Re: [PATCH 0/7] HID: picoLCD updates

On Sat, 18 Aug 2012, Bruno Prémont wrote:

One thing I just though about, how does usbhid handle the calls to
usbhid_submit_report() when hid_hw_stop()/hid_hw_close() have already
been called?

Looks like they aren't synchronized at all.  That's a bug.  
usbhid_submit_report() should check the HID_DISCONNECTED flag.

I will attempt to see if it makes a difference to shortcut my
usbhid_submit_report() calls from the point on I have called hid_hw_close()...

I don't know bout hid_hw_close().  Certainly no more reports should be 
submitted following usbhid_stop().

Alan Stern