diff options
| author | Grant Likely <grant.likely@linaro.org> | 2014-11-19 23:35:39 +0100 |
|---|---|---|
| committer | Grant Likely <grant.likely@linaro.org> | 2014-11-20 11:51:18 +0100 |
| commit | 2d0747c4b68be8eb8ccfa2c538f2f5dd2ea89094 (patch) | |
| tree | a52d97a377369b58a018488a15d700652bec6e74 /drivers/of | |
| parent | of/fdt: export fdt blob as /sys/firmware/fdt (diff) | |
| download | linux-2d0747c4b68be8eb8ccfa2c538f2f5dd2ea89094.tar.xz linux-2d0747c4b68be8eb8ccfa2c538f2f5dd2ea89094.zip | |
of: Properly set the OF_POPULATED_BUS flag on root node
of_platform_populate() takes a subset of the device tree and turns it
into a set of platform_devices. At the same time it sets the
OF_POPULATED_BUS flag in each bus nodes so that of_platform_depopulate()
can undo the operation at a later time. However, it doesn't set the flag
on the root of the population tree which means that dynamic modifications
of the device tree at runtime will not create/destroy devices correctly.
Fix of_platform_populate() to set the OF_POPULATED_BUS flag on the node
it is called with.
Signed-off-by: Grant Likely <grant.likely@linaro.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Pawel Moll <pawel.moll@arm.com>
Diffstat (limited to 'drivers/of')
| -rw-r--r-- | drivers/of/platform.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/of/platform.c b/drivers/of/platform.c index 7c6771986c06..656cccf0e680 100644 --- a/drivers/of/platform.c +++ b/drivers/of/platform.c @@ -500,6 +500,7 @@ int of_platform_populate(struct device_node *root, if (rc) break; } + of_node_set_flag(root, OF_POPULATED_BUS); of_node_put(root); return rc; @@ -542,7 +543,10 @@ static int of_platform_device_destroy(struct device *dev, void *data) */ void of_platform_depopulate(struct device *parent) { - device_for_each_child(parent, NULL, of_platform_device_destroy); + if (parent->of_node && of_node_check_flag(parent->of_node, OF_POPULATED_BUS)) { + device_for_each_child(parent, NULL, of_platform_device_destroy); + of_node_clear_flag(parent->of_node, OF_POPULATED_BUS); + } } EXPORT_SYMBOL_GPL(of_platform_depopulate); |