[PATCH] RISC-V: Add conditional macro for boot_sec_cpu

From: Zong Li
Date: Wed Jun 20 2018 - 21:47:51 EST


Fix link error when disable support SMP.
It causes the undefined reference to `smp_callin'.

Signed-off-by: Zong Li <zong@xxxxxxxxxxxxx>
---
arch/riscv/kernel/head.S | 2 ++
1 file changed, 2 insertions(+)

diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index 3b6293f10e3e..396ec7b349ce 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -152,6 +152,7 @@ END(_start)
.section .text
.global boot_sec_cpu

+#ifdef CONFIG_HOTPLUG_CPU
boot_sec_cpu:
/* clear all pending flags */
csrw sip, zero
@@ -160,6 +161,7 @@ boot_sec_cpu:
fence

tail smp_callin
+#endif

__PAGE_ALIGNED_BSS
/* Empty zero page */
--
2.16.1