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authorGrant Likely <grant.likely@secretlab.ca>2011-01-03 15:51:11 -0700
committerGrant Likely <grant.likely@secretlab.ca>2011-01-03 16:02:49 -0700
commitcd1e65044d4473cca9a01bae7b7938f065044a4b (patch)
treea2c958b4bd303c88320650d4e8251e0aba64ef91 /drivers
parent6bd121e2d4dcabb145d390a7131ec83102dfb838 (diff)
of/device: Don't register disabled devices
Device nodes with the property status="disabled" are not usable and so don't register them when parsing the device tree for devices. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> Cc: Hollis Blanchard <hollis_blanchard@mentor.com> Cc: Deepak Saxena <deepak_saxena@mentor.com> Cc: Scott Wood <scottwood@freescale.com>, Cc: David Gibson <david@gibson.dropbear.id.au> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/of/platform.c22
1 files changed, 14 insertions, 8 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index 5b4a07f1220e..c01cd1ac7617 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -633,6 +633,9 @@ EXPORT_SYMBOL(of_device_alloc);
* @np: pointer to node to create device for
* @bus_id: name to assign device
* @parent: Linux device model parent device.
+ *
+ * Returns pointer to created platform device, or NULL if a device was not
+ * registered. Unavailable devices will not get registered.
*/
struct platform_device *of_platform_device_create(struct device_node *np,
const char *bus_id,
@@ -640,6 +643,9 @@ struct platform_device *of_platform_device_create(struct device_node *np,
{
struct platform_device *dev;
+ if (!of_device_is_available(np))
+ return NULL;
+
dev = of_device_alloc(np, bus_id, parent);
if (!dev)
return NULL;
@@ -683,8 +689,9 @@ static int of_platform_bus_create(const struct device_node *bus,
pr_debug(" create child: %s\n", child->full_name);
dev = of_platform_device_create(child, NULL, parent);
if (dev == NULL)
- rc = -ENOMEM;
- else if (!of_match_node(matches, child))
+ continue;
+
+ if (!of_match_node(matches, child))
continue;
if (rc == 0) {
pr_debug(" and sub busses\n");
@@ -733,10 +740,9 @@ int of_platform_bus_probe(struct device_node *root,
if (of_match_node(matches, root)) {
pr_debug(" root match, create all sub devices\n");
dev = of_platform_device_create(root, NULL, parent);
- if (dev == NULL) {
- rc = -ENOMEM;
+ if (dev == NULL)
goto bail;
- }
+
pr_debug(" create all sub busses\n");
rc = of_platform_bus_create(root, matches, &dev->dev);
goto bail;
@@ -748,9 +754,9 @@ int of_platform_bus_probe(struct device_node *root,
pr_debug(" match: %s\n", child->full_name);
dev = of_platform_device_create(child, NULL, parent);
if (dev == NULL)
- rc = -ENOMEM;
- else
- rc = of_platform_bus_create(child, matches, &dev->dev);
+ continue;
+
+ rc = of_platform_bus_create(child, matches, &dev->dev);
if (rc) {
of_node_put(child);
break;

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