Posted on February 08, 2008 at 09:57Hi all,
I'm developing a driver on uCLinux and need to handle the interrupt of UART1.
The code is:
request_irq(IRQ_UART_1, my_service_routine, 0 | SA_INTERRUPT | SA_SHIRQ, ''myname'', (void *)&my_fops);
However, I get a -EBUSY error.
When I take a look to /proc/interrupts i get the following output.
cat /proc/interrupts
4: 11102 timer
9: 549 STR710_UART
10: 0 STR710_UART
11: 0 STR710_UART
Err: 0
That makes me think that the system owns the interrupts 9 to 11 (corresponging to UART0, UART1 and UART2) at boot time.
The question is: how can I handle interrupt 10 (UART1)? Otherwise, how can I avoid the system to hang interrupts 10 and 11?
TIA
