svn commit: r333345 - head/sys/dev/e1000

[Matthew Macy]

Can you please try the attached patch? (Note that gmail may insert
carriage returns)

-M

On Tue, May 8, 2018 at 3:10 PM, Mark Johnston <markj at freebsd.org> wrote:
> On Tue, May 08, 2018 at 01:39:45AM +0000, Matt Macy wrote:
>> Author: mmacy
>> Date: Tue May  8 01:39:45 2018
>> New Revision: 333345
>> URL: https://svnweb.freebsd.org/changeset/base/333345
>>
>> Log:
>>   Sleep rather than spin in e1000 when doing long running config operations.
>>
>>   With r333218 it is now possible for drivers to use an sx lock and thus sleep while
>>   waiting on long running operations rather than DELAY().
>>
>>   Reported by:        gallatin
>>   Reviewed by:        sbruno
>>   Approved by:        sbruno
>>   MFC after:  1 month
>>   Sponsored by:       Limelight Networks
>>   Differential Revision:      https://reviews.freebsd.org/D14984
>
> I'm getting a panic during boot with this change: "unknown mac type d".
>
> It occurs while the driver is attaching to:
>
> em0 at pci0:1:0:0: class=0x020000 card=0x7044103c chip=0x105e8086 rev=0x06 hdr=0x00
>     vendor     = 'Intel Corporation'
>     device     = '82571EB Gigabit Ethernet Controller'
>     class      = network
>     subclass   = ethernet
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