diff options
author | Sudeep Holla <[email protected]> | 2017-07-14 11:51:48 +0100 |
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committer | Rafael J. Wysocki <[email protected]> | 2017-07-19 14:41:11 +0200 |
commit | 975e83cfb8dc16e7a2fdc58188c77c0c605876c2 (patch) | |
tree | d02e4cc1e92ca48779ae8010486562de99cdd88d /net/switchdev/switchdev.c | |
parent | af3eb27433356ed4b6e124fd446a425a0ccf4e49 (diff) |
PM / Domains: defer dev_pm_domain_set() until genpd->attach_dev succeeds if present
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)
Cc: 4.4+ <[email protected]> # v4.4+
Signed-off-by: Sudeep Holla <[email protected]>
Acked-by: Ulf Hansson <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Diffstat (limited to 'net/switchdev/switchdev.c')
0 files changed, 0 insertions, 0 deletions