linux-kernel - Re: [PATCH 0/7] HID: picoLCD updates

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Date:	Sat, 18 Aug 2012 20:11:13 -0400 (EDT)
From:	Alan Stern <stern@...land.harvard.edu>
To:	Bruno Prémont <bonbons@...ux-vserver.org>
cc:	Jiri Kosina <jkosina@...e.cz>, <linux-input@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-fbdev@...r.kernel.org>
Subject: 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

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