[PATCH 20/25] coresight: platform: Use fwnode handle for device search

Suzuki K Poulose
2019-03-20T18:51:14Z

We match of_node while searching for a device. Make this
more generic in preparation for the ACPI support by using
fwnode_handle.

Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
drivers/hwtracing/coresight/coresight-platform.c | 16 +++++++++-------
1 file changed, 9 insertions(+), 7 deletions(-)

diff --git a/drivers/hwtracing/coresight/coresight-platform.c b/drivers/hwtracing/coresight/coresight-platform.c
index 93b6c87..877ed2b 100644
--- a/drivers/hwtracing/coresight/coresight-platform.c
+++ b/drivers/hwtracing/coresight/coresight-platform.c
@@ -31,14 +31,13 @@ static int coresight_alloc_conns(struct device *dev,
return 0;
}

-#ifdef CONFIG_OF
-static int of_dev_node_match(struct device *dev, void *data)
+static int coresight_fwnode_handle_match(struct device *dev, void *data)
{
- return dev->of_node == data;
+ return dev_fwnode(dev) == data;
}

static struct device *
-of_coresight_get_endpoint_device(struct device_node *endpoint)
+coresight_find_device_by_fwnode(struct fwnode_handle *fwnode)
{
struct device *dev = NULL;

@@ -47,7 +46,7 @@ of_coresight_get_endpoint_device(struct device_node *endpoint)
* platform bus.
*/
dev = bus_find_device(&platform_bus_type, NULL,
- endpoint, of_dev_node_match);
+ fwnode, coresight_fwnode_handle_match);
if (dev)
return dev;

@@ -56,9 +55,10 @@ of_coresight_get_endpoint_device(struct device_node *endpoint)
* looking for the device that matches the endpoint node.
*/
return bus_find_device(&amba_bustype, NULL,
- endpoint, of_dev_node_match);
+ fwnode, coresight_fwnode_handle_match);
}

+#ifdef CONFIG_OF
static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep)
{
return of_property_read_bool(ep, "slave-mode");
@@ -186,6 +186,7 @@ static int of_coresight_parse_endpoint(struct device *dev,
struct device_node *rparent = NULL;
struct device_node *rep = NULL;
struct device *rdev = NULL;
+ struct fwnode_handle *rdev_fwnode;

do {
/* Parse the local port details */
@@ -204,8 +205,9 @@ static int of_coresight_parse_endpoint(struct device *dev,
if (of_graph_parse_endpoint(rep, &rendpoint))
break;

+ rdev_fwnode = of_fwnode_handle(rparent);
/* If the remote device is not available, defer probing */
- rdev = of_coresight_get_endpoint_device(rparent);
+ rdev = coresight_find_device_by_fwnode(rdev_fwnode);
if (!rdev) {
ret = -EPROBE_DEFER;
break;
--
2.7.4