From mboxrd@z Thu Jan  1 00:00:00 1970
From: greg@kroah.com (Greg KH)
Date: Wed, 20 Jun 2018 21:31:12 +0900
Subject: How to correctly load a driver without device tree?
In-Reply-To: <578ab0bd-b8e1-8270-bc04-dc12cf6f8ddb@163.com>
References: <4c3432d4.7dbf.1641be90140.Coremail.kipade@163.com>
 <20180620080117.GA6735@kroah.com>
 <578ab0bd-b8e1-8270-bc04-dc12cf6f8ddb@163.com>
Message-ID: <20180620123112.GA7358@kroah.com>
To: kernelnewbies@lists.kernelnewbies.org
List-Id: kernelnewbies.lists.kernelnewbies.org

On Wed, Jun 20, 2018 at 04:30:40PM +0800, kipade wrote:
> That's a usb host driver. As I know, the whole usb subsystem
> initialization would take up to 2 seconds while booting. In
> another word, that will make the system booting time more
> longer. So, I have to build all the usb driver as module and
> insert them latter, when the system was usable.

Then use async probing and/or deferred probing.  Or even better yet, fix
the driver to not wait 2 seconds when booting, that should not happen.

good luck!

greg k-h