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OpenCloudOS-Kernel
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drivers/base: fix devres handling for master device 

We weren't handling the devres issues for the master device failing a
bind, or being unbound properly.  Add a devres group to contain these,
and release the resources at the appropriate points.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Russell King 2014-02-07 20:09:27 +00:00 committed by Greg Kroah-Hartman
parent da9846ae15
commit 9e1ccb4a77
1 changed files with 8 additions and 0 deletions
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8
drivers/base/component.c
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@ -133,9 +133,16 @@ static int try_to_bring_up_master(struct master *master,
goto out;
}
if (!devres_open_group(master->dev, NULL, GFP_KERNEL)) {
ret = -ENOMEM;
goto out;
}
/* Found all components */
ret = master->ops->bind(master->dev);
if (ret < 0) {
devres_release_group(master->dev, NULL);
dev_info(master->dev, "master bind failed: %d\n", ret);
master_remove_components(master);
goto out;
}
@ -166,6 +173,7 @@ static void take_down_master(struct master *master)
{
if (master->bound) {
master->ops->unbind(master->dev);
devres_release_group(master->dev, NULL);
master->bound = false;
}