Allow CONFIG_TARGET_EXT4_RESERVED_PCT to be empty as make_ext4fs is usually
able to figure out a suitable default.

Signed-off-by: Jo-Philipp Wich <j...@mein.io>
---
 include/image.mk | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/image.mk b/include/image.mk
index 8b7d91d..59dd66f 100644
--- a/include/image.mk
+++ b/include/image.mk
@@ -245,7 +245,7 @@ define Image/mkfs/ext4
        $(STAGING_DIR_HOST)/bin/make_ext4fs \
                -l $(E2SIZE) -b $(CONFIG_TARGET_EXT4_BLOCKSIZE) \
                -i $(CONFIG_TARGET_EXT4_MAXINODE) \
-               -m $(CONFIG_TARGET_EXT4_RESERVED_PCT) \
+               $(if $(CONFIG_TARGET_EXT4_RESERVED_PCT),-m 
$(CONFIG_TARGET_EXT4_RESERVED_PCT)) \
                $(if $(CONFIG_TARGET_EXT4_JOURNAL),,-J) \
                $(if $(SOURCE_DATE_EPOCH),-T $(SOURCE_DATE_EPOCH)) \
                $@ $(call mkfs_target_dir,$(1))/
-- 
2.9.3


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