+ asm-generic-fix-a-compilation-warning.patch added to -mm tree

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The patch titled
     Subject: asm-generic: fix a compilation warning
has been added to the -mm tree.  Its filename is
     asm-generic-fix-a-compilation-warning.patch

This patch should soon appear at
    http://ozlabs.org/~akpm/mmots/broken-out/asm-generic-fix-a-compilation-warning.patch
and later at
    http://ozlabs.org/~akpm/mmotm/broken-out/asm-generic-fix-a-compilation-warning.patch

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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next and is updated
there every 3-4 working days

------------------------------------------------------
From: Qian Cai <cai@xxxxxx>
Subject: 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@xxxxxx
Signed-off-by: Qian Cai <cai@xxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---

 include/asm-generic/cacheflush.h |   74 +++++++++++++++++++++++------
 1 file changed, 60 insertions(+), 14 deletions(-)

--- a/include/asm-generic/cacheflush.h~asm-generic-fix-a-compilation-warning
+++ a/include/asm-generic/cacheflush.h
@@ -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 { \
_

Patches currently in -mm which might be from cai@xxxxxx are

iommu-replace-single-char-identifiers-in-macros.patch
mm-rework-non-root-kmem_cache-lifecycle-management-fix.patch
arm64-switch-to-generic-version-of-pte-allocation-fix.patch
drivers-base-memory-pass-a-block_id-to-init_memory_block-fix.patch
asm-generic-fix-a-compilation-warning.patch




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