tree 84106fe38fee5b62d054cd96182c1a2ca8fb3720
parent 49e6979e7e92cf496105b5636f1df0ac17c159c0
author Hui Wang <hui.wang@canonical.com> 1563529138 +0300
committer Dmitry Torokhov <dmitry.torokhov@gmail.com> 1563529235 +0300

Input: alps - fix a mismatch between a condition check and its comment

In the function alps_is_cs19_trackpoint(), we check if the param[1] is
in the 0x20~0x2f range, but the code we wrote for this checking is not
correct:
(param[1] & 0x20) does not mean param[1] is in the range of 0x20~0x2f,
it also means the param[1] is in the range of 0x30~0x3f, 0x60~0x6f...

Now fix it with a new condition checking ((param[1] & 0xf0) == 0x20).

Fixes: 7e4935ccc323 ("Input: alps - don't handle ALPS cs19 trackpoint-only device")
Cc: stable@vger.kernel.org
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>