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driver core: Add device link flag DL_FLAG_AUTOPROBE_CONSUMER

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Add a new device link flag, DL_FLAG_AUTOPROBE_CONSUMER, to request the
driver core to probe for a consumer driver automatically after binding
a driver to the supplier device on a persistent managed device link.

As unbinding the supplier driver on a managed device link causes the
consumer driver to be detached from its device automatically, this
flag provides a complementary mechanism which is needed to address
some "composite device" use cases.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Rafael J. Wysocki
2019-02-01 01:59:42 +01:00
committed by Greg Kroah-Hartman
parent 72175d4ea4
commit e7dd40105a
4 changed files with 28 additions and 2 deletions
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2
drivers/base/dd.c
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@@ -116,7 +116,7 @@ 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)) {