[PATCH 7/8] Cleaner checks for MPIC on pSeries.

[mostrows at watson.ibm.com]

Instead of checking the pSeries_mpic pointer, use a wrapper
(pSeries_uses_mpic()) that tells us what we want to know.

--
Signed-off-by: Michal Ostrowski <mostrows at watson.ibm.com>

---

 arch/powerpc/kernel/rtas_pci.c         |    2 +-
 arch/powerpc/platforms/pseries/setup.c |    2 +-
 include/asm-powerpc/mpic.h             |    6 ++++++
 3 files changed, 8 insertions(+), 2 deletions(-)

082a93566e954ce0cc945b89aced0b28feb7ee60
diff --git a/arch/powerpc/kernel/rtas_pci.c b/arch/powerpc/kernel/rtas_pci.c
index e1dbd53..2a6b729 100644
--- a/arch/powerpc/kernel/rtas_pci.c
+++ b/arch/powerpc/kernel/rtas_pci.c
@@ -322,7 +322,7 @@ unsigned long __init find_and_init_phbs(
 		pci_setup_phb_io(phb, index == 0);
 #ifdef CONFIG_PPC_PSERIES
 		/* XXX This code need serious fixing ... --BenH */
-		if (pSeries_mpic) {
+		if (pSeries_uses_mpic()) {
 			int addr = root_size_cells * (index + 2) - 1;
 			mpic_assign_isu(pSeries_mpic, index, opprop[addr]);
 		}
diff --git a/arch/powerpc/platforms/pseries/setup.c b/arch/powerpc/platforms/pseries/setup.c
index 4ff127b..551da6a 100644
--- a/arch/powerpc/platforms/pseries/setup.c
+++ b/arch/powerpc/platforms/pseries/setup.c
@@ -536,7 +536,7 @@ static void pseries_kexec_cpu_down(int c
 		}
 	}
 
-	if (pSeries_mpic)
+	if (pSeries_uses_mpic())
 		mpic_teardown_this_cpu(secondary);
 	else
 		xics_teardown_cpu(secondary);
diff --git a/include/asm-powerpc/mpic.h b/include/asm-powerpc/mpic.h
index 6b9e781..1f1b2eb 100644
--- a/include/asm-powerpc/mpic.h
+++ b/include/asm-powerpc/mpic.h
@@ -287,5 +287,11 @@ extern int mpic_get_irq(struct pt_regs *
 /* global mpic for pSeries */
 extern struct mpic *pSeries_mpic;
 
+#ifdef CONFIG_MPIC
+#define pSeries_uses_mpic() (pSeries_mpic != NULL)
+#else
+#define pSeries_uses_mpic() 0
+#endif
+
 #endif /* __KERNEL__ */
 #endif	/* _ASM_POWERPC_MPIC_H */
-- 
1.1.4.g0b63-dirty