[PATCH] bootstd: Fix relative path use in extlinux bootmeth

[Jonas Karlman]

Using relative path in a /boot/extlinux/extlinux.conf file fails to load
linux kernel.

Using a /boot/extlinux/extlinux.conf file:

  LABEL test
    LINUX ../linux/Image

Result in following error:

  Retrieving file: ../linux/Image
  Skipping test for failure retrieving kernel
  Boot failed (err=-14)

However, using sysboot cmd successfully load kernel using same file:

  sysboot mmc 1:1 any ${scriptaddr} /boot/extlinux/extlinux.conf

  Retrieving file: /boot/extlinux/../linux/Image

Fix relative path using bootmeth extlinux by supplying bootfile path
instead of subdir path in the call to pxe_setup_ctx, same as done in the
sysboot command.

Fixes: 31aefaf89a5b ("bootstd: Add an implementation of distro boot")
Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
---
 boot/bootmeth_extlinux.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/boot/bootmeth_extlinux.c b/boot/bootmeth_extlinux.c
index 24be0760229c..6b2b84003836 100644
--- a/boot/bootmeth_extlinux.c
+++ b/boot/bootmeth_extlinux.c
@@ -150,7 +150,7 @@ static int extlinux_boot(struct udevice *dev, struct bootflow *bflow)
 	info.dev = dev;
 	info.bflow = bflow;
 	ret = pxe_setup_ctx(&ctx, &cmdtp, extlinux_getfile, &info, true,
-			    bflow->subdir, false);
+			    bflow->fname, false);
 	if (ret)
 		return log_msg_ret("ctx", -EINVAL);
 
-- 
2.40.1