init/Kconfig: add option to disable kernel compression

[cascardo/linux.git] / init / do_mounts_rd.c

diff --git a/init/do_mounts_rd.c b/init/do_mounts_rd.c
index 6be2879..143e98d 100644 (file)
--- a/init/do_mounts_rd.c
+++ b/init/do_mounts_rd.c
@@ -342,6 +342,13 @@ static int __init crd_load(int in_fd, int out_fd, decompress_fn deco)
        int result;
        crd_infd = in_fd;
        crd_outfd = out_fd;
+
+       if (!deco) {
+               pr_emerg("Invalid ramdisk decompression routine.  "
+                        "Select appropriate config option.\n");
+               panic("Could not decompress initial ramdisk image.");
+       }
+
        result = deco(NULL, 0, compr_fill, compr_flush, NULL, NULL, error);
        if (decompress_error)
                result = 1;