Input: elantech - fix detection of touchpad on ASUS s301l

[platform/adaptation/renesas_rcar/renesas_kernel.git] / drivers / input / mouse / elantech.c

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index 233516a..0b75b57 100644 (file)
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -1253,6 +1253,13 @@ 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;