do not pass NULL pointer to libfdt

Re-send because of line-wraps.

Without this patch, u-boot just hangs if the fdt pointer is
not initialized. The diagnostic subsystems are not yet initialized,
so all you get is a blind hang.

Signed-off-by: Stanislav.Pinchuk@kaspersky.com

diff --git a/include/dm/read.h b/include/dm/read.h
index f6f8b87..03ba982 100644 (file)
--- a/include/dm/read.h
+++ b/include/dm/read.h
@@ -1006,7 +1006,7 @@ static inline u64 dev_translate_dma_address(const struct udevice *dev,
 
 static inline int dev_read_alias_highest_id(const char *stem)
 {
-       if (!CONFIG_IS_ENABLED(OF_LIBFDT))
+       if (!CONFIG_IS_ENABLED(OF_LIBFDT) || !gd->fdt_blob)
                return -1;
        return fdtdec_get_alias_highest_id(gd->fdt_blob, stem);
 }