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-rw-r--r--ports/atmel-samd/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/atmel-samd/Makefile b/ports/atmel-samd/Makefile
index f00366c27..20c79de8f 100644
--- a/ports/atmel-samd/Makefile
+++ b/ports/atmel-samd/Makefile
@@ -255,7 +255,7 @@ SRC_ASF += \
hal/src/hal_mci_sync.c \
hpl/sdhc/hpl_sdhc.c \
-$(BUILD)/asf4/$(CHIP_FAMILY)/hpl/sdhc/hpl_sdhc.o: CFLAGS += -Wno-cast-align
+$(BUILD)/asf4/$(CHIP_FAMILY)/hpl/sdhc/hpl_sdhc.o: CFLAGS += -Wno-cast-align -Wno-implicit-fallthrough
endif
$(BUILD)/asf4/$(CHIP_FAMILY)/hpl/sercom/hpl_sercom.o: CFLAGS += -Wno-maybe-uninitialized