netdev - Re: [PATCHv2] usb: hso: obey DMA rules in tiocmget

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Message-Id: <20191017.150559.2055573378138455377.davem@davemloft.net>
Date:   Thu, 17 Oct 2019 15:05:59 -0400 (EDT)
From:   David Miller <davem@...emloft.net>
To:     oneukum@...e.com
Cc:     netdev@...r.kernel.org, johan@...nel.org
Subject: Re: [PATCHv2] usb: hso: obey DMA rules in tiocmget

From: Oliver Neukum <oneukum@...e.com>
Date: Thu, 17 Oct 2019 15:25:47 +0200

> The serial state information must not be embedded into another
> data structure, as this interferes with cache handling for DMA
> on architectures without cache coherence..
> That would result in data corruption on some architectures
> Allocating it separately.
> 
> v2: fix syntax error
> 
> Signed-off-by: Oliver Neukum <oneukum@...e.com>

Applied.... still disappointed that this respin even needed to
happen.