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Commit 271329b3 authored by Hans de Goede's avatar Hans de Goede Committed by Dmitry Torokhov
Browse files

Input: elantech - fix detection of touchpad on ASUS s301l 



Adjust Elantech signature validation to account fo rnewer models of
touchpads.

Cc: stable@vger.kernel.org
Reported-and-tested-by: default avatarMàrius Monton <marius.monton@gmail.com>
Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent a2418fc4

drivers/input/mouse/elantech.c

+7 −0
Original line number Diff line number Diff line
@@ -1331,6 +1331,13 @@ static bool elantech_is_signature_valid(const unsigned char *param) 
	if (param[1] == 0)

		return true;



	/*

	 * Some models have a revision higher then 20. Meaning param[2] may

	 * be 10 or 20, skip the rates check for these.

	 */

	if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)

		return true;



	for (i = 0; i < ARRAY_SIZE(rates); i++)

		if (param[2] == rates[i])

			return false;