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| author | Arnd Bergmann <arnd@arndb.de> | 2019-02-22 15:42:23 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-02-28 18:16:00 +0000 |
| commit | 366e37e4da23f9df498cc9577cadcb354f7bd431 (patch) | |
| tree | 710779d189848a45aa13e0f9ae427bcb5428c748 /arch/arm64 | |
| parent | a29c78234942fcfba2c5c305adc85b64332f9a95 (diff) | |
| download | linux-0-day-366e37e4da23f9df498cc9577cadcb354f7bd431.tar.gz linux-0-day-366e37e4da23f9df498cc9577cadcb354f7bd431.tar.xz | |
arm64: avoid clang warning about self-assignment
Building a preprocessed source file for arm64 now always produces
a warning with clang because of the page_to_virt() macro assigning
a variable to itself.
Adding a new temporary variable avoids this issue.
Fixes: 2813b9c02962 ("kasan, mm, arm64: tag non slab memory allocated via pagealloc")
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/include/asm/memory.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h index e1ec947e7c0ca..6340aa8350d97 100644 --- a/arch/arm64/include/asm/memory.h +++ b/arch/arm64/include/asm/memory.h @@ -316,8 +316,9 @@ static inline void *phys_to_virt(phys_addr_t x) #define page_to_virt(page) ({ \ unsigned long __addr = \ ((__page_to_voff(page)) | PAGE_OFFSET); \ - __addr = __tag_set(__addr, page_kasan_tag(page)); \ - ((void *)__addr); \ + unsigned long __addr_tag = \ + __tag_set(__addr, page_kasan_tag(page)); \ + ((void *)__addr_tag); \ }) #define virt_to_page(vaddr) ((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START)) |