When a device is unbound due to the provider of one of the resources going away, add it to the deferred probe list. This way the consumer device driver gets a chance to rebind itself if the provider is rebound later on.
Signed-off-by: Lucas Stach <[email protected]> --- drivers/base/base.h | 1 + drivers/base/core.c | 2 ++ drivers/base/dd.c | 2 +- 3 files changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/base/base.h b/drivers/base/base.h index e19b1008e5fb..c37d42450886 100644 --- a/drivers/base/base.h +++ b/drivers/base/base.h @@ -113,6 +113,7 @@ extern void device_release_driver_internal(struct device *dev, extern void driver_detach(struct device_driver *drv); extern int driver_probe_device(struct device_driver *drv, struct device *dev); +extern void driver_deferred_probe_add(struct device *dev); extern void driver_deferred_probe_del(struct device *dev); static inline int driver_match_device(struct device_driver *drv, struct device *dev) diff --git a/drivers/base/core.c b/drivers/base/core.c index 8c25e68e67d7..860e1cf195b9 100644 --- a/drivers/base/core.c +++ b/drivers/base/core.c @@ -572,6 +572,8 @@ void device_links_unbind_consumers(struct device *dev) device_release_driver_internal(consumer, NULL, consumer->parent); + driver_deferred_probe_add(consumer); + put_device(consumer); goto start; } diff --git a/drivers/base/dd.c b/drivers/base/dd.c index a1fbf55c4d3a..a0217d76a0f2 100644 --- a/drivers/base/dd.c +++ b/drivers/base/dd.c @@ -115,7 +115,7 @@ static void deferred_probe_work_func(struct work_struct *work) } static DECLARE_WORK(deferred_probe_work, deferred_probe_work_func); -static void driver_deferred_probe_add(struct device *dev) +void driver_deferred_probe_add(struct device *dev) { mutex_lock(&deferred_probe_mutex); if (list_empty(&dev->p->deferred_probe)) { -- 2.11.0
