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| author | Grant Likely <grant.likely@secretlab.ca> | 2011-03-18 10:21:29 -0600 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2011-03-23 14:55:56 -0600 |
| commit | 1eed4c077c31450bfcd0249aebb21d96fc5d5d3c (patch) | |
| tree | a5d7117d36989ea86b121ed53f711bfcbbbf8bd8 /drivers/of/platform.c | |
| parent | a52f07ecd143baee51623b063be5007585748a4f (diff) | |
| download | linux-1eed4c077c31450bfcd0249aebb21d96fc5d5d3c.tar.bz2 | |
dt: eliminate OF_NO_DEEP_PROBE and test for NULL match table
There are no users of OF_NO_DEEP_PROBE, and of_match_node() now
gracefully handles being passed a NULL pointer, so the checks at the
top of of_platform_bus_probe can be dropped.
While at it, consolidate the root node pointer check to be easier to
read and tidy up related comments.
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'drivers/of/platform.c')
| -rw-r--r-- | drivers/of/platform.c | 17 |
1 files changed, 5 insertions, 12 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c index f489e36af892..63d3cb73bdb9 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -212,7 +212,7 @@ EXPORT_SYMBOL(of_platform_device_create); /** * of_platform_bus_create() - Create a device for a node and its children. * @bus: device node of the bus to instantiate - * @matches: match table, NULL to use the default, OF_NO_DEEP_PROBE to + * @matches: match table for bus nodes * disallow recursive creation of child buses * @parent: parent for new device, or NULL for top level. * @@ -245,7 +245,7 @@ static int of_platform_bus_create(struct device_node *bus, /** * of_platform_bus_probe() - Probe the device-tree for platform buses * @root: parent of the first level to probe or NULL for the root of the tree - * @matches: match table, NULL to use the default + * @matches: match table for bus nodes * @parent: parent to hook devices from, NULL for toplevel * * Note that children of the provided root are not instantiated as devices @@ -258,21 +258,14 @@ int of_platform_bus_probe(struct device_node *root, struct device_node *child; int rc = 0; - if (WARN_ON(!matches || matches == OF_NO_DEEP_PROBE)) - return -EINVAL; - if (root == NULL) - root = of_find_node_by_path("/"); - else - of_node_get(root); - if (root == NULL) + root = root ? of_node_get(root) : of_find_node_by_path("/"); + if (!root) return -EINVAL; pr_debug("of_platform_bus_probe()\n"); pr_debug(" starting at: %s\n", root->full_name); - /* Do a self check of bus type, if there's a match, create - * children - */ + /* Do a self check of bus type, if there's a match, create children */ if (of_match_node(matches, root)) { rc = of_platform_bus_create(root, matches, parent); } else for_each_child_of_node(root, child) { |