[PATCH v2 09/12] x86: early_printk: add USB3 debug port earlyprintk support

2015-11-03 Thread Lu Baolu
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 --- Documentation/kernel-parameters.txt | 1

[PATCH v2 09/12] x86: early_printk: add USB3 debug port earlyprintk support

2015-11-03 Thread Lu Baolu
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 ---