[PATCH v2 02/32] driver core: Introduce device_match_type() to match device with a device type
Zijun Hu <[email protected]>
| Newsgroups | gmane.linux.kernel.hwmon,gmane.linux.kernel,gmane.comp.video.dri.devel,gmane.linux.ports.arm.mediatek,gmane.linux.ports.arm.kernel,gmane.linux.drivers.video-input-infrastructure,gmane.linux.usb.general,gmane.linux.kernel.gpio,gmane.linux.network,gmane.linux.pwm,gmane.linux.kernel.firewire.devel,gmane.linux.serial,gmane.linux.sound,gmane.linux.iscsi.open-iscsi,gmane.linux.scsi,gmane.linux.ports.sparc,gmane.linux.block,gmane.linux.kernel.efi |
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| Message-ID | <[email protected]> |
From: Zijun Hu <[email protected]> Introduce device_match_type() to simplify operations below: - Test if a device matches with specified device type. - Find a device with specified device type via various device finding APIs. device_find_child() will use it as argument to simplify operations later. Signed-off-by: Zijun Hu <[email protected]> --- 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 a122ea1d84a3b08fce16dd1abdfa7746d31dc430..5bda2edcd83149decd50bb5e9a0ed4267b1f8f6c 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -5239,6 +5239,12 @@ 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); -- 2.34.1