ret =devm_request_threaded_irq(&pdev->dev, pm805->irq_audio_short2,NULL, pm805_short_handler, IRQF_ONESHOT,"audio_short2", pm805);if(ret <0) dev_err(&pdev->dev,"Failed to request IRQ: #%d: %d\n", pm805->irq_audio_short2, ret); platform_set_drvdata(pdev, pm805);return...
IRQF_ONESHOT 必须要存在 在处理NIC,多媒体等时处理速度会很慢,建议使用top/bottom机制 系统标准的优先级顺序 硬件中断 (抢占了一切资源) 实时线程(SCHED_FIFO. SCHED_RR) 处理器异常(系统调用,缺页异常等) 用户模式线程(SCHED_OTHER) 如何判定选择硬中断还是线程中断? 内核提供了request_any_context_irq,根据特定...
int irq = gpio_to_irq(gpio); int ret = devm_request_threaded_irq(dev, irq, NULL, irq_handler, IRQF_TRIGGER_FALLING | IRQF_ONESHOT, "my_interrupt", NULL); if (ret) { dev_err(dev, "Unable to request IRQ: %d\n", irq); return ret; } ``` 在上面的代码示例中,我们首先通过 gpio...
hcd->power_budget = pdata->power_budget;if(pdata->dock_connect_irq) { rc = request_threaded_irq(pdata->dock_connect_irq,NULL, msm_ehci_dock_connect_irq, IRQF_TRIGGER_FALLING | IRQF_TRIGGER_RISING | IRQF_ONESHOT,"msm_ehci_host", mhcd);if(!rc) enable_irq_wake(pdata->dock_connect_...
/// So pass the IRQF_ONESHOT flag in this case. /// // // Confidence: Good // Confidence: Moderate // Comments: // Options: --no-includes @@ -79,16 +79,25 @@ devm_request_threaded_irq@p(dev, irq, NULL, thread_fn, ) @depends on context@ expression irq; expression dev, irq...
writeb(0, ioaddr + RTC_INTERRUPTS);if(devm_request_irq(&pdev->dev, pdata->irq, ds1553_rtc_interrupt,0, pdev->name, pdev) <0) { dev_warn(&pdev->dev,"interrupt not available.\n"); pdata->irq =0; } } rtc =devm_rtc_device_register(&pdev->dev, pdev->name, ...