9270388e18
We change the drps/ips sw/hw state from different callers: Our own irq handler, the external intel-ips module and from process context. Most of these callers don't take any lock at all. Protect everything by making the mchdev_lock irqsave and grabbing it in all relevant callsites. Note that we have to convert a few sleeps in the drps enable/disable code to delays, but alas, I'm not volunteering to restructure the code around a few work items. For paranoia add a spin_locked assert to ironlake_set_drps, too. v2: Move one access inside the lock protection. Caught by the dev_priv->ips mass-rename ... v3: Resolve rebase conflict. Reviewed-by: Damien Lespiau <damien.lespiau@intel.com> Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk> Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> |
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