diff options
author | Sudeep Holla <Sudeep.Holla@arm.com> | 2017-07-14 11:51:48 +0100 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-07-27 15:08:08 -0700 |
commit | 7bd804a05eb00954891abf66c6125d054b8a0f93 (patch) | |
tree | 22b88ad586505fa39d8320de4c48602c13a98f2e /net/batman-adv/gateway_client.c | |
parent | 69fbb442144abc4a7288d42edb6eb8a1ee799d87 (diff) |
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
commit 975e83cfb8dc16e7a2fdc58188c77c0c605876c2 upstream.
If the genpd->attach_dev or genpd->power_on fails, genpd_dev_pm_attach
may return -EPROBE_DEFER initially. However genpd_alloc_dev_data sets
the PM domain for the device unconditionally.
When subsequent attempts are made to call genpd_dev_pm_attach, it may
return -EEXISTS checking dev->pm_domain without re-attempting to call
attach_dev or power_on.
platform_drv_probe then attempts to call drv->probe as the return value
-EEXIST != -EPROBE_DEFER, which may end up in a situation where the
device is accessed without it's power domain switched on.
Fixes: f104e1e5ef57 (PM / Domains: Re-order initialization of generic_pm_domain_data)
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net/batman-adv/gateway_client.c')
0 files changed, 0 insertions, 0 deletions