Input: add match() method to input hanlders
Get rid of blacklist in input handler structure and instead allow
handlers to define their own match() method to perform fine-grained
filtering of supported devices.
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/drivers/char/keyboard.c b/drivers/char/keyboard.c
index cbf64b9..ada25bb 100644
--- a/drivers/char/keyboard.c
+++ b/drivers/char/keyboard.c
@@ -1323,6 +1323,21 @@
schedule_console_callback();
}
+static bool kbd_match(struct input_handler *handler, struct input_dev *dev)
+{
+ int i;
+
+ if (test_bit(EV_SND, dev->evbit))
+ return true;
+
+ if (test_bit(EV_KEY, dev->evbit))
+ for (i = KEY_RESERVED; i < BTN_MISC; i++)
+ if (test_bit(i, dev->keybit))
+ return true;
+
+ return false;
+}
+
/*
* When a keyboard (or other input device) is found, the kbd_connect
* function is called. The function then looks at the device, and if it
@@ -1334,14 +1349,6 @@
{
struct input_handle *handle;
int error;
- int i;
-
- for (i = KEY_RESERVED; i < BTN_MISC; i++)
- if (test_bit(i, dev->keybit))
- break;
-
- if (i == BTN_MISC && !test_bit(EV_SND, dev->evbit))
- return -ENODEV;
handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
if (!handle)
@@ -1407,6 +1414,7 @@
static struct input_handler kbd_handler = {
.event = kbd_event,
+ .match = kbd_match,
.connect = kbd_connect,
.disconnect = kbd_disconnect,
.start = kbd_start,