[PATCH v6 2/6] printk: Don't try to parse DEVNAME:0.0 console options

[Tony Lindgren <tony@atomide.com>]

Prepare to parse the console for a console=DEVNAME:0.0 style consoles.
Currently console_setup() tries to make a console index out of any digits
passed in the kernel command line for console. In the DEVNAME:0.0 case,
the name can contain a device IO address, so bail out on console names
with a ':'.

Signed-off-by: Tony Lindgren <tony@atomide.com>
---
 kernel/printk/printk.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2459,6 +2459,10 @@ static int __init console_setup(char *str)
 	if (console_opt_save(str, brl_options))
 		return 1;
 
+	/* Don't attempt to parse a DEVNAME:0.0 style console */
+	if (strchr(str, ':'))
+		return 1;
+
 	/*
 	 * Decode str into name, index, options.
 	 */
-- 
2.43.1