add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/spi/spi-fsl-lpspi.c
..
..
@@ -906,9 +906,14 @@
906
906
 	ret = fsl_lpspi_dma_init(&pdev->dev, fsl_lpspi, controller);
907
907
 	if (ret == -EPROBE_DEFER)
908
908
 		goto out_pm_get;
909
-
910
909
 	if (ret < 0)
911
910
 		dev_err(&pdev->dev, "dma setup error %d, use pio\n", ret);
911
+	else
912
+		/*
913
+		 * disable LPSPI module IRQ when enable DMA mode successfully,
914
+		 * to prevent the unexpected LPSPI module IRQ events.
915
+		 */
916
+		disable_irq(irq);
912
917
 
913
918
 	ret = devm_spi_register_controller(&pdev->dev, controller);
914
919
 	if (ret < 0) {