https://github.com/torvalds/linux
Revision c86d06ba2818c5126078cb0cf4e0175ec381045b authored by Tejun Heo on 05 September 2016, 12:38:13 UTC, committed by Rafael J. Wysocki on 05 September 2016, 13:07:53 UTC
of_clk_init() ends up calling into pm_qos_update_request() very early
during boot where irq is expected to stay disabled.
pm_qos_update_request() uses cancel_delayed_work_sync() which
correctly assumes that irq is enabled on invocation and
unconditionally disables and re-enables it.

Gate cancel_delayed_work_sync() invocation with kevented_up() to avoid
enabling irq unexpectedly during early boot.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-and-tested-by: Qiao Zhou <qiaozhou@asrmicro.com>
Link: http://lkml.kernel.org/r/d2501c4c-8e7b-bea3-1b01-000b36b5dfe9@asrmicro.com
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
1 parent c693593
History
Tip revision: c86d06ba2818c5126078cb0cf4e0175ec381045b authored by Tejun Heo on 05 September 2016, 12:38:13 UTC
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
Tip revision: c86d06b
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