* [PATCH] iio: adc: sophgo-saradc: Handle errors from optional IRQ lookup
@ 2026-08-13 7:48 phucduc.bui
0 siblings, 0 replies; only message in thread
From: phucduc.bui @ 2026-08-13 7:48 UTC (permalink / raw)
To: Jonathan Cameron, David Lechner, nuno.sa, Chen Wang,
Inochi Amaoto, Takashi Sakamoto, u.kleine-koenig,
Danilo Krummrich, Bjorn Helgaas, linux-iio, sophgo
Cc: linux-kernel, bui duc phuc
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 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 <phucduc.bui@gmail.com>
---
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
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2026-08-13 7:48 [PATCH] iio: adc: sophgo-saradc: Handle errors from optional IRQ lookup phucduc.bui
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