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Altera_Forum's avatar
Altera_Forum
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21 years ago

requsting interrupt fails

Hello, I have an UL with one interrupt. When I try to request the interrupt, it fails. Here is the code of my driver: static int __init mod_init(void) { u8 errorcode; printk("DSP: D...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
21 years ago

Hi MRKs,

The value returned from request_irq() is either 0 to indicate success

or a negative error code ... just test for zero & you should be fine:

if( request_irq(IRQ_NR, driver_isr, SA_INTERRUPT|SA_SHIRQ, "dsp", &fops) == 0)

or test for zero

Regards,

--Scott