Re: [PATCH v4 09/11] driver core: Introduce an device matching API device_match_type()
From: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Date: 2024-12-23 20:46:10
Also in:
arm-scmi, dri-devel, linux-block, linux-cxl, linux-efi, linux-gpio, linux-hwmon, linux-media, linux-mediatek, linux-pwm, linux-remoteproc, linux-scsi, linux-serial, linux-sound, linux-usb, lkml, nvdimm, sparclinux
On Wed, 11 Dec 2024 08:08:11 +0800 Zijun Hu [off-list ref] wrote:
From: Zijun Hu <redacted> Introduce device_match_type() for purposes below: - Test if a device matches with a specified device type. - As argument of various device finding APIs to find a device with specified type. device_find_child() will use it to simplify operations later. Signed-off-by: Zijun Hu <redacted>
Seems useful enough to have a generic helper. Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
quoted hunk ↗ jump to hunk
--- drivers/base/core.c | 6 ++++++ include/linux/device/bus.h | 1 + 2 files changed, 7 insertions(+)diff --git a/drivers/base/core.c b/drivers/base/core.c index 289f2dafa8f3831931d0f316d66ee12c2cb8a2e1..8bdbc9e657e832a063542391426f570ccb5c18b9 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c@@ -5228,6 +5228,12 @@ int device_match_name(struct device *dev, const void *name) } EXPORT_SYMBOL_GPL(device_match_name); +int device_match_type(struct device *dev, const void *type) +{ + return dev->type == type; +} +EXPORT_SYMBOL_GPL(device_match_type); + int device_match_of_node(struct device *dev, const void *np) { return dev->of_node == np;diff --git a/include/linux/device/bus.h b/include/linux/device/bus.h index cdc4757217f9bb4b36b5c3b8a48bab45737e44c5..bc3fd74bb763e6d2d862859bd2ec3f0d443f2d7a 100644 --- a/include/linux/device/bus.h +++ b/include/linux/device/bus.h@@ -131,6 +131,7 @@ typedef int (*device_match_t)(struct device *dev, const void *data); /* Generic device matching functions that all busses can use to match with */ int device_match_name(struct device *dev, const void *name); +int device_match_type(struct device *dev, const void *type); int device_match_of_node(struct device *dev, const void *np); int device_match_fwnode(struct device *dev, const void *fwnode); int device_match_devt(struct device *dev, const void *pdevt);