From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Warren <swarren@wwwdotorg.org>
Date: Mon, 14 Mar 2016 11:06:42 -0600
Subject: [U-Boot] [PATCH v3 2/4] usb: Remove 200 ms delay in
 usb_hub_port_connect_change()
In-Reply-To: <1457950693-564-3-git-send-email-sr@denx.de>
References: <1457950693-564-1-git-send-email-sr@denx.de>
 <1457950693-564-3-git-send-email-sr@denx.de>
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On 03/14/2016 04:18 AM, Stefan Roese wrote:
> This patch removes 2 mdelay(200) calls from usb_hub_port_connect_change().
> These delays don't seem to be necessary. At least not in my tests. Here
> the number for a custom x86 Bay Trail board (not in mainline yet) with
> a quite large and complex USB hub infrastructure.
>
> Without this patch:
> starting USB...
> USB0:   USB EHCI 1.00
> scanning bus 0 for devices... 9 USB Device(s) found
>
> time: 28.415 seconds
>
> With this patch:
> starting USB...
> USB0:   USB EHCI 1.00
> scanning bus 0 for devices... 9 USB Device(s) found
>
> time: 24.003 seconds
>
> So ~4.5 seconds of USB scanning time reduction.
>
> Signed-off-by: Stefan Roese <sr@denx.de>
> Cc: Simon Glass <sjg@chromium.org>
> Cc: Hans de Goede <hdegoede@redhat.com>
> Cc: Stephen Warren <swarren@nvidia.com>
> Cc: Marek Vasut <marex@denx.de>
>
> ---
>
> Changes in v3: None
> Changes in v2:
> - Make this change unconditional
> - Add Acked-by / Tested-by from Hans and Stephen

I meant to mention: I think you forgot to actually do that. There aren't 
any acks in the commit description.