From mboxrd@z Thu Jan  1 00:00:00 1970
From: rgroner@rtd.com (Rob Groner)
Date: Wed, 30 Mar 2016 17:24:40 -0400
Subject: Did PCI/IRQ allocation change significantly after 4.2 kernel?
In-Reply-To: <20160330005717.GA19184@kroah.com>
References: <20160329144244.GA24067@kroah.com>
	<20160329144314.GA24237@kroah.com>
	<1459265269.2010.7.camel@rtd-VirtualBox>
	<20160329154353.GA26108@kroah.com>
	<1459276021.2010.19.camel@rtd-VirtualBox>
	<20160329183851.GA9186@kroah.com>
	<1459278706.2010.24.camel@rtd-VirtualBox>
	<20160329191840.GA30945@kroah.com> <20160329192244.GA31666@kroah.com>
	<1459282282.2010.37.camel@rtd-VirtualBox>
	<20160330005717.GA19184@kroah.com>
Message-ID: <1459373080.2736.1.camel@kernel-dev>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

And, we have a winner!

-----------------------------------------------------------------------
rtd at kernel-dev:~/git/kernels/linux$ git bisect good
991de2e59090e55c65a7f59a049142e3c480f7bd is the first bad commit
commit 991de2e59090e55c65a7f59a049142e3c480f7bd
Author: Jiang Liu <jiang.liu@linux.intel.com>
Date:   Wed Jun 10 16:54:59 2015 +0800

    PCI, x86: Implement pcibios_alloc_irq() and pcibios_free_irq()
    
    To support IOAPIC hotplug, we need to allocate PCI IRQ resources on
demand
    and free them when not used anymore.
    
    Implement pcibios_alloc_irq() and pcibios_free_irq() to dynamically
    allocate and free PCI IRQs.
    
    Remove mp_should_keep_irq(), which is no longer used.
    
    [bhelgaas: changelog]
    Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
    Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
    Acked-by: Thomas Gleixner <tglx@linutronix.de>

:040000 040000 765e2d5232d53247ec260b34b51589c3bccb36ae
f680234a27685e94b1a35ae2a7218f8eafa9071a M	arch
:040000 040000 d55a682bcde72682e883365e88ad1df6186fd54d
f82c470a04a6845fcf5e0aa934512c75628f798d M	drivers
----------------------------------------------------------------

I'll sort out what all of that means tomorrow...

Rob