From 7d34ca3854845398cb36866d14bbdc43dcec1ad0 Mon Sep 17 00:00:00 2001 From: Saravana Kannan Date: Tue, 9 Jun 2020 18:19:33 -0700 Subject: [PATCH] driver core: Add device_is_dependent() to linux/device.h DT implementation of fw_devlink needs this function to detect cycles. So make it available. Signed-off-by: Saravana Kannan Tested-by: John Stultz Signed-off-by: Rob Herring --- drivers/base/core.c | 2 +- include/linux/device.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/base/core.c b/drivers/base/core.c index 67d39a90b45c..320a0e1d628a 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -121,7 +121,7 @@ int device_links_read_lock_held(void) * Check if @target depends on @dev or any device dependent on it (its child or * its consumer etc). Return 1 if that is the case or 0 otherwise. */ -static int device_is_dependent(struct device *dev, void *target) +int device_is_dependent(struct device *dev, void *target) { struct device_link *link; int ret; diff --git a/include/linux/device.h b/include/linux/device.h index 15460a5ac024..33cece5d9a4c 100644 --- a/include/linux/device.h +++ b/include/linux/device.h @@ -829,6 +829,7 @@ extern int device_change_owner(struct device *dev, kuid_t kuid, kgid_t kgid); extern const char *device_get_devnode(struct device *dev, umode_t *mode, kuid_t *uid, kgid_t *gid, const char **tmp); +extern int device_is_dependent(struct device *dev, void *target); static inline bool device_supports_offline(struct device *dev) {