[PATCH 4/7] lib: utils/serial: Skip initialize serial when dt is not enabled

[Xiang W]

When the dt node has a status property and the value is not ok or
okay, skip initializing serial.

Signed-off-by: Xiang W <wxjstz at 126.com>
---
 lib/utils/serial/fdt_serial.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/lib/utils/serial/fdt_serial.c b/lib/utils/serial/fdt_serial.c
index 0baa722..8b6e6b9 100644
--- a/lib/utils/serial/fdt_serial.c
+++ b/lib/utils/serial/fdt_serial.c
@@ -40,6 +40,10 @@ int fdt_serial_init(void)
 			else
 				noff = fdt_path_offset(fdt, prop);
 		}
+		if (-1 < noff) {
+			if (!fdt_node_is_enabled(fdt, noff))
+				noff = -1;
+		}
 	}
 
 	/* First check DT node pointed by stdout-path */
@@ -68,6 +72,9 @@ int fdt_serial_init(void)
 		if (noff < 0)
 			continue;
 
+		if (!fdt_node_is_enabled(fdt, noff))
+			continue;
+
 		/* drv->init must not be NULL */
 		if (drv->init == NULL)
 			return SBI_EFAIL;
-- 
2.43.0