Naming the counter device provides a convenient way to identify it in devres_log events and similar situations. This patch names the counter device by combining the prefix "counter" with the counter device's unique ID. Cc: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx> Signed-off-by: William Breathitt Gray <vilhelm.gray@xxxxxxxxx> --- drivers/counter/counter-core.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/counter/counter-core.c b/drivers/counter/counter-core.c index 7e0957eea094..2ebd9adf0bd2 100644 --- a/drivers/counter/counter-core.c +++ b/drivers/counter/counter-core.c @@ -22,6 +22,8 @@ #include "counter-chrdev.h" #include "counter-sysfs.h" +#define COUNTER_NAME "counter" + /* Provides a unique ID for each counter device */ static DEFINE_IDA(counter_ida); @@ -104,6 +106,10 @@ struct counter_device *counter_alloc(size_t sizeof_priv) goto err_ida_alloc; dev->id = err; + err = dev_set_name(dev, COUNTER_NAME "%d", dev->id); + if (err) + goto err_dev_set_name; + mutex_init(&counter->ops_exist_lock); dev->type = &counter_device_type; dev->bus = &counter_bus_type; @@ -119,6 +125,9 @@ struct counter_device *counter_alloc(size_t sizeof_priv) err_chrdev_add: + kfree(dev_name(dev)); +err_dev_set_name: + ida_free(&counter_ida, dev->id); err_ida_alloc: @@ -250,7 +259,8 @@ static int __init counter_init(void) if (err < 0) return err; - err = alloc_chrdev_region(&counter_devt, 0, COUNTER_DEV_MAX, "counter"); + err = alloc_chrdev_region(&counter_devt, 0, COUNTER_DEV_MAX, + COUNTER_NAME); if (err < 0) goto err_unregister_bus; base-commit: 7b9c8e1a0ca18a62565ee0e28b23baf7b176e96f -- 2.35.1
