Specify PCI based UART for earlyprintk
authorStuart R. Anderson <stuart.r.anderson@intel.com>
Tue, 20 Jan 2015 12:07:57 +0000 (12:07 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Mon, 2 Feb 2015 18:11:27 +0000 (10:11 -0800)
commitea9e9d8029020d438b0717ffddf65140fda16051
treef711ae69a62aad6b1d186f2e581c5147e25fcdaf
parentd2b6f44779d3be22d32a5697bd30b59367fd2b33
Specify PCI based UART for earlyprintk

Add support for specifying PCI based UARTs for earlyprintk
using a syntax like "earlyprintk=pciserial,00:18.1,115200",
where 00:18.1 is the BDF of a UART device.

[Slightly tidied from Stuart's original patch]
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
arch/x86/kernel/early_printk.c