Re: [PATCH] usb: Make USB persist default configurable

From: Greg Kroah-Hartman
Date: Mon Mar 18 2013 - 19:08:13 EST

On Wed, Mar 13, 2013 at 03:57:31PM -0700, Julius Werner wrote:
> Commit 9214d1d8 set the USB persist flag as a default for all devices.
> This might be desirable for some distributions, but it certainly has its
> trade-offs... most importantly, it can significantly increase system
> resume time, because the kernel blocks on resuming (and sometimes
> resetting) USB devices before it unfreezes userspace.
> This patch introduces a new config option CONFIG_USB_DEFAULT_PERSIST,
> which allows distributions to make this decision on their own without
> the need to carry a custom patch or revert the kernel's setting in
> userspace.

Why can't you just revert this in userspace? Isn't that easier than
doing a kernel patch and providing an option that we need to now
maintain for pretty much forever?


greg k-h
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