From b45ed06f46737f8c2ee65698f4305409f2386674 Mon Sep 17 00:00:00 2001 From: Zijun Hu Date: Tue, 13 Aug 2024 22:19:32 +0800 Subject: drivers/base: Introduce device_match_t for device finding APIs There are several drivers/base APIs for finding a specific device, and they currently use the following good type for the @match parameter: int (*match)(struct device *dev, const void *data) Since these operations do not modify the caller-provided @*data, this type is worthy of a dedicated typedef: typedef int (*device_match_t)(struct device *dev, const void *data) Advantages of using device_match_t: - Shorter API declarations and definitions - Prevent further APIs from using a bad type for @match So introduce device_match_t and apply it to the existing (bus|class|driver|auxiliary)_find_device() APIs. Signed-off-by: Zijun Hu Link: https://lore.kernel.org/r/20240813-dev_match_api-v3-1-6c6878a99b9f@quicinc.com Signed-off-by: Greg Kroah-Hartman --- include/linux/device/class.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/device/class.h') diff --git a/include/linux/device/class.h b/include/linux/device/class.h index c576b49c55c2..518c9c83d64b 100644 --- a/include/linux/device/class.h +++ b/include/linux/device/class.h @@ -95,7 +95,7 @@ void class_dev_iter_exit(struct class_dev_iter *iter); int class_for_each_device(const struct class *class, const struct device *start, void *data, int (*fn)(struct device *dev, void *data)); struct device *class_find_device(const struct class *class, const struct device *start, - const void *data, int (*match)(struct device *, const void *)); + const void *data, device_match_t match); /** * class_find_device_by_name - device iterator for locating a particular device -- cgit v1.2.3