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Re: [PATCH net-next] staging: irda: force to be a kernel module

From David Miller <davem@davemloft.net>
Newsgroups linux.kernel
Subject Re: [PATCH net-next] staging: irda: force to be a kernel module
Date 2017-08-29 19:50 +0200
Message-ID <ujSOe-5C2-11@gated-at.bofh.it> (permalink)
References <ujKQG-L5-17@gated-at.bofh.it> <ujRIu-4WZ-19@gated-at.bofh.it> <ujSuR-5uV-11@gated-at.bofh.it>
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From: Greg KH <gregkh@linuxfoundation.org>
Date: Tue, 29 Aug 2017 19:26:08 +0200

> On Tue, Aug 29, 2017 at 09:35:07AM -0700, David Miller wrote:
>> From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
>> Date: Tue, 29 Aug 2017 11:14:17 +0200
>> 
>> > Now that the IRDA networking code has moved into drivers/staging/, the
>> > link order is changed for when it is initialized if built into the
>> > system.  This can cause a crash when initializing as the netfilter core
>> > hasn't been initialized yet.
>> > 
>> > So force the IRDA code to be built as a module, preventing the crash.
>> > 
>> > Reported-by: kernel test robot <fengguang.wu@intel.com>
>> > Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
>> 
>> I don't think this is reasonable.
>> 
>> IRDA being built in was broken by moving it to staging, so it's a
>> regression and we should find a way to fix it.
> 
> Hm, this is due to netlink coming before irda in the link order before
> this patch series.  I can't change the link order to put all of net/
> before drivers/, which would solve this, and I don't think I can put:
> 	obj-$(CONFIG_IRDA) += ../../drivers/staging/irda/net/
> in a networking Makefile, can I?  Does "../" even work in a Makefile
> like that?
> 
> Any other thoughts?

Change the initialization type in IRDA from subsys_init() to ...
something else?

Amazing!

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[PATCH net-next] staging: irda: update MAINTAINERS Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-08-29 09:10 +0200
  [PATCH net-next] staging: irda: force to be a kernel module Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2017-08-29 11:20 +0200
    Re: [PATCH net-next] staging: irda: force to be a kernel module David Miller <davem@davemloft.net> - 2017-08-29 18:40 +0200
      Re: [PATCH net-next] staging: irda: force to be a kernel module Greg KH <gregkh@linuxfoundation.org> - 2017-08-29 19:30 +0200
        Re: [PATCH net-next] staging: irda: force to be a kernel module Greg KH <gregkh@linuxfoundation.org> - 2017-08-29 19:40 +0200
          Re: [PATCH v2 net-next] irda: fix link order if IRDA is built into  the kernel David Miller <davem@davemloft.net> - 2017-08-29 19:50 +0200
            Re: [PATCH v2 net-next] irda: fix link order if IRDA is built into  the kernel Greg KH <gregkh@linuxfoundation.org> - 2017-08-29 21:10 +0200
          [PATCH v2 net-next] irda: fix link order if IRDA is built into the  kernel Greg KH <gregkh@linuxfoundation.org> - 2017-08-29 19:50 +0200
            [PATCH v3 net-next] staging: irda: fix init level for irda core Greg KH <gregkh@linuxfoundation.org> - 2017-08-30 13:20 +0200
              Re: [PATCH v3 net-next] staging: irda: fix init level for irda core David Miller <davem@davemloft.net> - 2017-08-30 19:20 +0200
        Re: [PATCH net-next] staging: irda: force to be a kernel module David Miller <davem@davemloft.net> - 2017-08-29 19:50 +0200
  Re: [PATCH net-next] staging: irda: update MAINTAINERS David Miller <davem@davemloft.net> - 2017-08-29 18:40 +0200

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