"Lu, Yinghai" <[email protected]> writes:
>>+static int check_timer_pin(int apic, int pin)
>>+{
>>+ int irq, idx;
>>+ /*
>>+ * Test the architecture default i8254 timer pin
>>+ * of apic 0 pin 2.
>>+ */
>
> Comments need to be updated.
Probably. Although this is all I have this doing in my patch.
>>+
>>+
>>+ /* If the apic pin pair is in use by another irq fail */
>>+ irq = irq_from_pin(apic, pin);
^^^^^^^^^^^^^^^^^^
>>+ if ((irq != -1) && (irq != 0)) {
>>+ apic_printk(APIC_VERBOSE,KERN_INFO "...apic %d pin % in
> use by irq %d\n",
>>+ apic, pin, irq);
>>+ return 0;
>>+ }
>>+
>>+ /* Add an entry in mp_irqs for irq 0 */
>>+ idx = update_irq0_entry(apic, pin);
>>+
>>+ /* Add an entry in irq_to_pin */
>>+ add_pin_to_irq(0, apic, pin);
>>+
>>+ /* Now setup the irq */
>>+ setup_IO_APIC_irq(apic, pin, idx, 0);
>>+
>>+ /* And finally check to see if the irq works */
>>+ return do_check_timer_pin(apic, pin);
>>+}
>>+
>
> Did you miss to call irq_from_pin before add_pin_to_irq? You defined
> irq_from_pin in PATCH 2/4.
No see above.
Eric
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