powerpc/8xx: Fix do_mtspr_cpu6() build on older compilers

GCC < 4.9 is unable to build this, saying:

  arch/powerpc/mm/8xx_mmu.c:139:2: error: memory input 1 is not directly addressable

Change the one-element array into a simple variable to avoid this.

Fixes: 1458dd951f ("powerpc/8xx: Handle CPU6 ERRATA directly in mtspr() macro")
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Leroy 2016-03-15 14:07:49 +01:00 committed by Michael Ellerman
parent b081251ef6
commit 2e098dcee6

View file

@ -53,7 +53,7 @@
#ifdef CONFIG_8xx_CPU6
#define do_mtspr_cpu6(rn, rn_addr, v) \
do { \
int _reg_cpu6 = rn_addr, _tmp_cpu6[1]; \
int _reg_cpu6 = rn_addr, _tmp_cpu6; \
asm volatile("stw %0, %1;" \
"lwz %0, %1;" \
"mtspr " __stringify(rn) ",%2" : \