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| author | Tejun Heo <tj@kernel.org> | 2016-09-05 15:38:13 +0300 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2016-09-05 16:07:53 +0300 |
| commit | c86d06ba2818c5126078cb0cf4e0175ec381045b (patch) | |
| tree | 52f90ab2cbd248e6d958de791671ee4aa78d90a8 /Documentation | |
| parent | c6935931c1894ff857616ff8549b61236a19148f (diff) | |
| download | linux-c86d06ba2818c5126078cb0cf4e0175ec381045b.tar.xz | |
PM / QoS: avoid calling cancel_delayed_work_sync() during early boot
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>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions