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([14.160.25.72]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3931f41cf6csm1771442a91.9.2026.08.13.00.48.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Aug 2026 00:48:26 -0700 (PDT) From: phucduc.bui@gmail.com To: Jonathan Cameron , David Lechner , nuno.sa@analog.com, Chen Wang , Inochi Amaoto , Takashi Sakamoto , u.kleine-koenig@baylibre.com, Danilo Krummrich , Bjorn Helgaas , linux-iio@vger.kernel.org, sophgo@lists.linux.dev Cc: linux-kernel@vger.kernel.org, bui duc phuc Subject: [PATCH] iio: adc: sophgo-saradc: Handle errors from optional IRQ lookup Date: Thu, 13 Aug 2026 14:48:10 +0700 Message-ID: <20260813074810.27574-1-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org 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 optional IRQ is available. Other errors, such as -EPROBE_DEFER and -EINVAL, should be propagated so that the caller can handle them appropriately. Propagate negative errors other than -ENXIO. Signed-off-by: bui duc phuc --- drivers/iio/adc/sophgo-cv1800b-adc.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/iio/adc/sophgo-cv1800b-adc.c b/drivers/iio/adc/sophgo-cv1800b-adc.c index bdc3e1326a9a..c6eed09acfcd 100644 --- a/drivers/iio/adc/sophgo-cv1800b-adc.c +++ b/drivers/iio/adc/sophgo-cv1800b-adc.c @@ -182,6 +182,8 @@ static int cv1800b_adc_probe(struct platform_device *pdev) return PTR_ERR(saradc->regs); saradc->irq = platform_get_irq_optional(pdev, 0); + if (saradc->irq < 0 && saradc->irq != -ENXIO) + return saradc->irq; if (saradc->irq > 0) { init_completion(&saradc->completion); ret = devm_request_irq(dev, saradc->irq, -- 2.43.0