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PM / Domains: Fix removal of a subdomain

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commit beda5fc1ff9b527059290a97b672d2ee0eb7b92f upstream.

Commit 30e7a65b3f (PM / Domains: Ensure subdomain is not in use
before removing) added a test to ensure that a subdomain is not a
master to another subdomain or if any devices are using the subdomain
before removing. This change incorrectly used the "slave_links" list to
determine if the subdomain is a master to another subdomain, where it
should have been using the "master_links" list instead. The
"slave_links" list will never be empty for a subdomain and so a
subdomain can never be removed. Fix this by testing if the
"master_links" list is empty instead.

Fixes: 30e7a65b3f (PM / Domains: Ensure subdomain is not in use before removing)
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-by: Thierry Reding <treding@nvidia.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jon Hunter 2016-03-04 10:55:14 +00:00 • committed by Greg Kroah-Hartman
parent dabe14168a
commit cab4c949ad
1 changed files with 1 additions and 1 deletions
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2
drivers/base/power/domain.c
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@ -1381,7 +1381,7 @@ int pm_genpd_remove_subdomain(struct generic_pm_domain *genpd,
mutex_lock(&genpd->lock);
if (!list_empty(&subdomain->slave_links) || subdomain->device_count) {
if (!list_empty(&subdomain->master_links) || subdomain->device_count) {
pr_warn("%s: unable to remove subdomain %s\n", genpd->name,
subdomain->name);
ret = -EBUSY;