h8300/uaccess: remove assignment to __gu_val in unhandled case of get_user()
Geert Uytterhoeven [Wed, 11 Jul 2012 21:02:26 +0000 (14:02 -0700)]
__gu_val is const if the passed ptr is const, giving:

  include/linux/pagemap.h: In function 'fault_in_pages_readable':
  include/linux/pagemap.h:442:2: error: assignment of read-only variable '__gu_val'
  include/linux/pagemap.h:448:4: error: assignment of read-only variable '__gu_val'
  include/linux/pagemap.h: In function 'fault_in_multipages_readable':
  include/linux/pagemap.h:499:3: error: assignment of read-only variable '__gu_val'
  include/linux/pagemap.h:508:3: error: assignment of read-only variable '__gu_val'
  make[4]: *** [init/main.o] Error 1

As we don't care about the actual value of __gu_val in the unhandled
case (it will cause a link error anyway), just remove the assignment.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Tony Breeds <tony@bakeyournoodle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

arch/h8300/include/asm/uaccess.h

index 356068c..534394f 100644 (file)
@@ -100,7 +100,6 @@ extern int __put_user_bad(void);
        break;                                                  \
     default:                                                   \
        __gu_err = __get_user_bad();                            \
-       __gu_val = 0;                                           \
        break;                                                  \
     }                                                          \
     (x) = __gu_val;                                            \