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-rw-r--r--arch/mips/boot/compressed/uart-prom.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/boot/compressed/uart-prom.c b/arch/mips/boot/compressed/uart-prom.c
index 1c3d51bc90bb..d6f0fee0a151 100644
--- a/arch/mips/boot/compressed/uart-prom.c
+++ b/arch/mips/boot/compressed/uart-prom.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
extern void prom_putchar(unsigned char ch);