[V2 PATCH 1/1] genirq: fix desc->action become NULL error

Hi, all According to the suggestions from Thomas Gleixner, I made a new patch to fix this problem. Changes: The commit 71f64340fc0e will not be reverted. And action test is inserted. Best Regards! Zhu Yanjun

[V2 PATCH 1/1] genirq: fix desc->action become NULL error

From: Zhu Yanjun After this commit 71f64340fc0e ("genirq: Remove the second parameter from handle_irq_event_percpu()") is applied, the variable desc->action is not protected by raw_spin_lock. The following calltrace will pop up. BUG: unable to handle kernel NULL pointer dereference at 00