Try to set some flag into the third parameter of the request_irq()
function like:
SA_SHIRQ Interrupt is shared
SA_INTERRUPT Disable local interrupts while processing
SA_SAMPLE_RANDOM The interrupt can be used for entropy
otherwise try to use the function install_irq_handler()
bye Daniele
Sébastien Chrétien ha scritto:
> Hello,
>
> I am trying to register a function writh IRQ :
>
> static irqreturn_t uart_test (int irq , void *dev_id)
> {
> printk("/!\\ Interruption : tx_empty\n");
> return IRQ_HANDLED;
> }
>
> req=request_irq(0x18,uart_test,NULL,"uart_test",NULL);
> printk("Initialisation IRQ UART : %d \n", req);
>
> When I boot linux ppc, the req value is -38.
> What is wrong ?
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Daniele Bosi
*DIGITEK S.p.A.*
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