diff options
| author | Zijun Hu <quic_zijuhu@quicinc.com> | 2024-08-13 22:19:32 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-09-03 12:48:51 +0200 |
| commit | b45ed06f46737f8c2ee65698f4305409f2386674 (patch) | |
| tree | 407512769416e7bc7f10c86715e7e8ed5be4eb45 /drivers/base/class.c | |
| parent | f0e5311aa8022107d63c54e2f03684ec097d1394 (diff) | |
| download | lwn-b45ed06f46737f8c2ee65698f4305409f2386674.tar.gz lwn-b45ed06f46737f8c2ee65698f4305409f2386674.zip | |
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 <quic_zijuhu@quicinc.com>
Link: https://lore.kernel.org/r/20240813-dev_match_api-v3-1-6c6878a99b9f@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/class.c')
| -rw-r--r-- | drivers/base/class.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/base/class.c b/drivers/base/class.c index 7b38fdf8e1d7..ae22fa992c04 100644 --- a/drivers/base/class.c +++ b/drivers/base/class.c @@ -433,8 +433,7 @@ EXPORT_SYMBOL_GPL(class_for_each_device); * code. There's no locking restriction. */ 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) { struct subsys_private *sp = class_to_subsys(class); struct class_dev_iter iter; |