[PATCH v2 3/4] pps: Use subdir-ccflags-* to inherit debug flag

[Yicong Yang]

From: Junhao He <hejunhao2@xxxxxxxxxxxxx>

We use ccflags-$(CONFIG_PPS_DEBUG) for the debug
message in drivers/pps, but the DEBUG flag will not pass to
the subdirectory.

Considering CONFIG_HWMON_DEBUG_CHIP intends to turn on debug
recursively under driver/pps, so it will be clearer to use
subdir-ccflags-* instead of ccflags-* to inherit
the debug settings from Kconfig when traversing subdirectories.

Suggested-by: Bjorn Helgaas <bhelgaas@xxxxxxxxxx>
Signed-off-by: Junhao He <hejunhao2@xxxxxxxxxxxxx>
Signed-off-by: Yicong Yang <yangyicong@xxxxxxxxxxxxx>
---
 drivers/pps/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pps/Makefile b/drivers/pps/Makefile
index ceaf65c..7a2d3f7 100644
--- a/drivers/pps/Makefile
+++ b/drivers/pps/Makefile
@@ -8,4 +8,4 @@ pps_core-$(CONFIG_NTP_PPS)	+= kc.o
 obj-$(CONFIG_PPS)		:= pps_core.o
 obj-y				+= clients/ generators/
 
-ccflags-$(CONFIG_PPS_DEBUG) := -DDEBUG
+subdir-ccflags-$(CONFIG_PPS_DEBUG) := -DDEBUG
-- 
2.8.1