From: Kefeng Wang <wangkefeng.w...@huawei.com> [ Upstream commit fa8174aa225fe3d53b37552e5066e6f0301dbabd ]
Some drivers use PAGE_SHARED, pgprot_writecombine()/pgprot_device(), add the defination to fix build error if NOMMU. Reported-by: Hulk Robot <hul...@huawei.com> Signed-off-by: Kefeng Wang <wangkefeng.w...@huawei.com> Signed-off-by: Palmer Dabbelt <palmerdabb...@google.com> Signed-off-by: Sasha Levin <sas...@kernel.org> --- arch/riscv/include/asm/mmio.h | 2 ++ arch/riscv/include/asm/pgtable.h | 1 + 2 files changed, 3 insertions(+) diff --git a/arch/riscv/include/asm/mmio.h b/arch/riscv/include/asm/mmio.h index a2c809df2733..56053c9838b2 100644 --- a/arch/riscv/include/asm/mmio.h +++ b/arch/riscv/include/asm/mmio.h @@ -16,6 +16,8 @@ #ifndef CONFIG_MMU #define pgprot_noncached(x) (x) +#define pgprot_writecombine(x) (x) +#define pgprot_device(x) (x) #endif /* CONFIG_MMU */ /* Generic IO read/write. These perform native-endian accesses. */ diff --git a/arch/riscv/include/asm/pgtable.h b/arch/riscv/include/asm/pgtable.h index 393f2014dfee..05b92987f500 100644 --- a/arch/riscv/include/asm/pgtable.h +++ b/arch/riscv/include/asm/pgtable.h @@ -460,6 +460,7 @@ static inline int ptep_clear_flush_young(struct vm_area_struct *vma, #else /* CONFIG_MMU */ +#define PAGE_SHARED __pgprot(0) #define PAGE_KERNEL __pgprot(0) #define swapper_pg_dir NULL #define VMALLOC_START 0 -- 2.25.1
