[PATCH v6 09/12] x86: early_printk: add USB3 debug port earlyprintk support

Add support for early printk by writing debug messages to the USB3 debug port. Users can use this type of early printk by specifying kernel parameter of "earlyprintk=xdbc". This gives users a chance of providing debug output. Signed-off-by: Lu Baolu ---

Re: [PATCH v6 09/12] x86: early_printk: add USB3 debug port earlyprintk support

Hi Lu, [auto build test ERROR on usb/usb-testing] [also build test ERROR on v4.5-rc1 next-20160125] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system] url: