Mismatched types when compiling for arm

[AnyTimeTraveler]

When compiling for armv7-unknown-linux-musleabihf, I get two errors like below:

error[E0308]: mismatched types
   --> /cargo/registry/src/github.com-1ecc6299db9ec823/evdev-0.10.2/src/raw.rs:216:47 nix, num-bigint                                                                                                                                
    |
216 |     convert_ioctl_res!(::nix::libc::ioctl(fd, ior!(b'E', 0x20 + ev, len) as ::libc::c_ulong, buf))
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `u32`
    |
help: you can convert a `u32` to an `i32` and panic if the converted value doesn't fit
    |
216 |     convert_ioctl_res!(::nix::libc::ioctl(fd, (ior!(b'E', 0x20 + ev, len) as ::libc::c_ulong).try_into().unwrap(), buf))
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[jeff-hiner]

This fix broke aarch64 on my end:

error[E0308]: mismatched types
   --> src/raw.rs:216:47
    |
216 |     convert_ioctl_res!(::nix::libc::ioctl(fd, request_code_read!(b'E', 0x20 + ev, len) as ::libc::c_ulong, buf))
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `u64`
    |
help: you can convert a `u64` to an `i32` and panic if the converted value doesn't fit
    |
216 |     convert_ioctl_res!(::nix::libc::ioctl(fd, (request_code_read!(b'E', 0x20 + ev, len) as ::libc::c_ulong).try_into().unwrap(), buf))
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error[E0308]: mismatched types
   --> src/raw.rs:226:47
    |
226 | ...(fd, request_code_read!(b'E', 0x40 + abs, ::std::mem::size_of::<input_absinfo>()) as ::libc::c_ulong, buf))
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected `i32`, found `u64`
    |
help: you can convert a `u64` to an `i32` and panic if the converted value doesn't fit
    |
226 |     convert_ioctl_res!(::nix::libc::ioctl(fd, (request_code_read!(b'E', 0x40 + abs, ::std::mem::size_of::<input_absinfo>()) as ::libc::c_ulong).try_into().unwrap(), buf))
    |                                               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

[rlingineni]

Running into this as well! Trying to use with libremarkable

[AnyTimeTraveler]

Running into this as well! Trying to use with libremarkable

Yeah, that's why I initially submitted the fix.
I didn't use libremarkable but evdev directly to only read the input of the Wacom Pen.
I am hoping that this could go into a release soon, so that I can stop using my local patch.

Is there anything I can help with, on the way to the next release?

[coolreader18]

@AnyTimeTraveler do you have a branch you could make a PR for? It would probably be fine to have a single version that just casts as _ so it works no matter the specific int type.