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authorViresh Kumar <viresh.kumar@linaro.org>2018-04-17 09:27:34 +0300
committerRob Herring <robh@kernel.org>2018-04-24 16:04:04 +0300
commit4550fe6370ab01f6b1dff97ceffc284d1f38e70c (patch)
treee59baa4f4593e284985e0db65f6fff83b0932ea1 /drivers/of
parent304a39b4bc94525b357083d44d766ff318f208e0 (diff)
downloadlinux-4550fe6370ab01f6b1dff97ceffc284d1f38e70c.tar.xz
of: Don't create device for OPP tables
The OPP tables are present as separate nodes, whose phandle is used in the "operating-points-v2" property of devices. Currently the OF core creates a device for the OPP table unconditionally, which is not used by any kernel code. This patch creates another OF device_id table for the nodes which must be skipped while creating devices and OPP is the only user of it for now. Reported-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Reviewed-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'drivers/of')
-rw-r--r--drivers/of/platform.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c
index c00d81dfac0b..d75050b85d0c 100644
--- a/drivers/of/platform.c
+++ b/drivers/of/platform.c
@@ -32,6 +32,11 @@ const struct of_device_id of_default_bus_match_table[] = {
{} /* Empty terminated list */
};
+static const struct of_device_id of_skipped_node_table[] = {
+ { .compatible = "operating-points-v2", },
+ {} /* Empty terminated list */
+};
+
static int of_dev_node_match(struct device *dev, void *data)
{
return dev->of_node == data;
@@ -356,6 +361,12 @@ static int of_platform_bus_create(struct device_node *bus,
return 0;
}
+ /* Skip nodes for which we don't want to create devices */
+ if (unlikely(of_match_node(of_skipped_node_table, bus))) {
+ pr_debug("%s() - skipping %pOF node\n", __func__, bus);
+ return 0;
+ }
+
if (of_node_check_flag(bus, OF_POPULATED_BUS)) {
pr_debug("%s() - skipping %pOF, already populated\n",
__func__, bus);