From: Ben Hutchings Date: Sun, 1 Sep 2013 17:24:16 +0100 Subject: hvc_vio: Do not override preferred console set by kernel parameter Bug-Debian: http://bugs.debian.org/492703 Origin: https://git.kernel.org/?p=linux/kernel/git/gregkh/tty.git;a=commit;h=1926d0aeecf0280c67bf7464b2d68fe4e92c566b The original version of this was done by Bastian Blank, who wrote: > The problem is the following: > - Architecture specific code sets preferred console to something bogus. > - Command line handling tries to set preferred console but is overruled > by the old setting. > > The udbg0 console is a boot console and independant. References: http://bugs.debian.org/492703 Signed-off-by: Ben Hutchings Cc: Benjamin Herrenschmidt Signed-off-by: Greg Kroah-Hartman --- drivers/tty/hvc/hvc_vio.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/tty/hvc/hvc_vio.c b/drivers/tty/hvc/hvc_vio.c index c791b18..b594abf 100644 --- a/drivers/tty/hvc/hvc_vio.c +++ b/drivers/tty/hvc/hvc_vio.c @@ -48,6 +48,7 @@ #include #include #include +#include #include "hvc_console.h" @@ -457,7 +458,9 @@ void __init hvc_vio_init_early(void) if (hvterm_priv0.proto == HV_PROTOCOL_HVSI) goto out; #endif - add_preferred_console("hvc", 0, NULL); + /* Check whether the user has requested a different console. */ + if (!strstr(cmd_line, "console=")) + add_preferred_console("hvc", 0, NULL); hvc_instantiate(0, 0, ops); out: of_node_put(stdout_node);