module: fix building with sysfs disabled

Sysfs support might be disabled so we need to guard the code that
instantiates "compression" attribute with an #ifdef.

Fixes: b1ae6dc41eaa ("module: add in-kernel support for decompressing")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>

diff --git a/kernel/module_decompress.c b/kernel/module_decompress.c
index b01c69c..ffef98a 100644 (file)
--- a/kernel/module_decompress.c
+++ b/kernel/module_decompress.c
@@ -250,6 +250,7 @@ void module_decompress_cleanup(struct load_info *info)
        info->max_pages = info->used_pages = 0;
 }
 
+#ifdef CONFIG_SYSFS
 static ssize_t compression_show(struct kobject *kobj,
                                struct kobj_attribute *attr, char *buf)
 {
@@ -269,3 +270,4 @@ static int __init module_decompress_sysfs_init(void)
        return 0;
 }
 late_initcall(module_decompress_sysfs_init);
+#endif