c - How to manually cause an interrupt? -

i'm writing device driver virtual device in linux kernel. because virtual, may ask there command or technique manually cause interrupt test interrupt handler?

currently interrupt handler simple this:

static irqreturn_t interrupt_handler(int irq, void *dev_id){     printk(kern_alert "interrupt handler executed!\n");     return irq_handled; } 

and called probe function:

static int probe (struct platform_device *pdev) {     printk("-----------------------------------------probe called \n");     ret = misc_register(&mydevice);     printk("-----------------------------------------got minor:%i\n",mydevice.minor);     struct resource *r = platform_get_resource(pdev, ioresource_mem, 0);     if(r == null) {         printk("platform_get_resource failed\n");         return -enodev;     }     irq = platform_get_irq(pdev,0);     if (irq < 0) {         printk("platform_get_irq failed\n");         return -enodev;     }     printk("got irq =%d\n",irq);     ret = request_irq(irq, interrupt_handler, irqf_disabled, pdev->name, null);     printk("got irq, function returns %d\n.", ret);     return ret; } 

the virtual device defined in board as:

static struct resource mydevice_resources[] ={     [0]             = {         .start      =   20,         .end        =   20,         .flags      =   ioresource_irq     },     [2]             = {         .start      =   0xc0100000,         .end        =   0xc0200000,         .flags      =   ioresource_mem     } };  static struct platform_device mydevice = {     .name           = "mydevice",     .id             = 0,     .num_resources          = array_size(mydevice_resources),     .resource       = mydevice_resources }; 

and also, somehow predefined interrupt mydevice 20, probe function says receives interrupt 17.

i appreciate hint. thank you.

this close question. there no way manually issue interrupt. if using android's virtual machine, there're limited set of interrupts , signals can invoked virtually using console command. console open telnet localhost 5554 virtual machine.