[v2,15/16] media: imx-pxp: Use non-threaded IRQ
Commit Message
From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
There's no need to use threaded IRQs with the PXP, as the interrupt
handler doesn't need to sleep and doesn't perform any time-consuming
operation. Switch to regular IRQ handler.
This fixes lockups of the PXP noticed on i.MX7, where the PXP would stop
generating interrupts after a variable number of frames (from a few
dozens to a few hundreds). The root cause is however unknown.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
---
Changes since v2:
- Drop IRQF_TRIGGER_HIGH
- pick from https://lore.kernel.org/linux-media/20230112172507.30579-1-laurent.pinchart@ideasonboard.com/
---
drivers/media/platform/nxp/imx-pxp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
Comments
On Fr, 2023-01-13 at 10:54 +0100, Michael Tretter wrote:
> From: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
>
> There's no need to use threaded IRQs with the PXP, as the interrupt
> handler doesn't need to sleep and doesn't perform any time-consuming
> operation. Switch to regular IRQ handler.
>
> This fixes lockups of the PXP noticed on i.MX7, where the PXP would stop
> generating interrupts after a variable number of frames (from a few
> dozens to a few hundreds). The root cause is however unknown.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
> Reviewed-by: Michael Tretter <m.tretter@pengutronix.de>
> Signed-off-by: Michael Tretter <m.tretter@pengutronix.de>
Reviewed-by: Philipp Zabel <p.zabel@pengutronix.de>
regards
Philipp
@@ -1798,8 +1798,8 @@ static int pxp_probe(struct platform_device *pdev)
spin_lock_init(&dev->irqlock);
- ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, pxp_irq_handler,
- IRQF_ONESHOT, dev_name(&pdev->dev), dev);
+ ret = devm_request_irq(&pdev->dev, irq, pxp_irq_handler, 0,
+ dev_name(&pdev->dev), dev);
if (ret < 0) {
dev_err(&pdev->dev, "Failed to request irq: %d\n", ret);
return ret;