Commit 7431fb76 authored by Henrik Rydberg's avatar Henrik Rydberg Committed by Jiri Kosina
Browse files

HID: Allow bus wildcard matching 



Most HID drivers do not need to know what bus driver is in use.
A generic group driver can drive any hid device, and the device
list should not need to be duplicated for each new bus.

This patch adds wildcard matching to the HID bus, simplifying device
list handling for group drivers.

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 734c6609

drivers/hid/hid-core.c

+1 −1
Original line number Diff line number Diff line
@@ -1273,7 +1273,7 @@ EXPORT_SYMBOL_GPL(hid_input_report); 
static bool hid_match_one_id(struct hid_device *hdev,

		const struct hid_device_id *id)

{

	return id->bus == hdev->bus &&

	return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&

		(id->group == HID_GROUP_ANY || id->group == hdev->group) &&

		(id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&

		(id->product == HID_ANY_ID || id->product == hdev->product);

include/linux/mod_devicetable.h

+1 −0
Original line number Diff line number Diff line
@@ -132,6 +132,7 @@ struct usb_device_id { 
#define USB_DEVICE_ID_MATCH_INT_PROTOCOL	0x0200



#define HID_ANY_ID				(~0)

#define HID_BUS_ANY				0xffff

#define HID_GROUP_ANY				0x0000



struct hid_device_id {

scripts/mod/file2alias.c

+2 −1
Original line number Diff line number Diff line
@@ -340,7 +340,8 @@ static int do_hid_entry(const char *filename, 
	id->vendor = TO_NATIVE(id->vendor);

	id->product = TO_NATIVE(id->product);



	sprintf(alias, "hid:b%04X", id->bus);

	sprintf(alias, "hid:");

	ADD(alias, "b", id->bus != HID_BUS_ANY, id->bus);

	ADD(alias, "g", id->group != HID_GROUP_ANY, id->group);

	ADD(alias, "v", id->vendor != HID_ANY_ID, id->vendor);

	ADD(alias, "p", id->product != HID_ANY_ID, id->product);

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