[U-Boot] [PATCH v2 03/47] dm: serial: Correct logic in serial_find_console_or_panic()

[Simon Glass]

In a final attempt to find a console UART this function uses the first
first available serial device. However the check for a valid device is
inverted.

This code is only executed when there is in fact no serial UART, but at
present it can fail to reach the panic_str() call in this case, and start
trying to use a non-existent UART.

Signed-off-by: Simon Glass <sjg at chromium.org>
Reviewed-by: Bin Meng <bmeng.cn at gmail.com>
---

Changes in v2: None

 drivers/serial/serial-uclass.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/serial/serial-uclass.c b/drivers/serial/serial-uclass.c
index 815fec3..bbc366b 100644
--- a/drivers/serial/serial-uclass.c
+++ b/drivers/serial/serial-uclass.c
@@ -71,7 +71,7 @@ static void serial_find_console_or_panic(void)
 #endif
 		if (!uclass_get_device_by_seq(UCLASS_SERIAL, INDEX, &dev) ||
 		    !uclass_get_device(UCLASS_SERIAL, INDEX, &dev) ||
-		    (!uclass_first_device(UCLASS_SERIAL, &dev) || dev)) {
+		    (!uclass_first_device(UCLASS_SERIAL, &dev) && dev)) {
 			gd->cur_serial_dev = dev;
 			return;
 		}
-- 
2.5.0.rc2.392.g76e840b