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spi: spi-fsl-lpspi: Use IRQF_NO_AUTOEN flag in request_irq()

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[ Upstream commit 003c7e01916c5e2af95add9b0cbda2e6163873e8 ]

disable_irq() after request_irq() still has a time gap in which
interrupts can come. request_irq() with IRQF_NO_AUTOEN flag will
disable IRQ auto-enable when request IRQ.

Fixes: 9728fb3ce1 ("spi: lpspi: disable lpspi module irq in DMA mode")
Signed-off-by: Jinjie Ruan <ruanjinjie@huawei.com>
Link: https://patch.msgid.link/20240906022828.891812-1-ruanjinjie@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jinjie Ruan
2024-09-06 10:28:28 +08:00
committed by Greg Kroah-Hartman
parent 99b60d5a73
commit 3d89ff55ff
1 changed files with 4 additions and 8 deletions
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12
drivers/spi/spi-fsl-lpspi.c
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@@ -870,7 +870,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
goto out_controller_put; goto out_controller_put;
} }
ret = devm_request_irq(&pdev->dev, irq, fsl_lpspi_isr, 0, ret = devm_request_irq(&pdev->dev, irq, fsl_lpspi_isr, IRQF_NO_AUTOEN,
dev_name(&pdev->dev), fsl_lpspi); dev_name(&pdev->dev), fsl_lpspi);
if (ret) { if (ret) {
dev_err(&pdev->dev, "can't get irq%d: %d\n", irq, ret); dev_err(&pdev->dev, "can't get irq%d: %d\n", irq, ret);
@@ -907,14 +907,10 @@ static int fsl_lpspi_probe(struct platform_device *pdev)
ret = fsl_lpspi_dma_init(&pdev->dev, fsl_lpspi, controller); ret = fsl_lpspi_dma_init(&pdev->dev, fsl_lpspi, controller);
if (ret == -EPROBE_DEFER) if (ret == -EPROBE_DEFER)
goto out_pm_get; goto out_pm_get;
if (ret < 0) if (ret < 0) {
dev_warn(&pdev->dev, "dma setup error %d, use pio\n", ret); dev_warn(&pdev->dev, "dma setup error %d, use pio\n", ret);
else enable_irq(irq);
/* }
* disable LPSPI module IRQ when enable DMA mode successfully,
* to prevent the unexpected LPSPI module IRQ events.
*/
disable_irq(irq);
ret = devm_spi_register_controller(&pdev->dev, controller); ret = devm_spi_register_controller(&pdev->dev, controller);
if (ret < 0) { if (ret < 0) {