usb: typec: constify the struct device_type usage

Since commit aed65af1cc2f ("drivers: make device_type const"), the driver
core can properly handle constant struct device_type. Move all the
device_type variables in use by the driver to be constant structures as
well, placing it into read-only memory which can not be modified at
runtime.

Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net>
Link: https://lore.kernel.org/r/20240218-device_cleanup-usb-v1-1-77423c4da262@marliere.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/usb/typec/pd.c b/drivers/usb/typec/pd.c
index b9cca2be76fce447970ba08beb6419262bf95a14..d78c04a421bc2e7a52cdfe659245887bbae870ae 100644 (file)
--- a/drivers/usb/typec/pd.c
+++ b/drivers/usb/typec/pd.c
@@ -157,7 +157,7 @@ static const struct attribute_group source_fixed_supply_group = {
 };
 __ATTRIBUTE_GROUPS(source_fixed_supply);
 
-static struct device_type source_fixed_supply_type = {
+static const struct device_type source_fixed_supply_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = source_fixed_supply_groups,
@@ -182,7 +182,7 @@ static const struct attribute_group sink_fixed_supply_group = {
 };
 __ATTRIBUTE_GROUPS(sink_fixed_supply);
 
-static struct device_type sink_fixed_supply_type = {
+static const struct device_type sink_fixed_supply_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = sink_fixed_supply_groups,
@@ -213,7 +213,7 @@ static struct attribute *source_variable_supply_attrs[] = {
 };
 ATTRIBUTE_GROUPS(source_variable_supply);
 
-static struct device_type source_variable_supply_type = {
+static const struct device_type source_variable_supply_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = source_variable_supply_groups,
@@ -227,7 +227,7 @@ static struct attribute *sink_variable_supply_attrs[] = {
 };
 ATTRIBUTE_GROUPS(sink_variable_supply);
 
-static struct device_type sink_variable_supply_type = {
+static const struct device_type sink_variable_supply_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = sink_variable_supply_groups,
@@ -258,7 +258,7 @@ static struct attribute *source_battery_attrs[] = {
 };
 ATTRIBUTE_GROUPS(source_battery);
 
-static struct device_type source_battery_type = {
+static const struct device_type source_battery_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = source_battery_groups,
@@ -272,7 +272,7 @@ static struct attribute *sink_battery_attrs[] = {
 };
 ATTRIBUTE_GROUPS(sink_battery);
 
-static struct device_type sink_battery_type = {
+static const struct device_type sink_battery_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = sink_battery_groups,
@@ -339,7 +339,7 @@ static struct attribute *source_pps_attrs[] = {
 };
 ATTRIBUTE_GROUPS(source_pps);
 
-static struct device_type source_pps_type = {
+static const struct device_type source_pps_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = source_pps_groups,
@@ -353,7 +353,7 @@ static struct attribute *sink_pps_attrs[] = {
 };
 ATTRIBUTE_GROUPS(sink_pps);
 
-static struct device_type sink_pps_type = {
+static const struct device_type sink_pps_type = {
        .name = "pdo",
        .release = pdo_release,
        .groups = sink_pps_groups,
@@ -371,30 +371,30 @@ static const char * const apdo_supply_name[] = {
        [APDO_TYPE_PPS]  = "programmable_supply",
 };
 
-static struct device_type *source_type[] = {
+static const struct device_type *source_type[] = {
        [PDO_TYPE_FIXED] = &source_fixed_supply_type,
        [PDO_TYPE_BATT]  = &source_battery_type,
        [PDO_TYPE_VAR]   = &source_variable_supply_type,
 };
 
-static struct device_type *source_apdo_type[] = {
+static const struct device_type *source_apdo_type[] = {
        [APDO_TYPE_PPS]  = &source_pps_type,
 };
 
-static struct device_type *sink_type[] = {
+static const struct device_type *sink_type[] = {
        [PDO_TYPE_FIXED] = &sink_fixed_supply_type,
        [PDO_TYPE_BATT]  = &sink_battery_type,
        [PDO_TYPE_VAR]   = &sink_variable_supply_type,
 };
 
-static struct device_type *sink_apdo_type[] = {
+static const struct device_type *sink_apdo_type[] = {
        [APDO_TYPE_PPS]  = &sink_pps_type,
 };
 
 /* REVISIT: Export when EPR_*_Capabilities need to be supported. */
 static int add_pdo(struct usb_power_delivery_capabilities *cap, u32 pdo, int position)
 {
-       struct device_type *type;
+       const struct device_type *type;
        const char *name;
        struct pdo *p;
        int ret;
@@ -460,7 +460,7 @@ static void pd_capabilities_release(struct device *dev)
        kfree(to_usb_power_delivery_capabilities(dev));
 }
 
-static struct device_type pd_capabilities_type = {
+static const struct device_type pd_capabilities_type = {
        .name = "capabilities",
        .release = pd_capabilities_release,
 };
@@ -575,7 +575,7 @@ static void pd_release(struct device *dev)
        kfree(pd);
 }
 
-static struct device_type pd_type = {
+static const struct device_type pd_type = {
        .name = "usb_power_delivery",
        .release = pd_release,
        .groups = pd_groups,