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[v2,1/2] driver core: Add device_is_dependent() to linux/device.h

Message ID 20200610011934.49795-2-saravanak@google.com
State Superseded
Headers show
Series [v2,1/2] driver core: Add device_is_dependent() to linux/device.h | expand

Commit Message

Saravana Kannan June 10, 2020, 1:19 a.m. UTC 
DT implementation of fw_devlink needs this function to detect cycles. So
make it available.

Signed-off-by: Saravana Kannan <saravanak@google.com>
---
 drivers/base/core.c    | 2 +-
 include/linux/device.h | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/drivers/base/core.c b/drivers/base/core.c
index 139cdf7e7327..509b13610b56 100644
--- a/drivers/base/core.c
+++ b/drivers/base/core.c
@@ -118,7 +118,7 @@  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 ac8e37cd716a..5c618effc51e 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)
 {