On Wednesday 15 November 2017 14:34:04 Aaron Ma wrote:
> There is a regression of commit 4a646580f793 ("Input: ALPS - fix
> two-finger scroll breakage"), ALPS device fails with log:
>
> psmouse serio1: alps: Rejected trackstick packet from non DualPoint device
>
> ALPS device with id "74 03 28" report OTP[0] data 0xCE after
> commit 4a646580f793, after restore the OTP reading order,
> it becomes to 0x10 as before and reports the right flag.
>
> Fixes: 4a646580f793 ("Input: ALPS - fix two-finger scroll breakage")
> Cc: <stable@xxxxxxxxxxxxxxx>
> Signed-off-by: Aaron Ma <aaron.ma@xxxxxxxxxxxxx>
> ---
> drivers/input/mouse/alps.c | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/drivers/input/mouse/alps.c b/drivers/input/mouse/alps.c
> index 579b899add26..c59b8f7ca2fc 100644
> --- a/drivers/input/mouse/alps.c
> +++ b/drivers/input/mouse/alps.c
> @@ -2562,8 +2562,8 @@ static int alps_set_defaults_ss4_v2(struct psmouse *psmouse,
>
> memset(otp, 0, sizeof(otp));
>
> - if (alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]) ||
> - alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]))
> + if (alps_get_otp_values_ss4_v2(psmouse, 0, &otp[0][0]) ||
> + alps_get_otp_values_ss4_v2(psmouse, 1, &otp[1][0]))
> return -1;
>
> alps_update_device_area_ss4_v2(otp, priv);
Masaki Ota, please look at this patch as it partially revert your commit
4a646580f793 ("Input: ALPS - fix two-finger scroll breakage"). Something
smells here.
--
Pali Rohár
pali.rohar@xxxxxxxxx
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