From: Lv Zheng <>

[ Upstream commit 4625d752e600c116e6327f9d7fc16e8f5be107e9 ]

acpi_ec_cmd_string() currently is only enabled for "DEBUG" macro, but users
trend to use CONFIG_DYNAMIC_DEBUG and enable ec.c pr_debug() print-outs by
"dyndbg='file ec.c +p'". In this use case, all command names are turned
into UNDEF and the log is confusing. This affects bugzilla triage work.

This patch fixes this issue by enabling acpi_ec_cmd_string() for

Tested-by: Wang Wendy <>
Tested-by: Feng Chenzhou <>
Signed-off-by: Lv Zheng <>
Signed-off-by: Rafael J. Wysocki <>
Signed-off-by: Sasha Levin <>
 drivers/acpi/ec.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c
index 5f9b74b9b71f..3ecadb24adde 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -167,7 +167,7 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, 
u8 data)
        outb(data, ec->data_addr);
-#ifdef DEBUG
+#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 static const char *acpi_ec_cmd_string(u8 cmd)
        switch (cmd) {

Reply via email to