Input: allow certain EV_ABS events to bypass all filtering (61994a61) · Commits · 戴 / test

drivers/input/input.c

+23 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,14 @@ MODULE_LICENSE("GPL");

		#define INPUT_DEVICES 256

		/*
		* EV_ABS events which should not be cached are listed here.
		*/
		static unsigned int input_abs_bypass_init_data[] __initdata = {
		0
		};
		static unsigned long input_abs_bypass[BITS_TO_LONGS(ABS_CNT)];

		static LIST_HEAD(input_dev_list);
		static LIST_HEAD(input_handler_list);

		@@ -192,6 +200,11 @@ static void input_handle_event(struct input_dev *dev,
		case EV_ABS:
		if (is_event_supported(code, dev->absbit, ABS_MAX)) {

		if (test_bit(code, input_abs_bypass)) {
		disposition = INPUT_PASS_TO_HANDLERS;
		break;
		}

		value = input_defuzz_abs_event(value,
		dev->abs[code], dev->absfuzz[code]);

		@@ -1634,10 +1647,20 @@ static const struct file_operations input_fops = {
		.open = input_open_file,
		};

		static void __init input_init_abs_bypass(void)
		{
		const unsigned int *p;

		for (p = input_abs_bypass_init_data; *p; p++)
		input_abs_bypass[BIT_WORD(p)] \|= BIT_MASK(p);
		}

		static int __init input_init(void)
		{
		int err;

		input_init_abs_bypass();

		err = class_register(&input_class);
		if (err) {
		printk(KERN_ERR "input: unable to register input_dev class\n");