Messages in this thread | | | Date | Thu, 27 Jul 2006 08:47:58 +0800 | From | liyu <> | Subject | Re: [PATCH 1/3] usbhid: Driver for microsoft natural ergonomic keyboard 4000 |
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Josef Sipek wrote: > +#define map_key(c) \ > + do { \ > + usage->code = c; \ > + usage->type = EV_KEY; \ > + set_bit(c,input->keybit); \ > + } while (0) > > I'm not quite sure where usage is coming from. Some magical global variable? > Eeek. > > Josef "Jeff" Sipek. > > These macroes like map_key() only use in nek4k_setup_usage() and ne4k_clear_usage(), so the variable "usage" is coming from their parameter.
PS: these macroes are modifed from hid-input.c
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