From patchwork Mon Aug 12 13:56:23 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Rafael J. 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Wysocki" To: Linux PM Cc: LKML , Daniel Lezcano , Lukasz Luba , Zhang Rui Subject: [PATCH v2 04/17] thermal: core: Clean up cdev binding/unbinding functions Date: Mon, 12 Aug 2024 15:56:23 +0200 Message-ID: <2819322.BEx9A2HvPv@rjwysocki.net> In-Reply-To: <114901234.nniJfEyVGO@rjwysocki.net> References: <114901234.nniJfEyVGO@rjwysocki.net> 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: spam:low X-VADE-SPAMCAUSE: gggruggvucftvghtrhhoucdtuddrgeeftddruddttddgjedtucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecujffqoffgrffnpdggtffipffknecuuegrihhlohhuthemucduhedtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenogfuphgrmhfkphculdeftddtmdenucfjughrpefhvfevufffkfgjfhgggfgtsehtufertddttdejnecuhfhrohhmpedftfgrfhgrvghlucflrdcuhgihshhotghkihdfuceorhhjfiesrhhjfiihshhotghkihdrnhgvtheqnecuggftrfgrthhtvghrnhepvdffueeitdfgvddtudegueejtdffteetgeefkeffvdeftddttdeuhfegfedvjefhnecukfhppeduleehrddufeeirdduledrleegnecuufhprghmkfhppeduleehrddufeeirdduledrleegnecuvehluhhsthgvrhfuihiivgepudenucfrrghrrghmpehinhgvthepudelhedrudefiedrudelrdelgedphhgvlhhopehkrhgvrggthhgvrhdrlhhotggrlhhnvghtpdhmrghilhhfrhhomhepfdftrghfrggvlhculfdrucghhihsohgtkhhifdcuoehrjhifsehrjhifhihsohgtkhhirdhnvghtqedpnhgspghrtghpthhtohephedprhgtphhtthhopehlihhnuhigqdhpmhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopehlihhnuhigqdhkvghrnhgvlhesvhhgvghrrdhkvghrnhgvlhdrohhrghdprhgtphhtthhopegurghnihgvlhdrlhgviigtrghnoheslhhinhgrrhhordhorhhgpdhrtghpthhtoheplhhukhgrshiirdhluhgsrgesrghrmhdrtghomhdprhgtphhtthhopehruhhirdiihhgrnhhgsehinhhtvghlrdgtohhm X-DCC--Metrics: v370.home.net.pl 1024; Body=5 Fuz1=5 Fuz2=5 From: Rafael J. Wysocki Add a new label to thermal_bind_cdev_to_trip() and use it to eliminate two redundant !result check from that function, rename a label in thermal_unbind_cdev_from_trip() to reflect its actual purpose and adjust some white space in these functions. No intentional functional impact. Signed-off-by: Rafael J. Wysocki --- v1 -> v2: No changes. --- drivers/thermal/thermal_core.c | 32 ++++++++++++++++++-------------- 1 file changed, 18 insertions(+), 14 deletions(-) Index: linux-pm/drivers/thermal/thermal_core.c =================================================================== --- linux-pm.orig/drivers/thermal/thermal_core.c +++ linux-pm/drivers/thermal/thermal_core.c @@ -806,6 +806,7 @@ int thermal_bind_cdev_to_trip(struct the dev = kzalloc(sizeof(*dev), GFP_KERNEL); if (!dev) return -ENOMEM; + dev->tz = tz; dev->cdev = cdev; dev->trip = trip; @@ -821,8 +822,7 @@ int thermal_bind_cdev_to_trip(struct the dev->id = result; sprintf(dev->name, "cdev%d", dev->id); - result = - sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name); + result = sysfs_create_link(&tz->device.kobj, &cdev->device.kobj, dev->name); if (result) goto release_ida; @@ -849,24 +849,26 @@ int thermal_bind_cdev_to_trip(struct the mutex_lock(&tz->lock); mutex_lock(&cdev->lock); - list_for_each_entry(pos, &tz->thermal_instances, tz_node) + + list_for_each_entry(pos, &tz->thermal_instances, tz_node) { if (pos->trip == trip && pos->cdev == cdev) { result = -EEXIST; - break; + goto remove_weight_file; } - if (!result) { - list_add_tail(&dev->tz_node, &tz->thermal_instances); - list_add_tail(&dev->cdev_node, &cdev->thermal_instances); - atomic_set(&tz->need_update, 1); - - thermal_governor_update_tz(tz, THERMAL_TZ_BIND_CDEV); } + + list_add_tail(&dev->tz_node, &tz->thermal_instances); + list_add_tail(&dev->cdev_node, &cdev->thermal_instances); + atomic_set(&tz->need_update, 1); + + thermal_governor_update_tz(tz, THERMAL_TZ_BIND_CDEV); + mutex_unlock(&cdev->lock); mutex_unlock(&tz->lock); - if (!result) - return 0; + return 0; +remove_weight_file: device_remove_file(&tz->device, &dev->weight_attr); remove_trip_file: device_remove_file(&tz->device, &dev->attr); @@ -914,6 +916,7 @@ int thermal_unbind_cdev_from_trip(struct mutex_lock(&tz->lock); mutex_lock(&cdev->lock); + list_for_each_entry_safe(pos, next, &tz->thermal_instances, tz_node) { if (pos->trip == trip && pos->cdev == cdev) { list_del(&pos->tz_node); @@ -923,15 +926,16 @@ int thermal_unbind_cdev_from_trip(struct mutex_unlock(&cdev->lock); mutex_unlock(&tz->lock); - goto unbind; + goto free; } } + mutex_unlock(&cdev->lock); mutex_unlock(&tz->lock); return -ENODEV; -unbind: +free: device_remove_file(&tz->device, &pos->weight_attr); device_remove_file(&tz->device, &pos->attr); sysfs_remove_link(&tz->device.kobj, pos->name);