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driver core: Add dev_has_sync_state()

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Add an API to check if a device has sync_state support in its driver or
bus.

Signed-off-by: Saravana Kannan <saravanak@google.com>
Link: https://lore.kernel.org/r/20200221080510.197337-3-saravanak@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Saravana Kannan 2020-02-21 00:05:09 -08:00 committed by Greg Kroah-Hartman
parent 21eb93f432
commit ac338acf51
1 changed files with 11 additions and 0 deletions
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11
include/linux/device.h
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@ -798,6 +798,17 @@ static inline struct device_node *dev_of_node(struct device *dev)
return dev->of_node;
}
static inline bool dev_has_sync_state(struct device *dev)
{
if (!dev)
return false;
if (dev->driver && dev->driver->sync_state)
return true;
if (dev->bus && dev->bus->sync_state)
return true;
return false;
}
/*
* High level routines for use by the bus drivers
*/