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Input: elantech - fix detection of touchpad on ASUS s301l
commit 271329b3c7
upstream.
Adjust Elantech signature validation to account fo rnewer models of
touchpads.
Reported-and-tested-by: Màrius Monton <marius.monton@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Zefan Li <lizefan@huawei.com>
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@ -1218,6 +1218,13 @@ static bool elantech_is_signature_valid(const unsigned char *param)
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if (param[1] == 0)
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return true;
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/*
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* Some models have a revision higher then 20. Meaning param[2] may
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* be 10 or 20, skip the rates check for these.
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*/
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if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)
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return true;
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for (i = 0; i < ARRAY_SIZE(rates); i++)
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if (param[2] == rates[i])
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return false;
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