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Diffstat (limited to 'arch/x86/boot')
-rw-r--r--arch/x86/boot/Makefile1
-rw-r--r--arch/x86/boot/printf.c3
2 files changed, 4 insertions, 0 deletions
diff --git a/arch/x86/boot/Makefile b/arch/x86/boot/Makefile
index 1cf24ff6acac..9cc0ff6e9067 100644
--- a/arch/x86/boot/Makefile
+++ b/arch/x86/boot/Makefile
@@ -56,6 +56,7 @@ KBUILD_CFLAGS := $(REALMODE_CFLAGS) -D_SETUP
KBUILD_AFLAGS := $(KBUILD_CFLAGS) -D__ASSEMBLY__
KBUILD_CFLAGS += $(call cc-option,-fmacro-prefix-map=$(srctree)/=)
KBUILD_CFLAGS += -fno-asynchronous-unwind-tables
+KBUILD_CFLAGS += $(CONFIG_CC_IMPLICIT_FALLTHROUGH)
$(obj)/bzImage: asflags-y := $(SVGA_MODE)
diff --git a/arch/x86/boot/printf.c b/arch/x86/boot/printf.c
index 1237beeb9540..51dc14b714f6 100644
--- a/arch/x86/boot/printf.c
+++ b/arch/x86/boot/printf.c
@@ -246,6 +246,7 @@ int vsprintf(char *buf, const char *fmt, va_list args)
case 'x':
flags |= SMALL;
+ fallthrough;
case 'X':
base = 16;
break;
@@ -253,6 +254,8 @@ int vsprintf(char *buf, const char *fmt, va_list args)
case 'd':
case 'i':
flags |= SIGN;
+ break;
+
case 'u':
break;