printk: Don't try to parse DEVNAME:0.0 console options

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>
Link: https://lore.kernel.org/r/20240327110021.59793-3-tony@atomide.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 05919491c5a20b5d3fa3dd3796d500eced89421e..67937e5c6010f5b6baea5e4aa76970d437232669 100644 (file)
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2504,6 +2504,10 @@ 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.
         */