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Subject[PATCH v2 2/4] hwmon: Use subdir-ccflags-* to inherit debug flag
From: Junhao He <>

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

Considering CONFIG_HWMON_DEBUG_CHIP intends to have DEBUG
recursively in driver/hwmon. It will be clearer
to use subdir-ccflags-* instead of ccflags-* to inherit
the debug settings from Kconfig when traversing subdirectories,
and it will avoid omittance of DEBUG define when debug messages
added in the subdirectories.

Suggested-by: Bjorn Helgaas <>
Signed-off-by: Junhao He <>
Signed-off-by: Yicong Yang <>
drivers/hwmon/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/Makefile b/drivers/hwmon/Makefile
index 09a86c5..1c0c089 100644
--- a/drivers/hwmon/Makefile
+++ b/drivers/hwmon/Makefile
@@ -201,5 +201,5 @@ obj-$(CONFIG_SENSORS_XGENE) += xgene-hwmon.o
obj-$(CONFIG_SENSORS_OCC) += occ/
obj-$(CONFIG_PMBUS) += pmbus/

+subdir-ccflags-$(CONFIG_HWMON_DEBUG_CHIP) := -DDEBUG

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