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media: imx-pxp: Initialize the spinlock prior to using it

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After devm_request_threaded_irq() is called there is a chance that an
interrupt may occur before the spinlock is initialized, which will trigger
a kernel oops.

To prevent that, move the initialization of the spinlock prior to
requesting the interrupts.

Fixes: 51abcf7fdb ("media: imx-pxp: add i.MX Pixel Pipeline driver")
Signed-off-by: Fabio Estevam <festevam@denx.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Fabio Estevam
2021-10-08 15:10:14 +02:00
committed by Mauro Carvalho Chehab
parent 549cc89cd0
commit ed2f97ad4b
1 changed files with 2 additions and 2 deletions
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4
drivers/media/platform/imx-pxp.c
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@@ -1659,6 +1659,8 @@ static int pxp_probe(struct platform_device *pdev)
if (irq < 0)
return irq;
spin_lock_init(&dev->irqlock);
ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, pxp_irq_handler,
IRQF_ONESHOT, dev_name(&pdev->dev), dev);
if (ret < 0) {
@@ -1676,8 +1678,6 @@ static int pxp_probe(struct platform_device *pdev)
goto err_clk;
}
spin_lock_init(&dev->irqlock);
ret = v4l2_device_register(&pdev->dev, &dev->v4l2_dev);
if (ret)
goto err_clk;