]> git.proxmox.com Git - mirror_ubuntu-artful-kernel.git/commit
mn10300: fix kernel build failures when using gcc-4.x
authorMark Salter <msalter@redhat.com>
Thu, 1 Oct 2009 22:44:01 +0000 (15:44 -0700)
committerLinus Torvalds <torvalds@linux-foundation.org>
Thu, 1 Oct 2009 23:11:12 +0000 (16:11 -0700)
commitd22a001bf6a502e978a8617e3f297b4d762cfbb5
tree6291200ec18203153ff6e26a666bd7809659b371
parent933d35f00cfaf99985515c7c212d9dee30b1a1fb
mn10300: fix kernel build failures when using gcc-4.x

Fix some build failures when using gcc-4.x for MN10300.

Firstly, __get_user() fails to build because the pointer points to a const and
__gu_val ends up being read-only:

In file included from include/linux/mempolicy.h:62,
                 from init/main.c:50:
include/linux/pagemap.h: In function 'fault_in_pages_readable':
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:394: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
include/linux/pagemap.h:400: error: read-only variable '__gu_val' used as 'asm' output
make[1]: *** [init/main.o] Error 1

Secondly, gcc-4 doesn't allow casts of lvalues:

  UPD     include/linux/compile.h
arch/mn10300/kernel/rtc.c: In function 'calibrate_clock':
arch/mn10300/kernel/rtc.c:170: error: lvalue required as left operand of assignment
arch/mn10300/kernel/rtc.c:172: error: lvalue required as left operand of assignment
make[1]: *** [arch/mn10300/kernel/rtc.o] Error 1

These are seen with gcc 4.2.1.

Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/mn10300/include/asm/uaccess.h
arch/mn10300/unit-asb2303/include/unit/clock.h
arch/mn10300/unit-asb2305/include/unit/clock.h