| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-Id: <20220426221523.3056696-16-daniel.lezcano@linexp.org>
Date: Wed, 27 Apr 2022 00:15:23 +0200
From: Daniel Lezcano <daniel.lezcano@...exp.org>
To: rafael@...nel.org, daniel.lezcano@...aro.org
Cc: khilman@...libre.com, abailon@...libre.com,
linux-pm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 15/15] thermal/of: Initialize trip points separately
Self contain the trip initialization from the device tree in a single
function for the sake of making the code flow more clear.
Cc: Alexandre Bailon <abailon@...libre.com>
Cc: Kevin Hilman <khilman@...libre.com>
Cc; Eduardo Valentin <eduval@...zon.com>
Signed-off-by: Daniel Lezcano <daniel.lezcano@...exp.org>
---
drivers/thermal/thermal_of.c | 79 ++++++++++++++++++++++++------------
1 file changed, 54 insertions(+), 25 deletions(-)
diff --git a/drivers/thermal/thermal_of.c b/drivers/thermal/thermal_of.c
index a356a7b2d73d..ef9c2e7f1af4 100644
--- a/drivers/thermal/thermal_of.c
+++ b/drivers/thermal/thermal_of.c
@@ -681,7 +681,8 @@ static int of_find_trip_id(struct device_node *np, struct device_node *trip)
*
* Return: 0 on success, proper error code otherwise
*/
-static int thermal_of_populate_bind_params(struct device_node *np,
+static int thermal_of_populate_bind_params(struct device_node *tz_np,
+ struct device_node *np,
struct __thermal_bind_params *__tbp)
{
struct of_phandle_args cooling_spec;
@@ -703,7 +704,7 @@ static int thermal_of_populate_bind_params(struct device_node *np,
return -ENODEV;
}
- trip_id = of_find_trip_id(np, trip);
+ trip_id = of_find_trip_id(tz_np, trip);
if (trip_id < 0) {
ret = trip_id;
goto end;
@@ -837,6 +838,53 @@ static int thermal_of_populate_trip(struct device_node *np,
return 0;
}
+static struct thermal_trip *thermal_of_trips_init(struct device_node *np, int *ntrips)
+{
+ struct thermal_trip *tt;
+ struct device_node *trips, *trip;
+ int ret, count;
+
+ trips = of_get_child_by_name(np, "trips");
+ if (!trips) {
+ pr_err("Failed to find 'trips' node\n");
+ return ERR_PTR(-EINVAL);
+ }
+
+ count = of_get_child_count(trips);
+ if (!count) {
+ pr_err("No trip point defined\n");
+ ret = -EINVAL;
+ goto out_of_node_put;
+ }
+
+ tt = kzalloc(sizeof(*tt) * count, GFP_KERNEL);
+ if (!tt) {
+ ret = -ENOMEM;
+ goto out_of_node_put;
+ }
+
+ *ntrips = count;
+
+ count = 0;
+ for_each_child_of_node(trips, trip) {
+ ret = thermal_of_populate_trip(trip, &tt[count++]);
+ if (ret)
+ goto out_kfree;
+ }
+
+ of_node_put(trips);
+
+ return tt;
+
+out_kfree:
+ kfree(tt);
+ *ntrips = 0;
+out_of_node_put:
+ of_node_put(trips);
+
+ return ERR_PTR(ret);
+}
+
/**
* thermal_of_build_thermal_zone - parse and fill one thermal zone data
* @np: DT node containing a thermal zone node
@@ -855,7 +903,6 @@ static struct __thermal_zone
__init *thermal_of_build_thermal_zone(struct device_node *np)
{
struct device_node *child = NULL, *gchild;
- struct device_node *trips;
struct __thermal_zone *tz;
int ret, i;
u32 prop, coef[2];
@@ -897,28 +944,10 @@ __init *thermal_of_build_thermal_zone(struct device_node *np)
tz->offset = 0;
}
- /* trips */
- trips = of_get_child_by_name(np, "trips");
-
- /* No trips provided */
- if (!trips)
+ tz->trips = thermal_of_trips_init(np, &tz->ntrips);
+ if (IS_ERR(tz->trips)) {
+ ret = PTR_ERR(tz->trips);
goto finish;
-
- tz->ntrips = of_get_child_count(trips);
- if (tz->ntrips == 0) /* must have at least one child */
- goto finish;
-
- tz->trips = kcalloc(tz->ntrips, sizeof(*tz->trips), GFP_KERNEL);
- if (!tz->trips) {
- ret = -ENOMEM;
- goto free_tz;
- }
-
- i = 0;
- for_each_child_of_node(trips, gchild) {
- ret = thermal_of_populate_trip(gchild, &tz->trips[i++]);
- if (ret)
- goto free_trips;
}
/* cooling-maps */
@@ -940,7 +969,7 @@ __init *thermal_of_build_thermal_zone(struct device_node *np)
i = 0;
for_each_child_of_node(child, gchild) {
- ret = thermal_of_populate_bind_params(gchild, &tz->tbps[i++]);
+ ret = thermal_of_populate_bind_params(np, gchild, &tz->tbps[i++]);
if (ret)
goto free_tbps;
}
--
2.25.1
Powered by blists - more mailing lists