[PATCH] serial: imx: Restore original RXTL for console to fix data loss

[Stefan Wahren]

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 at vger.kernel.org
> Fixes: 7a637784d517 ("serial: imx: reduce RX interrupt frequency")
> Signed-off-by: Fabio Estevam <festevam at gmail.com>
>
Reviewed-by: Stefan Wahren <wahrenst at gmx.net>

Thanks