From: Heinrich Schuchardt <xypron.glpk@gmx.de>
Date: Sat, 9 Feb 2019 21:23:48 +0000 (+0100)
Subject: efi_loader: fix EFI_FILE_PROTOCOL.GetInfo()
X-Git-Url: http://git.dujemihanovic.xyz/?a=commitdiff_plain;h=823c233b7ab95169ea4428b2821b72b8887b47b0;p=u-boot.git

efi_loader: fix EFI_FILE_PROTOCOL.GetInfo()

We check the existence of files with fs_exist(). This function calls
fs_close(). If we do not set the active block device again fs_opendir()
fails and we do not set the flag EFI_FILE_DIRECTORY. Due to this error the
`cd` command in the EFI shell fails.

So let's add the missing set_blk_dev(fh) call.

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/lib/efi_loader/efi_file.c b/lib/efi_loader/efi_file.c
index 9d709a8db0..4b4422205d 100644
--- a/lib/efi_loader/efi_file.c
+++ b/lib/efi_loader/efi_file.c
@@ -200,6 +200,10 @@ static struct efi_file_handle *file_open(struct file_system *fs,
 			     fs_exists(fh->path)))
 			goto error;
 
+		/* fs_exists() calls fs_close(), so open file system again */
+		if (set_blk_dev(fh))
+			goto error;
+
 		/* figure out if file is a directory: */
 		fh->isdir = is_dir(fh);
 	} else {