diff options
| author | Hans de Goede <hdegoede@redhat.com> | 2015-06-02 10:40:50 -0700 |
|---|---|---|
| committer | Sasha Levin <sasha.levin@oracle.com> | 2015-07-03 12:34:37 -0400 |
| commit | ec5e9c997af5bb8cab9e61bb004c0acc0c5d1c1e (patch) | |
| tree | 2e498643c6ee2524084871b13a4c7e8536cbfc39 /drivers | |
| parent | e73268af3e137b1f69d0f82d80aa88e0e8c7cbbe (diff) | |
Input: elantech - fix detection of touchpads where the revision matches a known rate
[ Upstream commit 5f0ee9d17aae628b22be86966471db65be21f262 ]
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>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Diffstat (limited to 'drivers')
| -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 991dc6b20a58..aa7f9209ac6c 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++) |