From patchwork Mon Dec 4 14:52:22 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. Wysocki" X-Patchwork-Id: 750953 Received: from cloudserver094114.home.pl (cloudserver094114.home.pl [79.96.170.134]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2BBF3FD; Mon, 4 Dec 2023 06:52:55 -0800 (PST) Received: from localhost (127.0.0.1) (HELO v370.home.net.pl) by /usr/run/smtp (/usr/run/postfix/private/idea_relay_lmtp) via UNIX with SMTP (IdeaSmtpServer 5.4.0) id 140b955ce2589623; Mon, 4 Dec 2023 15:52:54 +0100 Received: from kreacher.localnet (unknown [195.136.19.94]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by cloudserver094114.home.pl (Postfix) with ESMTPSA id B702766875B; Mon, 4 Dec 2023 15:52:53 +0100 (CET) From: "Rafael J. Wysocki" To: Daniel Lezcano , Lukasz Luba Cc: Linux PM , LKML , Srinivas Pandruvada , Zhang Rui Subject: [PATCH v3 2/2] thermal: sysfs: Rework the reading of trip point attributes Date: Mon, 04 Dec 2023 15:52:22 +0100 Message-ID: <4855368.GXAFRqVoOG@kreacher> In-Reply-To: <12338384.O9o76ZdvQC@kreacher> References: <12338384.O9o76ZdvQC@kreacher> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CLIENT-IP: 195.136.19.94 X-CLIENT-HOSTNAME: 195.136.19.94 X-VADE-SPAMSTATE: clean X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgedvkedrudejiedgjeduucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohepiedprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehsrhhi nhhivhgrshdrphgrnhgurhhuvhgruggrsehlihhnuhigrdhinhhtvghlrdgtohhmpdhrtghpthhtoheprhhuihdriihhrghnghesihhnthgvlhdrtghomh X-DCC--Metrics: v370.home.net.pl 1024; Body=6 Fuz1=6 Fuz2=6 From: Rafael J. Wysocki Rework the _show() callback functions for the trip point temperature, hysteresis and type attributes to avoid copying the values of struct thermal_trip fields that they do not use and to make them carry out validation checks with the help of check_thermal_zone_and_trip_id(), like the corresponding _store() callback functions. No intentional functional impact. Signed-off-by: Rafael J. Wysocki --- v2 -> v3: Drop a redundant 'ret' check at the end of trip_point_hyst_show. v1 -> v2: Do not drop thermal zone locking from the _store() callback functions. --- drivers/thermal/thermal_sysfs.c | 55 ++++++++++++++++++++-------------------- 1 file changed, 28 insertions(+), 27 deletions(-) Index: linux-pm/drivers/thermal/thermal_sysfs.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_sysfs.c +++ linux-pm/drivers/thermal/thermal_sysfs.c @@ -96,25 +96,25 @@ trip_point_type_show(struct device *dev, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); - struct thermal_trip trip; - int trip_id, result; + enum thermal_trip_type type; + int trip_id, ret; if (sscanf(attr->attr.name, "trip_point_%d_type", &trip_id) != 1) return -EINVAL; mutex_lock(&tz->lock); - if (device_is_registered(dev)) - result = __thermal_zone_get_trip(tz, trip_id, &trip); - else - result = -ENODEV; + ret = check_thermal_zone_and_trip_id(dev, tz, trip_id); + if (ret) { + mutex_unlock(&tz->lock); + return ret; + } - mutex_unlock(&tz->lock); + type = tz->trips[trip_id].type; - if (result) - return result; + mutex_unlock(&tz->lock); - switch (trip.type) { + switch (type) { case THERMAL_TRIP_CRITICAL: return sprintf(buf, "critical\n"); case THERMAL_TRIP_HOT: @@ -175,25 +175,24 @@ trip_point_temp_show(struct device *dev, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); - struct thermal_trip trip; - int trip_id, ret; + int trip_id, ret, temp; if (sscanf(attr->attr.name, "trip_point_%d_temp", &trip_id) != 1) return -EINVAL; mutex_lock(&tz->lock); - if (device_is_registered(dev)) - ret = __thermal_zone_get_trip(tz, trip_id, &trip); - else - ret = -ENODEV; + ret = check_thermal_zone_and_trip_id(dev, tz, trip_id); + if (ret) { + mutex_unlock(&tz->lock); + return ret; + } - mutex_unlock(&tz->lock); + temp = tz->trips[trip_id].temperature; - if (ret) - return ret; + mutex_unlock(&tz->lock); - return sprintf(buf, "%d\n", trip.temperature); + return sprintf(buf, "%d\n", temp); } static ssize_t @@ -243,22 +242,24 @@ trip_point_hyst_show(struct device *dev, char *buf) { struct thermal_zone_device *tz = to_thermal_zone(dev); - struct thermal_trip trip; - int trip_id, ret; + int trip_id, ret, hyst; if (sscanf(attr->attr.name, "trip_point_%d_hyst", &trip_id) != 1) return -EINVAL; mutex_lock(&tz->lock); - if (device_is_registered(dev)) - ret = __thermal_zone_get_trip(tz, trip_id, &trip); - else - ret = -ENODEV; + ret = check_thermal_zone_and_trip_id(dev, tz, trip_id); + if (ret) { + mutex_unlock(&tz->lock); + return ret; + } + + hyst = tz->trips[trip_id].hysteresis; mutex_unlock(&tz->lock); - return ret ? ret : sprintf(buf, "%d\n", trip.hysteresis); + return sprintf(buf, "%d\n", hyst); } static ssize_t