From: Stefan Wahren <wahrenst@gmx.net>
To: Fabio Estevam <festevam@gmail.com>, gregkh@linuxfoundation.org
Cc: shawnguo@kernel.org, kernel@pengutronix.de,
tomasz.mon@camlingroup.com, linux-serial@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org,
stable@vger.kernel.org
Subject: Re: [PATCH] serial: imx: Restore original RXTL for console to fix data loss
Date: Fri, 20 Jun 2025 11:05:07 +0200 [thread overview]
Message-ID: <cb757d69-2e14-4b8b-9db4-5f3362be37dc@gmx.net> (raw)
In-Reply-To: <20250619114617.2791939-1-festevam@gmail.com>
Am 19.06.25 um 13:46 schrieb Fabio Estevam:
> Commit 7a637784d517 ("serial: imx: reduce RX interrupt frequency")
> introduced a regression on the i.MX6UL EVK board. The issue can be
> reproduced with the following steps:
>
> - Open vi on the board.
> - Paste a text file (~150 characters).
> - Save the file, then repeat the process.
> - Compare the sha256sum of the saved files.
>
> The checksums do not match due to missing characters or entire lines.
>
> Fix this by restoring the RXTL value to 1 when the UART is used as a
> console.
>
> This ensures timely RX interrupts and reliable data reception in console
> mode.
>
> With this change, pasted content is saved correctly, and checksums are
> always consistent.
>
> Cc: stable@vger.kernel.org
> Fixes: 7a637784d517 ("serial: imx: reduce RX interrupt frequency")
> Signed-off-by: Fabio Estevam <festevam@gmail.com>
>
Reviewed-by: Stefan Wahren <wahrenst@gmx.net>
Thanks
prev parent reply other threads:[~2025-06-20 9:05 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-19 11:46 [PATCH] serial: imx: Restore original RXTL for console to fix data loss Fabio Estevam
2025-06-20 9:05 ` Stefan Wahren [this message]
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