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 because of requesting.
Signed-off-by: Tian Tao tiantao6@hisilicon.com --- drivers/gpu/drm/tegra/dpaux.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-)
diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 105fb9c..0acaf66 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -521,7 +521,8 @@ static int tegra_dpaux_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); pm_runtime_get_sync(&pdev->dev);
- err = devm_request_irq(dpaux->dev, dpaux->irq, tegra_dpaux_irq, 0, + err = devm_request_irq(dpaux->dev, dpaux->irq, tegra_dpaux_irq, + IRQF_NO_AUTOEN, dev_name(dpaux->dev), dpaux); if (err < 0) { dev_err(dpaux->dev, "failed to request IRQ#%u: %d\n", @@ -529,8 +530,6 @@ static int tegra_dpaux_probe(struct platform_device *pdev) return err; }
- disable_irq(dpaux->irq); - dpaux->aux.transfer = tegra_dpaux_transfer; dpaux->aux.dev = &pdev->dev;