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driver core: Add device_is_dependent() to linux/device.h

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DT implementation of fw_devlink needs this function to detect cycles. So
make it available.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Tested-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Saravana Kannan 2020-06-09 18:19:33 -07:00 committed by Rob Herring
parent 418370ff22
commit 7d34ca3854
2 changed files with 2 additions and 1 deletions
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2
drivers/base/core.c
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@ -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;

1
include/linux/device.h
View File

@ -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)
{