linux-kernel - [PATCH AUTOSEL for 4.9 154/293] ACPI: EC: Fix EC command visibility for dynamic debug

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Date:   Mon, 9 Apr 2018 00:24:53 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "stable@...r.kernel.org" <stable@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     Lv Zheng <lv.zheng@...el.com>,
        "Rafael J . Wysocki" <rafael.j.wysocki@...el.com>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 154/293] ACPI: EC: Fix EC command visibility
 for dynamic debug

From: Lv Zheng <lv.zheng@...el.com>

[ 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
CONFIG_DYNAMIC_DEBUG.

Tested-by: Wang Wendy <wendy.wang@...el.com>
Tested-by: Feng Chenzhou <chenzhoux.feng@...el.com>
Signed-off-by: Lv Zheng <lv.zheng@...el.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 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 38136d608471..217b0bac33d9 100644
--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -317,7 +317,7 @@ static inline void acpi_ec_write_data(struct acpi_ec *ec, u8 data)
 	ec->timestamp = jiffies;
 }
 
-#ifdef DEBUG
+#if defined(DEBUG) || defined(CONFIG_DYNAMIC_DEBUG)
 static const char *acpi_ec_cmd_string(u8 cmd)
 {
 	switch (cmd) {
-- 
2.15.1