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Commit a688393b authored by Jiri Kosina's avatar Jiri Kosina
Browse files

HID: explain out-of-range check better 



Extend the comment explaining the condition for discarding
out-of-range values to clarify the cases in which devices don't
provide any logical min/max.

Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent 6f1891d0

drivers/hid/hid-input.c

+5 −1
Original line number Diff line number Diff line
@@ -1042,7 +1042,11 @@ void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct 


	/*

	 * Ignore out-of-range values as per HID specification,

	 * section 5.10 and 6.2.25

	 * section 5.10 and 6.2.25.

	 *

	 * The logical_minimum < logical_maximum check is done so that we

	 * don't unintentionally discard values sent by devices which

	 * don't specify logical min and max.

	 */

	if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&

	    (field->logical_minimum < field->logical_maximum) &&