红帽全球峰会第 30 章 实时内核
删除 USB 不再会在 MRG 实时内核上导致 may _sleep（） 警告
在以前的版本中，删除 MRG 实时内核上的 USB 设备会导致在禁用中断的情况下造成睡眠锁定。因此，日志记录了 may
_sleep（） 警告的系统。这个版本会替换 local_irq_disable 和 local_irq_enable 调用中的 local_irq_disable_nort 和 local_irq_enable_nort，它可分别修复这个程序错误。(BZ#1443711)
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