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Date: Thu, 23 Apr 2015 11:20:46 -0700 From: Dmitry Torokhov <dmitry.torokhov@...il.com> To: Henrik Rydberg <rydberg@...math.org> Cc: Jiri Kosina <jkosina@...e.cz>, Benjamin Tissoires <benjamin.tissoires@...hat.com>, "linux-input@...r.kernel.org" <linux-input@...r.kernel.org>, lkml <linux-kernel@...r.kernel.org> Subject: Re: [PATCH v2] Input - mt: Fix input_mt_get_slot_by_key On Thu, Apr 23, 2015 at 07:10:55PM +0200, Henrik Rydberg wrote: > > "Creation, replacement and destruction of contacts is achieved by > > modifying the ABS_MT_TRACKING_ID of the associated slot. A > > non-negative tracking id is interpreted as a contact, and the value -1 > > denotes an unused slot. A tracking id not previously present is > > considered new, and a tracking id no longer present is considered > > removed." > > > > If some userspace is confused with missing -1 tracking ID for that > > slot, that userspace should be fixed. > > I agree. Some userland applications work with add/remove out of convenience, and > cannot handle the more compressed notation the kernel slot handling allows. > Fixing those applications will be a good thing. > > Unfortunately the patch already appeared in Linus' tree... It's in 4.1-rc0 so we can just revert it. -- Dmitry -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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