U return 1 dont return 0. If u return 1 OS thinks that
ur interrupt was handled. And if u return 0 OS thinks
the interrupt is not handled and searches for suitable
handler. But it fails and crashes.
Regards
Venkat
--- �Τ� <[EMAIL PROTECTED]> wrote:
> Hi,
>
> I got a problem with the rtl_hard_enable_irq
> function.
> When i put the function in a rtl interrupt
> handler like this...
>
>
> unsigned int int_handler(unsigned int irq, struct
> pt_regs *regs)
> {
> long long t;
> t = lrdtsc();
> switch (irq) {
> case IRQ1 :
> rtl_hard_enable_irq(IRQ1);
> rtf_put(0, &t, sizeof(t));
> break;
> case IRQ2 :
> rtl_hard_enable_irq(IRQ2);
> rtf_put(1, &t, sizeof(t));
> break;
>
>
> default :
> break;
> }
> return 0;
> }
>
> when there's an interrupt occur(IRQ1=4 , IRQ2=3
> ), my system will
> crash seriously. But if i don't use the
> function. rtlinux will not receive
> anymore interrupt(IRQ1 and IRQ2) before
> rtl_global_pend_irq().
>
> I searched some others' codes, all of them put
> the rtl_hard_enable_irq
> in their interrupt handler. So i can not
> understand why my system crashed.
> Does anyone have the answer ?
>
> enviroment: redhat 7.0
> kernel2.2.19-rtl
> rtlinux-3.1
> NIC Card IRQ : 4 and 3
>
>
>
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