unsigned int swiotlb_max_segment(void);
    80	#else
    81	#define swiotlb_force SWIOTLB_NO_FORCE
    82	static inline bool is_swiotlb_buffer(phys_addr_t paddr)
    83	{
    84		return false;
    85	}
    86	static inline bool swiotlb_map(struct device *dev, phys_addr_t *phys,
    87			dma_addr_t *dma_addr, size_t size, enum dma_data_direction dir,
    88			unsigned long attrs)
    89	{
    90		return false;
    91	}
    92	static inline void swiotlb_exit(void)
    93	{
    94	}
    95	static inline unsigned int swiotlb_max_segment(void)
    96	{
    97		return 0;
    98	}
  > 99	static inline size_t swiotlb_max_mapping_size(struct device *dev)
   100	{
   101		return SIZE_MAX;
   102	}
   103	#endif /* CONFIG_SWIOTLB */
   104	

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