Currently, a whole disk without any partitions is not associated with EFI_SIMPLE_FILE_SYSTEM_PROTOCOL. So even if it houses FAT file system, there is a chance that we may not be able to access it, particularly, when accesses are to be attempted after searching that protocol against a device handle.
With this patch, EFI_SIMPLE_FILE_SYSTEM_PROTOCOL is installed to such a disk if part_get_info() shows there is not partition table installed on it.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- lib/efi_loader/efi_disk.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/lib/efi_loader/efi_disk.c b/lib/efi_loader/efi_disk.c index d72f455901f2..d36f22cedc52 100644 --- a/lib/efi_loader/efi_disk.c +++ b/lib/efi_loader/efi_disk.c @@ -253,6 +253,7 @@ static efi_status_t efi_disk_add_dev( struct efi_disk_obj **disk) { struct efi_disk_obj *diskobj; + disk_partition_t info; efi_status_t ret;
/* Don't add empty devices */ @@ -284,7 +285,9 @@ static efi_status_t efi_disk_add_dev( diskobj->dp); if (ret != EFI_SUCCESS) return ret; - if (part >= 1 && efi_fs_exists(desc, part)) { + /* partitions or whole disk without partitions */ + if ((part >= 1 || part_get_info(desc, part, &info)) && + efi_fs_exists(desc, part)) { diskobj->volume = efi_simple_file_system(desc, part, diskobj->dp); ret = efi_add_protocol(&diskobj->header,