| From | Daniel Scally <> | Subject | [PATCH 01/18] property: Return true in fwnode_device_is_available for node types that do not implement this operation | Date | Mon, 30 Nov 2020 13:31:12 +0000 |
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Some types of fwnode_handle do not implement the device_is_available() check, such as those created by software_nodes. There isn't really a meaningful way to check for the availability of a device that doesn't actually exist, so if the check isn't implemented just assume that the "device" is present.
Suggested-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Daniel Scally <djrscally@gmail.com> --- Changes since RFC v3:
patch introduced
drivers/base/property.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/base/property.c b/drivers/base/property.c index 4c43d30145c6..a5ca2306796f 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -785,9 +785,14 @@ EXPORT_SYMBOL_GPL(fwnode_handle_put); /** * fwnode_device_is_available - check if a device is available for use * @fwnode: Pointer to the fwnode of the device. + * + * For fwnode node types that don't implement the .device_is_available() + * operation, this function returns true. */ bool fwnode_device_is_available(const struct fwnode_handle *fwnode) { + if (!fwnode_has_op(fwnode, device_is_available)) + return true; return fwnode_call_bool_op(fwnode, device_is_available); } EXPORT_SYMBOL_GPL(fwnode_device_is_available); -- 2.25.1
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