From df16c40cbfb43fbd6d5d879585b268b131fa95eb Mon Sep 17 00:00:00 2001
From: Christoph Hellwig
Date: Mon, 15 Apr 2019 11:14:36 +0200
Subject: riscv: clear all pending interrupts when booting

Just in case an old interrupt is pending make sure we clear everything
asserted before this kernel started.  Based on similar M-mode code in
opensbi.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nick Kossifidis <mick@ics.forth.gr>
Reviewed-by: Atish Patra <atish.patra@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
---
 arch/riscv/kernel/head.S | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'arch/riscv/kernel')

diff --git a/arch/riscv/kernel/head.S b/arch/riscv/kernel/head.S
index fe884cd69abd..9e3840d84d3e 100644
--- a/arch/riscv/kernel/head.S
+++ b/arch/riscv/kernel/head.S
@@ -22,8 +22,9 @@
 
 __INIT
 ENTRY(_start)
-	/* Mask all interrupts */
+	/* Mask and clear all interrupts */
 	csrw sie, zero
+	csrw sip, zero
 
 	/* Load the global pointer */
 .option push
-- 
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