On Tue, Jun 02, 2015 at 11:33:37AM +0200, Hans de Goede wrote:
>
> Make the check to skip the rate check more lax, so that it applies
> to all hw_version 4 models.
>
> This fixes the touchpad not being detected properly on Asus PU551LA
> laptops.
>
> Cc: stable@vger.kernel.org
> Reported-and-tested-by: David Zafra Gómez <dez...@klo.es>
> Signed-off-by: Hans de Goede <hdego...@redhat.com>
> ---
> Changes in v2:
> -Update the comment above the check to match the new code
> ---
> drivers/input/mouse/elantech.c | 7 ++++---
> 1 file changed, 4 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c
> index 79363b6..f181d73 100644
> --- a/drivers/input/mouse/elantech.c
> +++ b/drivers/input/mouse/elantech.c
> @@ -1376,10 +1376,11 @@ static bool elantech_is_signature_valid(const
> unsigned char *param)
> return true;
>
> /*
> - * Some models have a revision higher then 20. Meaning param[2] may
> - * be 10 or 20, skip the rates check for these.
> + * Some hw_version >= 4 models have a revision higher then 20. Meaning
> + * that param[2] may be 10 or 20, skip the rates check for these.
> */
Excellent, thanks !
> - if (param[0] == 0x46 && (param[1] & 0xef) == 0x0f && param[2] < 40)
> + if ((param[0] & 0x0f) >= 0x06 && (param[1] & 0xaf) == 0x0f &&
> + param[2] < 40)
> return true;
>
> for (i = 0; i < ARRAY_SIZE(rates); i++)
> --
> 2.4.2
>
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