Commit c296d4dc authored by Qian Cai's avatar Qian Cai Committed by Linus Torvalds
Browse files

asm-generic: fix a compilation warning 

Fix this compilation warning on x86 by making flush_cache_vmap() inline.

  lib/ioremap.c: In function 'ioremap_page_range':
  lib/ioremap.c:214:16: warning: variable 'start' set but not used [-Wunused-but-set-variable]
    unsigned long start;
                  ^~~~~

While at it, convert all other similar functions to inline for
consistency.

Link: http://lkml.kernel.org/r/1562594592-15228-1-git-send-email-cai@lca.pw


Signed-off-by: default avatarQian Cai <cai@lca.pw>
Reviewed-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 3a7f0adf

include/asm-generic/cacheflush.h

+60 −14
Original line number Diff line number Diff line
@@ -5,24 +5,70 @@ 
/* Keep includes the same across arches.  */

#include <linux/mm.h>



#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0



/*

 * The cache doesn't need to be flushed when TLB entries change when

 * the cache is mapped to physical memory, not virtual memory

 */

#define flush_cache_all()			do { } while (0)

#define flush_cache_mm(mm)			do { } while (0)

#define flush_cache_dup_mm(mm)			do { } while (0)

#define flush_cache_range(vma, start, end)	do { } while (0)

#define flush_cache_page(vma, vmaddr, pfn)	do { } while (0)

#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0

#define flush_dcache_page(page)			do { } while (0)

#define flush_dcache_mmap_lock(mapping)		do { } while (0)

#define flush_dcache_mmap_unlock(mapping)	do { } while (0)

#define flush_icache_range(start, end)		do { } while (0)

#define flush_icache_page(vma,pg)		do { } while (0)

#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)

#define flush_cache_vmap(start, end)		do { } while (0)

#define flush_cache_vunmap(start, end)		do { } while (0)

static inline void flush_cache_all(void)

{

}



static inline void flush_cache_mm(struct mm_struct *mm)

{

}



static inline void flush_cache_dup_mm(struct mm_struct *mm)

{

}



static inline void flush_cache_range(struct vm_area_struct *vma,

				     unsigned long start,

				     unsigned long end)

{

}



static inline void flush_cache_page(struct vm_area_struct *vma,

				    unsigned long vmaddr,

				    unsigned long pfn)

{

}



static inline void flush_dcache_page(struct page *page)

{

}



static inline void flush_dcache_mmap_lock(struct address_space *mapping)

{

}



static inline void flush_dcache_mmap_unlock(struct address_space *mapping)

{

}



static inline void flush_icache_range(unsigned long start, unsigned long end)

{

}



static inline void flush_icache_page(struct vm_area_struct *vma,

				     struct page *page)

{

}



static inline void flush_icache_user_range(struct vm_area_struct *vma,

					   struct page *page,

					   unsigned long addr, int len)

{

}



static inline void flush_cache_vmap(unsigned long start, unsigned long end)

{

}



static inline void flush_cache_vunmap(unsigned long start, unsigned long end)

{

}



#define copy_to_user_page(vma, page, vaddr, dst, src, len) \

	do { \

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