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| author |   Hans de Goede <hdegoede@redhat.com> | 2015-06-02 10:40:50 -0700 |
|---|---|---|
| committer |   Dmitry Torokhov <dmitry.torokhov@gmail.com> | 2015-06-02 10:43:07 -0700 |
| commit | 5f0ee9d17aae628b22be86966471db65be21f262 (patch) | |
| tree | e61400aa61145e3c7f1ec2d0be2895756ee7556a /drivers/input/mouse/elantech.c | |
| parent | Input: smtpe-ts - wait 50mS until polling for pen-up (diff) | |
| download | linux-dev-5f0ee9d17aae628b22be86966471db65be21f262.tar.xz linux-dev-5f0ee9d17aae628b22be86966471db65be21f262.zip | |
Input: elantech - fix detection of touchpads where the revision matches a known rate
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 <dezeta@klo.es>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Diffstat (limited to 'drivers/input/mouse/elantech.c')
| -rw-r--r-- | drivers/input/mouse/elantech.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/input/mouse/elantech.c b/drivers/input/mouse/elantech.c index 79363b687195..f181d73d9629 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. */ - 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++) |