commit 8f0a5fda41fd4542c2d8adcf61bde452cc721a22
Author: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date:   Mon Dec 30 01:29:35 2024 +0100

    startup: Do not emit ARGP_ERR_UNKNOWN
    
    This is making startup completely ignore parameters when root= is passed
    first on the kernel command line.

diff --git a/startup/startup.c b/startup/startup.c
index 606555d2..53d46982 100644
--- a/startup/startup.c
+++ b/startup/startup.c
@@ -728,7 +728,6 @@ parse_opt (int key, char *arg, struct argp_state *state)
     case OPT_KERNEL_TASK:
       kernel_task = atoi (arg);
       break;
-    default: return ARGP_ERR_UNKNOWN;
     }
   return 0;
 }
