Fix FOO_MAX off-by-one

In linux/input.h each section's (e.g. ABS) FOO_MAX is the maximum FOO
value. Recent kernels define FOO_CNT as the maximum number of FOO there
will ever be. Hence using FOO_MAX to size the bit vectors representing
the capabilities of an evdev device is off by one.

Define FOO_CNT values for use with Linux kernels which lack them. Use
FOO_CNT whenever we need to know the number of bits needed -- usually to
calculate the number of longs needed.

When iterating over the values FOO_MAX still seems appropriate however
the loop test should include FOO_MAX rather than skip it.

Signed-off-by: Matt Helsley <matt.helsley@gmail.com>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>

0 files changed, 0 insertions, 0 deletions