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Message-ID: <CACVXFVPjx+053r_-QB=8kPCDmk3va3feN9MYdLgpf=eRWGe05A@mail.gmail.com>
Date: Thu, 11 Oct 2012 16:14:02 +0800
From: Ming Lei <ming.lei@...onical.com>
To: Oliver Neukum <oneukum@...e.de>
Cc: "David S. Miller" <davem@...emloft.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
netdev@...r.kernel.org, linux-usb@...r.kernel.org,
Alan Stern <stern@...land.harvard.edu>
Subject: Re: [PATCH 01/12] usbnet: introduce usbnet 3 command helpers
On Thu, Oct 11, 2012 at 12:11 PM, Oliver Neukum <oneukum@...e.de> wrote:
> On Thursday 11 October 2012 11:18:22 Ming Lei wrote:
>> Currently scsi disk can only be runtime suspended when the device is not
>> opened, so are you sure that the paging out above can cause IO on a suspend
>> usb mass storage disk which is not mounted or opened by utility now?
>
> We definitely do not wish to keep it that way. People at Intel are currently working
> on better power management for sd, which would allow full autosuspend.
OK, got it.
For auto-resume situation, it can be solved with switching the gpf_t flag
runtime inside helper, but I think it is better to do it after the sd's
full autosuspend is seen in -next tree.
For error handling case, it is inevitably for usbnet to allocate memory
with GFP_KERNEL because no usbnet drivers have implemented
.pre_reset and .post_reset callback, and no such actual problems
have been reported until now, so it should be OK to not consider the
case now.
So could we merge the patch set[1-11] first?
Thanks,
--
Ming Lei
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