MIPS: Fix build error when SMP is used without GIC

The MIPS_GIC_IPI should only be selected when MIPS_GIC is also
selected, otherwise it results in a compile error. smp-gic.c uses some
functions from include/linux/irqchip/mips-gic.h like
plat_ipi_call_int_xlate() which are only added to the header file when
MIPS_GIC is set. The Lantiq SoC does not use the GIC, but supports SMP.
The calls top the functions from smp-gic.c are already protected by
some #ifdefs

The first part of this was introduced in commit 72e20142b2bf ("MIPS:
Move GIC IPI functions out of smp-cmp.c")

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Cc: Paul Burton <paul.burton@imgtec.com>
Cc: stable@vger.kernel.org # v3.15+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/12774/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 4 insertions, 3 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 74a3db92da1b..d3da79dda629 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -2169,7 +2169,7 @@ config MIPS_MT_SMP
         select CPU_MIPSR2_IRQ_VI
         select CPU_MIPSR2_IRQ_EI
         select SYNC_R4K
-        select MIPS_GIC_IPI
+        select MIPS_GIC_IPI if MIPS_GIC
         select MIPS_MT
         select SMP
         select SMP_UP
@@ -2267,7 +2267,7 @@ config MIPS_VPE_APSP_API_MT
 config MIPS_CMP
         bool "MIPS CMP framework support (DEPRECATED)"
         depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
-        select MIPS_GIC_IPI
+        select MIPS_GIC_IPI if MIPS_GIC
         select SMP
         select SYNC_R4K
         select SYS_SUPPORTS_SMP
@@ -2287,7 +2287,7 @@ config MIPS_CPS
         select MIPS_CM
         select MIPS_CPC
         select MIPS_CPS_PM if HOTPLUG_CPU
-        select MIPS_GIC_IPI
+        select MIPS_GIC_IPI if MIPS_GIC
         select SMP
         select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
         select SYS_SUPPORTS_HOTPLUG_CPU
@@ -2306,6 +2306,7 @@ config MIPS_CPS_PM
         bool
 
 config MIPS_GIC_IPI
+        depends on MIPS_GIC
         bool
 
 config MIPS_CM