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| author | Jinjie Ruan <ruanjinjie@huawei.com> | 2024-09-06 10:28:28 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-09 10:31:51 +0100 |
| commit | d3a5e7ffbd417a99ea0d1af86b03389a9d725ae6 (patch) | |
| tree | ce52afbecde4e5efd4f9bde3fb7cbae201f60e05 /drivers | |
| parent | ecbc50474769971c2d7268d1ac8e72eb22d78bd7 (diff) | |
| download | linux-d3a5e7ffbd417a99ea0d1af86b03389a9d725ae6.tar.gz linux-d3a5e7ffbd417a99ea0d1af86b03389a9d725ae6.tar.bz2 linux-d3a5e7ffbd417a99ea0d1af86b03389a9d725ae6.zip | |
spi: spi-fsl-lpspi: Use IRQF_NO_AUTOEN flag in request_irq()
[ 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: 9728fb3ce117 ("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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/spi/spi-fsl-lpspi.c | 12 |
1 files changed, 4 insertions, 8 deletions
diff --git a/drivers/spi/spi-fsl-lpspi.c b/drivers/spi/spi-fsl-lpspi.c index 13313f07839b..514a2c5c8422 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) { |