http://mariusmonton.com/?p=489

Cc: [email protected]
Reported-and-tested-by: Màrius Monton <[email protected]>
Signed-off-by: Hans de Goede <[email protected]>
---
 drivers/input/mouse/elantech.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
index daaf82f..fad7367 100644
--- a/drivers/input/mouse/elantech.c
+++ b/drivers/input/mouse/elantech.c
@@ -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;
-- 
2.1.0

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