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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: Henrik Rydberg <rydberg@euromail.se>
Acked-by: Benjamin Tissoires <benjamin.tissoires@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Henrik Rydberg 2012-04-23 12:07:04 +02:00 committed by Jiri Kosina
parent 734c660931
commit 7431fb767d
3 changed files with 4 additions and 2 deletions
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2
drivers/hid/hid-core.c
View File

@ -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);

1
include/linux/mod_devicetable.h
View File

@ -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 {

3
scripts/mod/file2alias.c
View File

@ -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);