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Re: sun50i-a64-pinctrl WARN_ON drivers/base/dd.c:349

From Tejun Heo <tj@kernel.org>
Newsgroups linux.kernel
Subject Re: sun50i-a64-pinctrl WARN_ON drivers/base/dd.c:349
Date 2017-03-17 15:50 +0100
Message-ID <tm1my-7VB-25@gated-at.bofh.it> (permalink)
References <tls5r-7wD-9@gated-at.bofh.it> <tls5r-7wD-11@gated-at.bofh.it> <tls5r-7wD-7@gated-at.bofh.it> <tm0Tv-7D7-11@gated-at.bofh.it> <tm1my-7VB-27@gated-at.bofh.it>
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On Fri, Mar 17, 2017 at 10:28:34PM +0800, Icenowy Zheng wrote:
> > It's warning that the device has resources associated with it on
> > probe. There gotta be something fishy going on with the probing
> > sequence. How reproducible is the problem?
> 
> Do you mean in the first probing trial the driver didn't clean up well?

Possibly but devres should have released all resources after the
previous probe failure or driver disassociation, so I have no idea how
there can be resources left on that list.

> With the same driver I didn't see this problem in 4.11-rc{1,2}.

devres hasn't changed, so I have no idea what changed that.  Which
kernels are affected?  Can you bisect if the problem is easily
reproducible?

Thanks.

-- 
tejun

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Thread

Re: sun50i-a64-pinctrl WARN_ON drivers/base/dd.c:349 Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-03-16 02:10 +0100
  Re: sun50i-a64-pinctrl WARN_ON drivers/base/dd.c:349 Tejun Heo <tj@kernel.org> - 2017-03-17 15:20 +0100
    Re: sun50i-a64-pinctrl WARN_ON drivers/base/dd.c:349 Tejun Heo <tj@kernel.org> - 2017-03-17 15:50 +0100
      Re: sun50i-a64-pinctrl WARN_ON drivers/base/dd.c:349 Adam Borowski <kilobyte@angband.pl> - 2017-03-17 17:40 +0100

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