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serial-uclass: set GD_FLG_SERIAL_READY only when cur_serial_dev is assigned

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serial_find_console_or_panic() may left cur_serial_dev unassigned if
REQUIRE_SERIAL_CONSOLE is not set. Setting GD_FLG_SERIAL_READY in
this situation confuses serial console code. It tries to use
unassigned driver instead of debug port and stops printing.
So check cur_serial_dev before setting GD_FLG_SERIAL_READY to allow
console to keep printing via debug port.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
This commit is contained in:
Maxim Kochetkov
2025-08-21 10:02:43 -06:00
committed by Tom Rini
parent 2b751d42c3
commit e4507f4a0a
1 changed files with 2 additions and 1 deletions
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drivers/serial/serial-uclass.c
+2 -1
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@@ -191,7 +191,8 @@ int serial_init(void)
{
#if CONFIG_IS_ENABLED(SERIAL_PRESENT)
serial_find_console_or_panic();
gd->flags |= GD_FLG_SERIAL_READY;
if (gd->cur_serial_dev)
gd->flags |= GD_FLG_SERIAL_READY;
if (IS_ENABLED(CONFIG_OF_SERIAL_BAUD)) {
int ret = 0;