ARM: uniphier: do not overwrite fdt_file environment

This code auto-detects the best-match FDT file name, but it should
respect the user's choice if "fdt_file" environment is found in a
saved set of environments.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>

diff --git a/arch/arm/mach-uniphier/board_late_init.c b/arch/arm/mach-uniphier/board_late_init.c
index d9eeacbf3a61639f216626b191b34677d11cb4c9..a45412677a0ffcfad93ca01f7a6ee222471f90ce 100644 (file)
--- a/arch/arm/mach-uniphier/board_late_init.c
+++ b/arch/arm/mach-uniphier/board_late_init.c
@@ -39,6 +39,9 @@ static int uniphier_set_fdt_file(void)
        int buf_len = 256;
        int ret;
 
+       if (getenv("fdt_file"))
+               return 0;       /* do nothing if it is already set */
+
        ret = fdt_get_string(gd->fdt_blob, 0, "compatible", &compat);
        if (ret)
                return -EINVAL;