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Commit c0bb1f97 authored by Dmitry Torokhov's avatar Dmitry Torokhov
Browse files

Input: get rid of MATCH_BIT() macro 



MATCH_BIT() is ugly and stupid, we have much nicer bitmap_subset() which
does the same and does not hide control flow.

Reported-by: default avatarBaodong Chen <chenbdchenbd@gmail.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 80c99bcd

drivers/input/input.c

+26 −17
Original line number Diff line number Diff line
@@ -844,18 +844,10 @@ int input_set_keycode(struct input_dev *dev, 
}

EXPORT_SYMBOL(input_set_keycode);



#define MATCH_BIT(bit, max) \

		for (i = 0; i < BITS_TO_LONGS(max); i++) \

			if ((id->bit[i] & dev->bit[i]) != id->bit[i]) \

				break; \

		if (i != BITS_TO_LONGS(max)) \

			continue;



static const struct input_device_id *input_match_device(struct input_handler *handler,

							struct input_dev *dev)

{

	const struct input_device_id *id;

	int i;



	for (id = handler->id_table; id->flags || id->driver_info; id++) {
@@ -875,15 +867,32 @@ static const struct input_device_id *input_match_device(struct input_handler *ha 
			if (id->version != dev->id.version)

				continue;



		MATCH_BIT(evbit,  EV_MAX);

		MATCH_BIT(keybit, KEY_MAX);

		MATCH_BIT(relbit, REL_MAX);

		MATCH_BIT(absbit, ABS_MAX);

		MATCH_BIT(mscbit, MSC_MAX);

		MATCH_BIT(ledbit, LED_MAX);

		MATCH_BIT(sndbit, SND_MAX);

		MATCH_BIT(ffbit,  FF_MAX);

		MATCH_BIT(swbit,  SW_MAX);

		if (!bitmap_subset(id->evbit, dev->evbit, EV_MAX))

			continue;



		if (!bitmap_subset(id->keybit, dev->keybit, KEY_MAX))

			continue;



		if (!bitmap_subset(id->relbit, dev->relbit, REL_MAX))

			continue;



		if (!bitmap_subset(id->absbit, dev->absbit, ABS_MAX))

			continue;



		if (!bitmap_subset(id->mscbit, dev->mscbit, MSC_MAX))

			continue;



		if (!bitmap_subset(id->ledbit, dev->ledbit, LED_MAX))

			continue;



		if (!bitmap_subset(id->sndbit, dev->sndbit, SND_MAX))

			continue;



		if (!bitmap_subset(id->ffbit, dev->ffbit, FF_MAX))

			continue;



		if (!bitmap_subset(id->swbit, dev->swbit, SW_MAX))

			continue;



		if (!handler->match || handler->match(handler, dev))

			return id;