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Message-ID: <20240906022828.891812-1-ruanjinjie@huawei.com> Date: Fri, 6 Sep 2024 10:28:28 +0800 From: Jinjie Ruan <ruanjinjie@...wei.com> To: <broonie@...nel.org>, <xiaoning.wang@....com>, <linux-spi@...r.kernel.org>, <linux-kernel@...r.kernel.org> CC: <ruanjinjie@...wei.com> Subject: [PATCH] spi: spi-fsl-lpspi: Use IRQF_NO_AUTOEN flag in request_irq() 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: 9728fb3ce117 ("spi: lpspi: disable lpspi module irq in DMA mode") Signed-off-by: Jinjie Ruan <ruanjinjie@...wei.com> --- drivers/spi/spi-fsl-lpspi.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 8f8496578d6b..7ab251e911a8 100644 --- a/drivers/spi/spi-fsl-lpspi.c +++ b/drivers/spi/spi-fsl-lpspi.c @@ -891,7 +891,7 @@ static int fsl_lpspi_probe(struct platform_device *pdev) return ret; } - 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); if (ret) { dev_err(&pdev->dev, "can't get irq%d: %d\n", irq, ret); @@ -948,14 +948,10 @@ static int fsl_lpspi_probe(struct platform_device *pdev) ret = fsl_lpspi_dma_init(&pdev->dev, fsl_lpspi, controller); if (ret == -EPROBE_DEFER) goto out_pm_get; - if (ret < 0) + if (ret < 0) { dev_warn(&pdev->dev, "dma setup error %d, use pio\n", ret); - else - /* - * disable LPSPI module IRQ when enable DMA mode successfully, - * to prevent the unexpected LPSPI module IRQ events. - */ - disable_irq(irq); + enable_irq(irq); + } ret = devm_spi_register_controller(&pdev->dev, controller); if (ret < 0) { -- 2.34.1
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