ret =devm_request_irq(&pdev->dev, id->irq, cdns_i2c_isr,0, DRIVER_NAME, id);if(ret) { dev_err(&pdev->dev,"cannot get irq %d\n", id->irq);gotoerr_clk_dis; } ret = i2c_add_adapter(&id->adap);if(ret <0) { dev_err(&pdev->dev,"reg adap failed: %d\n", ret);g...
您可以使用platform_get_irq()来获取IRQ编号.它还存储(内部)从DT获得的IRQ标志,因此如果将flags = 0传递给devm_request_irq(),将使用来自DT的标志. 手动 如果您的驱动程序不依赖于内核框架,则必须手动获取IRQ值: > IRQ编号可以通过irq_of_parse_and_map()获得(如您所述);此函数不仅返回IRQ号,还存储IRQ号的...
devm_request_threaded_irq怎么用 获取设备uniqueIdentifier :[UIDevice currentDevice].uniqueIdentifier;,但在ios5中,它已被废弃。 http://kensou.blog.51cto.com/3495587/655083 [[UIDevice currentDevice] systemName]; [[UIDevice currentDevice] systemVersion];//os version [[UIDevice currentDevice] uniqueIdentif...
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_to_irq 将 GPIO 转换为中断号,并...
一般情况中断产生设备数量要多于中断控制器，多个中断产生设备的中断都由一个中断控制器处理，这种多对一...
Commit e6789cd (uio: Simplify uio error path by using devres functions) converted uio to use devm_request_irq(). This introduced a change in behaviour since the IRQ is associated with the parent device instead of the created UIO device. The IRQ will remain active after uio_unregister_device...
err =devm_request_threaded_irq(dev, rtc->alarm_irq,NULL, cpcap_rtc_alarm_irq, IRQF_TRIGGER_NONE,"rtc_alarm", rtc);if(err) { dev_err(dev,"Could not request alarm irq: %d\n", err);returnerr; } disable_irq(rtc->alarm_irq);/* Stock Android uses the 1 Hz interrupt for "secure...
linux devm_request_irq 引发BUG sleeping function called from invalid context问题,程序员大本营,技术文章内容聚合第一站。
Use devm_request_irq to simplify error handling path, when probe smmu device. Also devm_{request|free}_irq when init or destroy domain context. Signed-off-by: Peng Fan <van.free...@gmail.com> Cc: Will Deacon <will.dea...@arm.com> ...
struct xxx_data"类型的指针，这是因为你在调用"devm_request_threaded_irq"时传递了"data"变量，它是...