因为中断服务例程都是顺序执行的，在响应一个中断的时候不应该被打断。相反，这些可延时任务执行时，可以...
…）函数，问题一：这里的irq_no可不可以静态的分配？（就是比如我要用98号中断，直接给传98给irq_...
定义一个file_operations结构体(指向Led_Open等底层函数)。使用函数regsiter_chrdev(major,”first_drv”...
printk(KERN_ERR "error %d requesting GPIO IRQ %d\n", status, gpio_num); return status; } set_irq_type(irq, IRQ_TYPE_EDGE_RISING); wait_for_completion_interruptible(&work); printk(".. done\n"); return 0; } void cleanup_module(void) { free_irq(gpio_to_irq(gpio_num), NULL); g...
在armv8-arch64架构下,控制cpu是否响应IRQ,FIQ,SERROR,DEBUG中断,是由PSTATUS(daif寄存器)控制的。 在armv8-arch32或armv7架构下,控制cpu是否响应IRQ,FIQ,SERROR,DEBUG中断,CPSP中的 D A I F bit位控制的。 本文只讨论armv8-arch64架构下的linux kernel程序: 首先,local_irq... ...
I can't check simple post route, i get 405 Method Not Allowed error google map with async, what wrong? get names of objects which are in object ImageMagick white out border stripes Will hit-for-miss and hit-for-pass be removed from Varnish using BAN ...
v4l2_err(vpif_dev->driver,"Error registering v4l2 device\n");returnerr; } k =0;while((res = platform_get_resource(pdev, IORESOURCE_IRQ, k))) {for(i = res->start; i <= res->end; i++) {if(request_irq(i, vpif_channel_isr, IRQF_DISABLED,"DM646x_Display", ...
I am trying to register an ISR with irq number 121 but getting -22 as error. We have a external GPIO controller which is mapped to address space - 0x80040000 and the GPIO pin is connected to external irq0[3:0] in the zynq CPU. here is the code snippet for registering the irq. pr...
dev_err(&pdev->dev,"error initializing hardware\n");returnerr; } err = i2c_add_adapter(adap);if(err) { dev_err(&pdev->dev,"failed to add adapter\n");returnerr; } platform_set_drvdata(pdev, i2c_dev);return0; } 開發者ID:atmark-techno,項目名稱:linux-3.14-at,代碼行數:70,代碼...
I have implemented a 10G Ethernet Subsystem (v3.0) IP in a custom board. I designed the FPGA with Vivado 2015.4, the Linux application with Petalinux 2015.4. Problem : the request_irq() in xilinx_axienet_open() fails with error -22 ... net eth0: axienet_open() xilinx_axienet 4000000...