module: fix building with sysfs disabled

dtor · mcgrof · commit a8e8f851e829 · 2022-02-16T12:51:32.000-08:00
Sysfs support might be disabled so we need to guard the code that instantiates "compression" attribute with an #ifdef. Fixes: b1ae6dc ("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
@@ -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

Original file line number	Diff line number	Diff line change
`@@ -250,6 +250,7 @@ void module_decompress_cleanup(struct load_info *info)`
`250`	`250`	`info->max_pages = info->used_pages = 0;`
`251`	`251`	`}`
`252`	`252`
	`253`	`+#ifdef CONFIG_SYSFS`
`253`	`254`	`static ssize_t compression_show(struct kobject *kobj,`
`254`	`255`	`struct kobj_attribute attr, char buf)`
`255`	`256`	`{`
`@@ -269,3 +270,4 @@ static int __init module_decompress_sysfs_init(void)`
`269`	`270`	`return 0;`
`270`	`271`	`}`
`271`	`272`	`late_initcall(module_decompress_sysfs_init);`
	`273`	`+#endif`