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Commit c554bb04 authored by Benjamin Tissoires's avatar Benjamin Tissoires Committed by Jiri Kosina
Browse files

HID: input: append a suffix matching the application 



Given that we create one input node per application, we should name
the input node accordingly to not lose userspace.

Signed-off-by: default avatarBenjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent f07b3c1d

drivers/hid/hid-input.c

+59 −8
Original line number Diff line number Diff line
@@ -1500,15 +1500,56 @@ static void report_features(struct hid_device *hid) 
		}

}



static struct hid_input *hidinput_allocate(struct hid_device *hid)

static struct hid_input *hidinput_allocate(struct hid_device *hid,

					   unsigned int application)

{

	struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);

	struct input_dev *input_dev = input_allocate_device();

	if (!hidinput || !input_dev) {

		kfree(hidinput);

		input_free_device(input_dev);

		hid_err(hid, "Out of memory during hid input probe\n");

		return NULL;

	const char *suffix = NULL;



	if (!hidinput || !input_dev)

		goto fail;



	if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&

	    hid->maxapplication > 1) {

		switch (application) {

		case HID_GD_KEYBOARD:

			suffix = "Keyboard";

			break;

		case HID_GD_KEYPAD:

			suffix = "Keypad";

			break;

		case HID_GD_MOUSE:

			suffix = "Mouse";

			break;

		case HID_DG_STYLUS:

			suffix = "Pen";

			break;

		case HID_DG_TOUCHSCREEN:

			suffix = "Touchscreen";

			break;

		case HID_DG_TOUCHPAD:

			suffix = "Touchpad";

			break;

		case HID_GD_SYSTEM_CONTROL:

			suffix = "System Control";

			break;

		case HID_CP_CONSUMER_CONTROL:

			suffix = "Consumer Control";

			break;

		case HID_GD_WIRELESS_RADIO_CTLS:

			suffix = "Wireless Radio Control";

			break;

		default:

			break;

		}

	}



	if (suffix) {

		hidinput->name = kasprintf(GFP_KERNEL, "%s %s",

					   hid->name, suffix);

		if (!hidinput->name)

			goto fail;

	}



	input_set_drvdata(input_dev, hid);
@@ -1518,7 +1559,7 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid) 
	input_dev->setkeycode = hidinput_setkeycode;

	input_dev->getkeycode = hidinput_getkeycode;



	input_dev->name = hid->name;

	input_dev->name = hidinput->name ? hidinput->name : hid->name;

	input_dev->phys = hid->phys;

	input_dev->uniq = hid->uniq;

	input_dev->id.bustype = hid->bus;
@@ -1533,6 +1574,12 @@ static struct hid_input *hidinput_allocate(struct hid_device *hid) 
	INIT_LIST_HEAD(&hidinput->reports);



	return hidinput;



fail:

	kfree(hidinput);

	input_free_device(input_dev);

	hid_err(hid, "Out of memory during hid input probe\n");

	return NULL;

}



static bool hidinput_has_been_populated(struct hid_input *hidinput)
@@ -1578,6 +1625,7 @@ static void hidinput_cleanup_hidinput(struct hid_device *hid, 


	list_del(&hidinput->list);

	input_free_device(hidinput->input);

	kfree(hidinput->name);



	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {

		if (k == HID_OUTPUT_REPORT &&
@@ -1646,6 +1694,7 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) 
	struct hid_driver *drv = hid->driver;

	struct hid_report *report;

	struct hid_input *next, *hidinput = NULL;

	unsigned int application;

	int i, k;



	INIT_LIST_HEAD(&hid->inputs);
@@ -1678,6 +1727,8 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) 
			if (!report->maxfield)

				continue;



			application = report->application;



			/*

			 * Find the previous hidinput report attached

			 * to this report id.
@@ -1689,7 +1740,7 @@ int hidinput_connect(struct hid_device *hid, unsigned int force) 
				hidinput = hidinput_match_application(report);



			if (!hidinput) {

				hidinput = hidinput_allocate(hid);

				hidinput = hidinput_allocate(hid, application);

				if (!hidinput)

					goto out_unwind;

			}

include/linux/hid.h

+1 −0
Original line number Diff line number Diff line
@@ -512,6 +512,7 @@ struct hid_input { 
	struct list_head list;

	struct hid_report *report;

	struct input_dev *input;

	const char *name;

	bool registered;

	struct list_head reports;	/* the list of reports */

};