From: sashiko-bot@kernel.org
To: "Sasha Levin" <sashal@kernel.org>
Cc: linux-serial@vger.kernel.org
Subject: Re: [PATCH AUTOSEL 6.18] serial: 8250_port: recognize UPIO_AU
Date: Mon, 31 Aug 2026 14:19:49 +0000 [thread overview]
Message-ID: <20260831141950.12FE81F000E9@smtp.kernel.org> (raw)
In-Reply-To: <20260831133314.4125787-85-sashal@kernel.org>
> From: Manuel Lauss <manuel.lauss@gmail.com>
>
> [ Upstream commit 49fa670efdfdd27e29145cbd2beef065c08717ef ]
>
> My MIPS Alchemy systems generate the following warning during
> probe of the 8250 driver:
>
> WARNING: drivers/tty/serial/8250/8250_port.c:462 at set_io_from_upio+0xfc/0x124, CPU#0: swapper/0/1
> Unsupported UART type 4
> [...]
> [<80521d40>] set_io_from_upio+0xfc/0x124
> [<80521dfc>] serial8250_set_defaults+0x94/0xe0
> [<80520fb4>] serial8250_register_8250_port+0x288/0x51c
> [<805214ec>] serial8250_probe+0x160/0x1e8
> [<8053b5f0>] platform_probe+0x64/0x90
>
> The least invasive fix is to recognize UPIO_AU (type 4) in set_io_from_upio()
> and do nothing, since all parameters have already been set up in
> 8250_rt288x.c::au_platform_setup().
>
> Run-tested on Alchemy Au1300 platform.
>
> Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com>
> Link: https://patch.msgid.link/20260430135822.905035-1-manuel.lauss@gmail.com
> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> Signed-off-by: Sasha Levin <sashal@kernel.org>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260831133314.4125787-85-sashal@kernel.org?part=1
prev parent reply other threads:[~2026-08-31 14:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20260831133314.4125787-1-sashal@kernel.org>
2026-08-31 13:21 ` [PATCH AUTOSEL 6.18-5.10] serial: 8250: fix possible ISR soft lockup Sasha Levin
2026-08-31 13:58 ` sashiko-bot
2026-08-31 13:21 ` [PATCH AUTOSEL 6.18] tty: serial: 8250: protect against NULL uart->port.dev in register Sasha Levin
2026-08-31 14:21 ` sashiko-bot
2026-08-31 13:21 ` [PATCH AUTOSEL 6.18] serial: 8250_port: recognize UPIO_AU Sasha Levin
2026-08-31 14:19 ` sashiko-bot [this message]
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