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coresight: platform: Use fwnode handle for device search

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

Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Suzuki K Poulose 2019-06-19 13:53:02 -06:00 • committed by Greg Kroah-Hartman
parent 688da45f20
commit 20961aea98
1 changed files with 9 additions and 7 deletions
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16
drivers/hwtracing/coresight/coresight-platform.c
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@ -36,14 +36,13 @@ static int coresight_alloc_conns(struct device *dev,
return 0; return 0;
} }
#ifdef CONFIG_OF static int coresight_device_fwnode_match(struct device *dev, void *fwnode)
static int of_dev_node_match(struct device *dev, void *data)
{ {
return dev->of_node == data; return dev_fwnode(dev) == fwnode;
} }
static struct device * 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; struct device *dev = NULL;
@ -52,7 +51,7 @@ of_coresight_get_endpoint_device(struct device_node *endpoint)
* platform bus. * platform bus.
*/ */
dev = bus_find_device(&platform_bus_type, NULL, dev = bus_find_device(&platform_bus_type, NULL,
endpoint, of_dev_node_match); fwnode, coresight_device_fwnode_match);
if (dev) if (dev)
return dev; return dev;
@ -61,9 +60,10 @@ of_coresight_get_endpoint_device(struct device_node *endpoint)
* looking for the device that matches the endpoint node. * looking for the device that matches the endpoint node.
*/ */
return bus_find_device(&amba_bustype, NULL, return bus_find_device(&amba_bustype, NULL,
endpoint, of_dev_node_match); fwnode, coresight_device_fwnode_match);
} }
#ifdef CONFIG_OF
static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep) static inline bool of_coresight_legacy_ep_is_input(struct device_node *ep)
{ {
return of_property_read_bool(ep, "slave-mode"); return of_property_read_bool(ep, "slave-mode");
@ -191,6 +191,7 @@ static int of_coresight_parse_endpoint(struct device *dev,
struct device_node *rparent = NULL; struct device_node *rparent = NULL;
struct device_node *rep = NULL; struct device_node *rep = NULL;
struct device *rdev = NULL; struct device *rdev = NULL;
struct fwnode_handle *rdev_fwnode;
do { do {
/* Parse the local port details */ /* Parse the local port details */
@ -209,8 +210,9 @@ static int of_coresight_parse_endpoint(struct device *dev,
if (of_graph_parse_endpoint(rep, &rendpoint)) if (of_graph_parse_endpoint(rep, &rendpoint))
break; break;
rdev_fwnode = of_fwnode_handle(rparent);
/* If the remote device is not available, defer probing */ /* 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) { if (!rdev) {
ret = -EPROBE_DEFER; ret = -EPROBE_DEFER;
break; break;