 irqn parameter.</p>
<p>The valid priority value can be from zero (0) to the value of <a class="el" href="group__irq__priority__defs.html#gabaa4e91ab84dbe5f669080af6d0d81fa">IRQ_PRIORITY_Msk</a>. <a class="el" href="group__irq__priority__defs.html#ga47b19866dc05c58c6923c313b371f881">IRQ_PRIORITY_ERROR</a> bit is set in returned value for interrupts which cannot be identified by irqn.</p>
<p>For Arm GIC the default implementation looks like the following example:</p>
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