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([183.91.15.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84f5a552859sm715908b3a.42.2026.08.07.02.10.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 07 Aug 2026 02:10:12 -0700 (PDT) From: phucduc.bui@gmail.com To: Jiri Slaby , Greg Kroah-Hartman , Frank Li , AngeloGioacchino Del Regno , Sascha Hauer , Fabio Estevam , Yenchia Chen , Daniel Golle , Zhiyong Tao , Sherry Sun , Robin Gong , Viken Dadhaniya , Praveen Talari Cc: Matthias Brugger , Pengutronix Kernel Team , Zong Jiang , Konrad Dybcio , Aniket Randive , Kathiravan Thirumoorthy , Anup Kulkarni , Krzysztof Kozlowski , 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 Subject: [PATCH 2/3] tty: serial: imx: Propagate errors from optional IRQ lookup Date: Fri, 7 Aug 2026 16:09:44 +0700 Message-ID: <20260807090945.41690-2-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260807090945.41690-1-phucduc.bui@gmail.com> References: <20260807090945.41690-1-phucduc.bui@gmail.com> Precedence: bulk X-Mailing-List: imx@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: bui duc phuc 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 --- 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