linux-kernel - Re: [PATCH net-next] net: qca_spi: Add available buffer space verification

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Message-Id: <20181108.194112.1819328948681907759.davem@davemloft.net>
Date:   Thu, 08 Nov 2018 19:41:12 -0800 (PST)
From:   David Miller <davem@...emloft.net>
To:     stefan.wahren@...e.com
Cc:     michael.heimpold@...e.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net: qca_spi: Add available buffer space
 verification

From: Stefan Wahren <stefan.wahren@...e.com>
Date: Thu,  8 Nov 2018 14:38:21 +0100

> Interferences on the SPI line could distort the response of
> available buffer space. So at least we should check that the
> response doesn't exceed the maximum available buffer space.
> In error case increase a new error counter and retry it later.
> This behavior avoids buffer errors in the QCA7000, which
> results in an unnecessary chip reset including packet loss.
> 
> Signed-off-by: Stefan Wahren <stefan.wahren@...e.com>

Applied.