From: Zong Li <zongbox@gmail.com>
Date: Tue, 2 Oct 2018 08:52:28 +0000 (+0800)
Subject: RISC-V: Use swiotlb on RV64 only
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=51858aaf9bea3ddf166bf9d252a1fc351260b497;p=openwrt%2Fstaging%2Fblogic.git

RISC-V: Use swiotlb on RV64 only

Only RV64 supports swiotlb. On RV32, it don't select the SWIOTLB.

Signed-off-by: Zong Li <zong@andestech.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
---

diff --git a/arch/riscv/kernel/setup.c b/arch/riscv/kernel/setup.c
index b2d26d9d8489..c9461985db7e 100644
--- a/arch/riscv/kernel/setup.c
+++ b/arch/riscv/kernel/setup.c
@@ -227,7 +227,10 @@ void __init setup_arch(char **cmdline_p)
 	setup_bootmem();
 	paging_init();
 	unflatten_device_tree();
+
+#ifdef CONFIG_SWIOTLB
 	swiotlb_init(1);
+#endif
 
 #ifdef CONFIG_SMP
 	setup_smp();