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HID: do not assume HAT Switch logical max < 8

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Turns out that the code can handle a greater range, but the data stored
can not. This is problematic on the Raptor Mach 2 joystick which
logical max is 239. The kernel interprets it as `-15` and thus ignores
the Hat Switch handling.

Link: https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/issues/17
Link: https://lore.kernel.org/r/20240410-bpf_sources-v1-1-a8bf16033ef8@kernel.org
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Benjamin Tissoires <bentiss@kernel.org>
This commit is contained in:
Benjamin Tissoires 2024-04-10 19:19:21 +02:00
parent b912cf0420
commit 65ad580a14
1 changed files with 3 additions and 3 deletions
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6
include/linux/hid.h
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@ -474,9 +474,9 @@ struct hid_usage {
__s8 wheel_factor; /* 120/resolution_multiplier */
__u16 code; /* input driver code */
__u8 type; /* input driver type */
__s8 hat_min; /* hat switch fun */
__s8 hat_max; /* ditto */
__s8 hat_dir; /* ditto */
__s16 hat_min; /* hat switch fun */
__s16 hat_max; /* ditto */
__s16 hat_dir; /* ditto */
__s16 wheel_accumulated; /* hi-res wheel */
};