linux-kernel - Re: [PATCH 3/4] Add driver for OHCI firewire host controllers.

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Message-ID: <45897CAC.1050905@redhat.com>
Date:	Wed, 20 Dec 2006 13:10:52 -0500
From:	Kristian Høgsberg <krh@...hat.com>
To:	Robert Hancock <hancockr@...w.ca>
CC:	linux-kernel@...r.kernel.org, linux1394-devel@...ts.sourceforge.net
Subject: Re: [PATCH 3/4] Add driver for OHCI firewire host controllers.

Robert Hancock wrote:
> Kristian Høgsberg wrote:
...
>> +static struct pci_driver fw_ohci_pci_driver = {
>> +    .name        = ohci_driver_name,
>> +    .id_table    = pci_table,
>> +    .probe        = pci_probe,
>> +    .remove        = pci_remove,
>> +};
> 
> How about suspend/resume support? Lots of laptops have OHCI 1394 and 
> full suspend/resume support is something that the current ohci1394 
> driver lacks.

Yes, good point, that needs to work too.  What I'm thinking here is that we 
need to turn off the link-on bit in the self ID packets we send out and then 
generate a bus reset before we suspend.  It shouldn't be necessary to change 
upper level drivers, the SBP-2 driver should just remaind logged in to the 
storage device.  When resuming, we re-enable the link-on bit and do a bus 
reset again, and should be back in operation.

Kristian

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