[Qemu-devel] hid keyboard event handling

[Michael Walle]

Hi Gerd,

i have another issue. This time with the hid keyboard rework (commit 
1ff5eedd). Before this commit, a press of, for example the windows key, 
resulted in two calls of the hs->event() callback. Eg. there were two 
events queued and two callbacks. But after your commit, two events are 
queued (see for loop in hid_keyboard_event()) but there is now only one 
callback.

My input device model (milkymist-softusb.c) polls (hid_keyboard_poll()) 
exactly once per event callback. Actually, i don't see any other way to 
do it because the hid_keyboard_poll() always succeeds even if there is 
no event in the queue.

So at the moment, if you press the windows key, the event queue fills by 
two but only one entry is fetched from the device model and eventually 
the queue is full.

-michael