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path: root/drivers/tty/serial/earlycon.c
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Diffstat (limited to 'drivers/tty/serial/earlycon.c')
-rw-r--r--drivers/tty/serial/earlycon.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/tty/serial/earlycon.c b/drivers/tty/serial/earlycon.c
index c14873b67803..2ae9190b64bb 100644
--- a/drivers/tty/serial/earlycon.c
+++ b/drivers/tty/serial/earlycon.c
@@ -170,6 +170,7 @@ static int __init register_earlycon(char *buf, const struct earlycon_id *match)
int __init setup_earlycon(char *buf)
{
const struct earlycon_id **p_match;
+ bool empty_compatible = true;
if (!buf || !buf[0])
return -EINVAL;
@@ -177,6 +178,7 @@ int __init setup_earlycon(char *buf)
if (early_con.flags & CON_ENABLED)
return -EALREADY;
+again:
for (p_match = __earlycon_table; p_match < __earlycon_table_end;
p_match++) {
const struct earlycon_id *match = *p_match;
@@ -185,6 +187,10 @@ int __init setup_earlycon(char *buf)
if (strncmp(buf, match->name, len))
continue;
+ /* prefer entries with empty compatible */
+ if (empty_compatible && *match->compatible)
+ continue;
+
if (buf[len]) {
if (buf[len] != ',')
continue;
@@ -195,6 +201,11 @@ int __init setup_earlycon(char *buf)
return register_earlycon(buf, match);
}
+ if (empty_compatible) {
+ empty_compatible = false;
+ goto again;
+ }
+
return -ENOENT;
}