From 6fb75c967162c28b2a50cb4673cce36e0e70e3dc Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 17 Jun 2024 20:07:35 +0200 Subject: [PATCH] thermal: uniphier: Use thermal_zone_for_each_trip() for walking trip points It is generally inefficient to iterate over trip indices and call thermal_zone_get_trip() every time to get the struct thermal_trip corresponding to the given trip index, so modify the uniphier thermal driver to use thermal_zone_for_each_trip() for walking trips. Signed-off-by: Rafael J. Wysocki Reviewed-by: Kunihiko Hayashi Link: https://patch.msgid.link/2148114.bB369e8A3T@kreacher [ rjw: Add missing return statement, remove unused local variable ] Signed-off-by: Rafael J. Wysocki --- drivers/thermal/uniphier_thermal.c | 39 +++++++++++++++++++----------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/drivers/thermal/uniphier_thermal.c b/drivers/thermal/uniphier_thermal.c index 274f36358b21..0325b7195136 100644 --- a/drivers/thermal/uniphier_thermal.c +++ b/drivers/thermal/uniphier_thermal.c @@ -239,13 +239,34 @@ static irqreturn_t uniphier_tm_alarm_irq_thread(int irq, void *_tdev) return IRQ_HANDLED; } +struct trip_walk_data { + struct uniphier_tm_dev *tdev; + int crit_temp; + int index; +}; + +static int uniphier_tm_trip_walk_cb(struct thermal_trip *trip, void *arg) +{ + struct trip_walk_data *twd = arg; + + if (trip->type == THERMAL_TRIP_CRITICAL && + trip->temperature < twd->crit_temp) + twd->crit_temp = trip->temperature; + + uniphier_tm_set_alert(twd->tdev, twd->index, trip->temperature); + twd->tdev->alert_en[twd->index++] = true; + + return 0; +} + static int uniphier_tm_probe(struct platform_device *pdev) { + struct trip_walk_data twd = { .crit_temp = INT_MAX, .index = 0 }; struct device *dev = &pdev->dev; struct regmap *regmap; struct device_node *parent; struct uniphier_tm_dev *tdev; - int i, ret, irq, crit_temp = INT_MAX; + int ret, irq; tdev = devm_kzalloc(dev, sizeof(*tdev), GFP_KERNEL); if (!tdev) @@ -293,20 +314,10 @@ static int uniphier_tm_probe(struct platform_device *pdev) } /* set alert temperatures */ - for (i = 0; i < thermal_zone_get_num_trips(tdev->tz_dev); i++) { - struct thermal_trip trip; + twd.tdev = tdev; + thermal_zone_for_each_trip(tdev->tz_dev, uniphier_tm_trip_walk_cb, &twd); - ret = thermal_zone_get_trip(tdev->tz_dev, i, &trip); - if (ret) - return ret; - - if (trip.type == THERMAL_TRIP_CRITICAL && - trip.temperature < crit_temp) - crit_temp = trip.temperature; - uniphier_tm_set_alert(tdev, i, trip.temperature); - tdev->alert_en[i] = true; - } - if (crit_temp > CRITICAL_TEMP_LIMIT) { + if (twd.crit_temp > CRITICAL_TEMP_LIMIT) { dev_err(dev, "critical trip is over limit(>%d), or not set\n", CRITICAL_TEMP_LIMIT); return -EINVAL;