From: phucduc.bui@gmail.com
To: Jiri Slaby <jirislaby@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Frank Li <Frank.Li@nxp.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Sascha Hauer <s.hauer@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Yenchia Chen <yenchia.chen@mediatek.com>,
Daniel Golle <daniel@makrotopia.org>,
Zhiyong Tao <zhiyong.tao@mediatek.com>,
Sherry Sun <sherry.sun@nxp.com>, Robin Gong <yibin.gong@nxp.com>,
Viken Dadhaniya <viken.dadhaniya@oss.qualcomm.com>,
Praveen Talari <praveen.talari@oss.qualcomm.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Zong Jiang <quic_zongjian@quicinc.com>,
Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>,
Aniket Randive <aniket.randive@oss.qualcomm.com>,
Kathiravan Thirumoorthy
<kathiravan.thirumoorthy@oss.qualcomm.com>,
Anup Kulkarni <anup.kulkarni@oss.qualcomm.com>,
Krzysztof Kozlowski <krzk@kernel.org>,
linux-kernel@vger.kernel.org, linux-serial@vger.kernel.org,
linux-mediatek@lists.infradead.org, imx@lists.linux.dev,
linux-arm-msm@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
bui duc phuc <phucduc.bui@gmail.com>
Subject: [PATCH 2/3] tty: serial: imx: Propagate errors from optional IRQ lookup
Date: Fri, 7 Aug 2026 16:09:44 +0700 [thread overview]
Message-ID: <20260807090945.41690-2-phucduc.bui@gmail.com> (raw)
In-Reply-To: <20260807090945.41690-1-phucduc.bui@gmail.com>
From: bui duc phuc <phucduc.bui@gmail.com>
platform_get_irq_optional() returns a positive IRQ number on success or
a negative error code on failure. For an optional IRQ, -ENXIO indicates
that no IRQ is available, while other errors should be propagated.
Propagate errors such as -EPROBE_DEFER and -EINVAL instead of continuing
probe without the IRQ.
Signed-off-by: bui duc phuc <phucduc.bui@gmail.com>
---
drivers/tty/serial/imx.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 251a50c8aa38..4224454d360e 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -2463,7 +2463,11 @@ static int imx_uart_probe(struct platform_device *pdev)
if (rxirq < 0)
return rxirq;
txirq = platform_get_irq_optional(pdev, 1);
+ if (txirq < 0 && txirq != -ENXIO)
+ return txirq;
rtsirq = platform_get_irq_optional(pdev, 2);
+ if (rtsirq < 0 && rtsirq != -ENXIO)
+ return rtsirq;
sport->port.dev = &pdev->dev;
sport->port.mapbase = res->start;
--
2.43.0
next prev parent reply other threads:[~2026-08-07 9:10 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-07 9:09 [PATCH 1/3] serial: qcom-geni: Propagate errors from optional IRQ lookup phucduc.bui
2026-08-07 9:09 ` phucduc.bui [this message]
2026-08-07 9:09 ` [PATCH 3/3] serial: 8250_mtk: " phucduc.bui
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