From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Mon, 1 Jun 2015 11:55:56 +0200 Subject: [PATCH] fix n900 dts file to work around 4.1 touchscreen regression on n900 In-Reply-To: <20150529203456.GC22083@amd> References: <20150527145837.GA13223@earth> <20150529190816.GA20232@amd> <20150529192505.GA28987@amd> <20150529193211.GA7599@amd> <20150529194955.GV2026@saruman.tx.rr.com> <20150529195629.GA9811@amd> <20150529201745.GC17267@lukather> <20150529202123.GY2026@saruman.tx.rr.com> <20150529202954.GA26494@localhost> <20150529203456.GC22083@amd> Message-ID: <20150601095556.GH17267@lukather> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Fri, May 29, 2015 at 10:34:56PM +0200, Pavel Machek wrote: > Hi! > > > > > single DT, you don't even use that property in your driver, and now > > > > that you realise you meant something else, you want the code that > > > > > > not Pali, Sebastian. > > > > > > > actually parse the *right* property and does the right thing, that all > > > > other DT agree (and depend on) to be reverted? > > > > > > We shouldn't revert, that I agree. But both properties should be parsed. > > > > No. If the property is wrong, and nobody parsed it, I do not see any reason to > > start now. > > Agreed. > > But that's not what I'm asking. See a changelog of > 3eea8b5d68c801fec788b411582b803463834752 and compare it with what it > actually does. > > It is buggy. If fuzz is specified but maximum is not, it overwites > maximum with zero. If maximum is not set, you'll have other issues anyway. But it really boils down on what the default behaviour should be. > Plus it introduces new failure "if (!test_bit(axis, dev->absbit))". It's not a new failure, it's testing against stupid code. If an axis is setup in the DT but not registered in the driver, something is wrong, most probably the DT. > Plus it fails to distinguish between "value not specified in the dt" > and "zero is specified in the dt". Again, default behaviour. > The 3eea8b5d68c801fec788b411582b803463834752 is just bad. You were very welcome to review this patch at the time and/or suggest a fix that pleases everyone. Maxime -- Maxime Ripard, Free Electrons Embedded Linux, Kernel and Android engineering http://free-electrons.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: