Merge branch 'for-linus' of git://git.linaro.org/people/mszyprowski/linux-dma-mapping

[firefly-linux-kernel-4.4.55.git] / include / linux / kmod.h

diff --git a/include/linux/kmod.h b/include/linux/kmod.h
index 9efeae679106ea85a3ff51790e79b86bf501b714..dd99c329e1616ec76af1c9e8b2d11cee08434aea 100644 (file)
--- a/include/linux/kmod.h
+++ b/include/linux/kmod.h
@@ -110,12 +110,29 @@ call_usermodehelper(char *path, char **argv, char **envp, int wait)
 
 extern struct ctl_table usermodehelper_table[];
 
+enum umh_disable_depth {
+       UMH_ENABLED = 0,
+       UMH_FREEZING,
+       UMH_DISABLED,
+};
+
 extern void usermodehelper_init(void);
 
-extern int usermodehelper_disable(void);
-extern void usermodehelper_enable(void);
-extern bool usermodehelper_is_disabled(void);
-extern void read_lock_usermodehelper(void);
-extern void read_unlock_usermodehelper(void);
+extern int __usermodehelper_disable(enum umh_disable_depth depth);
+extern void __usermodehelper_set_disable_depth(enum umh_disable_depth depth);
+
+static inline int usermodehelper_disable(void)
+{
+       return __usermodehelper_disable(UMH_DISABLED);
+}
+
+static inline void usermodehelper_enable(void)
+{
+       __usermodehelper_set_disable_depth(UMH_ENABLED);
+}
+
+extern int usermodehelper_read_trylock(void);
+extern long usermodehelper_read_lock_wait(long timeout);
+extern void usermodehelper_read_unlock(void);
 
 #endif /* __LINUX_KMOD_H__ */