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authorHenrik Rydberg <rydberg@euromail.se>2012-04-23 12:07:04 +0200
committerJiri Kosina <jkosina@suse.cz>2012-05-01 12:54:54 +0200
commit7431fb767d896b7f0048039f2e17707ea057d35a (patch)
tree447b273a486a8855a0d88e905b0dde1b1c38feae
parent734c660931095ae165c0db6ff60558fc4173bfd0 (diff)
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>
-rw-r--r--drivers/hid/hid-core.c2
-rw-r--r--include/linux/mod_devicetable.h1
-rw-r--r--scripts/mod/file2alias.c3
3 files changed, 4 insertions, 2 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
index f932cd533d49..20daee56d325 100644
--- a/drivers/hid/hid-core.c
+++ b/drivers/hid/hid-core.c
@@ -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);
diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h
index 55ed0b0dc610..5db93821f9c7 100644
--- a/include/linux/mod_devicetable.h
+++ b/include/linux/mod_devicetable.h
@@ -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 {
diff --git a/scripts/mod/file2alias.c b/scripts/mod/file2alias.c
index fe967cee7371..056de3104e75 100644
--- a/scripts/mod/file2alias.c
+++ b/scripts/mod/file2alias.c
@@ -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);