[PATCH] riscv: uaccess: fix __put_kernel_nofault()

[Changbin Du]

The copy_from_kernel_nofault() is broken on riscv because the 'dst' and
'src' are mistakenly reversed in __put_kernel_nofault() macro.

copy_to_kernel_nofault:
...
0xffffffe0003159b8 <+30>:    sd      a4,0(a1) # a1 aka 'src'

Fixes: d464118cdc ("riscv: implement __get_kernel_nofault and 
__put_user_nofault")
Signed-off-by: Changbin Du <changbin...@gmail.com>
Cc: Christoph Hellwig <h...@lst.de>
---
 arch/riscv/include/asm/uaccess.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/riscv/include/asm/uaccess.h b/arch/riscv/include/asm/uaccess.h
index c47e6b35c551..824b2c9da75b 100644
--- a/arch/riscv/include/asm/uaccess.h
+++ b/arch/riscv/include/asm/uaccess.h
@@ -476,7 +476,7 @@ do {                                                        
                \
 do {                                                                   \
        long __kr_err;                                                  \
                                                                        \
-       __put_user_nocheck(*((type *)(dst)), (type *)(src), __kr_err);  \
+       __put_user_nocheck(*((type *)(src)), (type *)(dst), __kr_err);  \
        if (unlikely(__kr_err))                                         \
                goto err_label;                                         \
 } while (0)
-- 
2.17.1