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Date:   Mon, 14 Sep 2020 14:40:36 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     ogiannou@...il.com
Cc:     kuba@...nel.org, linux-usb@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, olympia.giannou@...ca-geosystems.com
Subject: Re: [PATCH] rndis_host: increase sleep time in the query-response
 loop

From: Olympia Giannou <ogiannou@...il.com>
Date: Fri, 11 Sep 2020 14:17:24 +0000

> Some WinCE devices face connectivity issues via the NDIS interface. They
> fail to register, resulting in -110 timeout errors and failures during the
> probe procedure.
> 
> In this kind of WinCE devices, the Windows-side ndis driver needs quite
> more time to be loaded and configured, so that the linux rndis host queries
> to them fail to be responded correctly on time.
> 
> More specifically, when INIT is called on the WinCE side - no other
> requests can be served by the Client and this results in a failed QUERY
> afterwards.
> 
> The increase of the waiting time on the side of the linux rndis host in
> the command-response loop leaves the INIT process to complete and respond
> to a QUERY, which comes afterwards. The WinCE devices with this special
> "feature" in their ndis driver are satisfied by this fix.
> 
> Signed-off-by: Olympia Giannou <olympia.giannou@...ca-geosystems.com>

Applied, thank you.

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