Commit 070748ed authored by Henrik Rydberg's avatar Henrik Rydberg Committed by Jiri Kosina
Browse files

HID: Create a generic device group 



Devices that do not have a special driver are handled by the generic
driver. This patch does the same thing using device groups; Instead of
forcing a particular driver, the appropriate driver is picked up by
udev. As a consequence, one can now move a device from generic to
specific handling by a simple rebind. By adding a new device id to the
generic driver, the same thing can be done in reverse.

Signed-off-by: default avatarHenrik Rydberg <rydberg@euromail.se>
Acked-by: default avatarBenjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 7431fb76

drivers/hid/hid-core.c

+1 −8
Original line number Diff line number Diff line
@@ -1800,14 +1800,7 @@ static int hid_bus_match(struct device *dev, struct device_driver *drv) 
		!strncmp(hdrv->name, "hid-multitouch", 14))

		return 1;



	if (!hid_match_device(hdev, hdrv))

		return 0;



	/* generic wants all that don't have specialized driver */

	if (!strncmp(hdrv->name, "generic-", 8) && !hid_ignore_special_drivers)

		return !hid_match_id(hdev, hid_have_special_driver);



	return 1;

	return hid_match_device(hdev, hdrv) != NULL;

}



static int hid_device_probe(struct device *dev)

drivers/hid/usbhid/hid-core.c

+1 −1
Original line number Diff line number Diff line
@@ -1505,7 +1505,7 @@ static struct usb_driver hid_driver = { 
};



static const struct hid_device_id hid_usb_table[] = {

	{ HID_USB_DEVICE(HID_ANY_ID, HID_ANY_ID) },

	{ HID_DEVICE(BUS_USB, HID_GROUP_GENERIC, HID_ANY_ID, HID_ANY_ID) },

	{ }

};

include/linux/hid.h

+6 −6
Original line number Diff line number Diff line
@@ -586,12 +586,12 @@ struct hid_descriptor { 
	struct hid_class_descriptor desc[1];

} __attribute__ ((packed));



#define HID_DEVICE(b, ven, prod) \

	.bus = (b), \

	.vendor = (ven), .product = (prod)



#define HID_USB_DEVICE(ven, prod)	HID_DEVICE(BUS_USB, ven, prod)

#define HID_BLUETOOTH_DEVICE(ven, prod)	HID_DEVICE(BUS_BLUETOOTH, ven, prod)

#define HID_DEVICE(b, g, ven, prod)					\

	.bus = (b), .group = (g), .vendor = (ven), .product = (prod)

#define HID_USB_DEVICE(ven, prod)				\

	.bus = BUS_USB, .vendor = (ven), .product = (prod)

#define HID_BLUETOOTH_DEVICE(ven, prod)					\

	.bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)



#define HID_REPORT_ID(rep) \

	.report_type = (rep)

net/bluetooth/hidp/core.c

+1 −1
Original line number Diff line number Diff line
@@ -1196,7 +1196,7 @@ int hidp_get_conninfo(struct hidp_conninfo *ci) 
}



static const struct hid_device_id hidp_table[] = {

	{ HID_BLUETOOTH_DEVICE(HID_ANY_ID, HID_ANY_ID) },

	{ HID_DEVICE(BUS_BLUETOOTH, HID_GROUP_GENERIC, HID_ANY_ID, HID_ANY_ID) },

	{ }

};

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