Re: [PATCH v3] serial: 8250: Fix fifo underflow on flush

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Subject: Re: [PATCH v3] serial: 8250: Fix fifo underflow on flush
From: Wentao Guan <guanwentao@xxxxxxxxxxxxx>
Date: Sat, 22 Feb 2025 21:26:27 +0800
Cc: andriy.shevchenko@xxxxxxxxxxxxxxx, arnd@xxxxxxxx, fancer.lancer@xxxxxxxxx, ftoth@xxxxxxxxxxxxxx, gregkh@xxxxxxxxxxxxxxxxxxx, heikki.krogerus@xxxxxxxxxxxxxxx, ilpo.jarvinen@xxxxxxxxxxxxxxx, jirislaby@xxxxxxxxxx, john.ogness@xxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-serial@xxxxxxxxxxxxxxx, pmladek@xxxxxxxx, schnelle@xxxxxxxxxxxxx, stable@xxxxxxxxxxxxxxx, sunilvl@xxxxxxxxxxxxxxxx
Feedback-id: bizesmtpsz:uniontech.com:qybglogicsvrgz:qybglogicsvrgz5a-0
In-reply-to: <20250208124148.1189191-1-jkeeping@inmusicbrands.com>

Hello John,

It seems strange that call 'dmaengine_terminate_async( **dma->rxchan** );' in
'serial8250_ **tx** _dma_flush' during code review.
I am not a professional reviewer in this module, could you explaim the change?

BRs
Wentao Guan

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- [PATCH v3] serial: 8250: Fix fifo underflow on flush
  - From: John Keeping

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