powerpc: Fix duplicate const clang warning in user access code

We see a large number of duplicate const errors in the user access
code when building with llvm/clang:

  include/linux/pagemap.h:576:8: warning: duplicate 'const' declaration specifier
      [-Wduplicate-decl-specifier]
        ret = __get_user(c, uaddr);

The problem is we are doing const __typeof__(*(ptr)), which will hit the
warning if ptr is marked const.

Removing const does not seem to have any effect on GCC code generation.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h
index a0c071d..2a8ebae 100644 (file)
--- a/arch/powerpc/include/asm/uaccess.h
+++ b/arch/powerpc/include/asm/uaccess.h
@@ -265,7 +265,7 @@ do {                                                                \
 ({                                                             \
        long __gu_err;                                          \
        unsigned long __gu_val;                                 \
-       const __typeof__(*(ptr)) __user *__gu_addr = (ptr);     \
+       __typeof__(*(ptr)) __user *__gu_addr = (ptr);   \
        __chk_user_ptr(ptr);                                    \
        if (!is_kernel_addr((unsigned long)__gu_addr))          \
                might_fault();                                  \
@@ -279,7 +279,7 @@ do {                                                                \
 ({                                                             \
        long __gu_err;                                          \
        long long __gu_val;                                     \
-       const __typeof__(*(ptr)) __user *__gu_addr = (ptr);     \
+       __typeof__(*(ptr)) __user *__gu_addr = (ptr);   \
        __chk_user_ptr(ptr);                                    \
        if (!is_kernel_addr((unsigned long)__gu_addr))          \
                might_fault();                                  \
@@ -293,7 +293,7 @@ do {                                                                \
 ({                                                                     \
        long __gu_err = -EFAULT;                                        \
        unsigned long  __gu_val = 0;                                    \
-       const __typeof__(*(ptr)) __user *__gu_addr = (ptr);             \
+       __typeof__(*(ptr)) __user *__gu_addr = (ptr);           \
        might_fault();                                                  \
        if (access_ok(VERIFY_READ, __gu_addr, (size)))                  \
                __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
@@ -305,7 +305,7 @@ do {                                                                \
 ({                                                             \
        long __gu_err;                                          \
        unsigned long __gu_val;                                 \
-       const __typeof__(*(ptr)) __user *__gu_addr = (ptr);     \
+       __typeof__(*(ptr)) __user *__gu_addr = (ptr);   \
        __chk_user_ptr(ptr);                                    \
        __get_user_size(__gu_val, __gu_addr, (size), __gu_err); \
        (x) = (__force __typeof__(*(ptr)))__gu_val;                     \