From: sashiko-bot@kernel.org
To: "Nicolai Buchwitz" <nb@tipi-net.de>
Cc: linux-serial@vger.kernel.org
Subject: Re: [PATCH RESEND] serial: amba-pl011: end an RS485 transmission when TX is flushed
Date: Thu, 12 Nov 2026 08:17:26 +0000 [thread overview]
Message-ID: <sashiko-outbox-210685@kernel.org> (raw)
In-Reply-To: <20261112-devel-nbuchwitz-pl011-rs485-dma-flush-v1-1-6b811391651d@tipi-net.de>
> A TX flush during an RS485 DMA transmission only stops the DMA. Nothing
> ends the transmission afterwards, so RTS stays asserted and the bus
> stays driven until the next write.
>
> End it from the flush, unless the TX interrupt is still enabled and
> ends it itself.
>
> Fixes: 8d479237727c ("serial: amba-pl011: add RS485 support")
> Cc: stable@vger.kernel.org # 6.18.x
> Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de>
Sashiko has reviewed this patch and found no issues.
--
Sashiko AI review · https://sashiko.dev/#/patchset/20261112-devel-nbuchwitz-pl011-rs485-dma-flush-v1-1-6b811391651d@tipi-net.de?part=1
prev parent reply other threads:[~2026-11-12 8:17 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-12 8:09 [PATCH RESEND] serial: amba-pl011: end an RS485 transmission when TX is flushed Nicolai Buchwitz
2026-11-12 8:17 ` sashiko-bot [this message]
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