soc: qcom: llcc-qcom: Handle errors from optional IRQ lookup

From: bui duc phuc <[email protected]>

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.

---

Link v1:
https://lore.kernel.org/all/[email protected]/

Changes in v2:
- Drop the unnecessary check for a positive return value.
- Update the commit message to reflect the existing error handling.

 drivers/soc/qcom/llcc-qcom.c | 4 ++++
 1 file changed, 4 insertions(+)

index 733999867bbf..b166d45cdb6f 100644
@@ -5617,6 +5617,10 @@ static int qcom_llcc_probe(struct platform_device *pdev)
 	}
 
 	drv_data->ecc_irq = platform_get_irq_optional(pdev, 0);
+	if (drv_data->ecc_irq < 0 && drv_data->ecc_irq != -ENXIO)
+		return dev_err_probe(&pdev->dev, drv_data->ecc_irq,
+				     "failed to get IRQ resource\n");
+
 	drv_data->edac_reg_offset = cfg->edac_reg_offset;
 	drv_data->ecc_irq_configured = cfg->irq_configured;
 	drv_data->dev = dev;

2.43.0

Konrad

Applied, thanks!

[1/1] soc: qcom: llcc-qcom: Handle errors from optional IRQ lookup

      commit: 1ceb3431910f30334c16e3209ec79aff44ffdc9a

Best regards,

Bjorn Andersson <[email protected]>