linux-kernel - [PATCH 1/4] power: supply: core: Constify usb

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Date:   Mon, 13 Apr 2020 20:38:50 +0200
From:   Sebastian Reichel <sebastian.reichel@...labora.com>
To:     Sebastian Reichel <sre@...nel.org>
Cc:     linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com,
        Sebastian Reichel <sebastian.reichel@...labora.com>
Subject: [PATCH 1/4] power: supply: core: Constify usb_types

usb_types is a list of USB types supported by the
hardware, which does not change at runtime. Let's
mark it as const for improved security.

Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
---
 drivers/power/supply/power_supply_sysfs.c | 2 +-
 include/linux/power_supply.h              | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/power/supply/power_supply_sysfs.c b/drivers/power/supply/power_supply_sysfs.c
index f37ad4eae60b..45dafc1820ff 100644
--- a/drivers/power/supply/power_supply_sysfs.c
+++ b/drivers/power/supply/power_supply_sysfs.c
@@ -78,7 +78,7 @@ static const char * const power_supply_scope_text[] = {
 };
 
 static ssize_t power_supply_show_usb_type(struct device *dev,
-					  enum power_supply_usb_type *usb_types,
+					  const enum power_supply_usb_type *usb_types,
 					  ssize_t num_usb_types,
 					  union power_supply_propval *value,
 					  char *buf)
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index dcd5a71e6c67..0392c9cc8f1c 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -223,7 +223,7 @@ struct power_supply_config {
 struct power_supply_desc {
 	const char *name;
 	enum power_supply_type type;
-	enum power_supply_usb_type *usb_types;
+	const enum power_supply_usb_type *usb_types;
 	size_t num_usb_types;
 	enum power_supply_property *properties;
 	size_t num_properties;
-- 
2.25.1