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Date:   Tue, 22 Sep 2020 23:40:50 +0200
From:   Hauke Mehrtens <>
To:     David Miller <>
Subject: Re: [PATCH] net: lantiq: Add locking for TX DMA channel

On 9/22/20 2:18 AM, David Miller wrote:
> From: Hauke Mehrtens <>
> Date: Tue, 22 Sep 2020 00:31:13 +0200
>> The TX DMA channel data is accessed by the xrx200_start_xmit() and the
>> xrx200_tx_housekeeping() function from different threads. Make sure the
>> accesses are synchronized by using locking around the accesses.
>> Signed-off-by: Hauke Mehrtens <>
> The TX lock will be held during the xrx200_start_xmit() routine, always.
> Please use that in xrx200_tx_housekeeping() instead of adding a new
> unnecessary lock.
> Thank you.

Thank you for the information, I was not aware of this locking, I will
send a new version of this patch using the normal TX lock.


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