Commit 65c475c6 authored Jan 02, 2018 by Chris Wilson

drm/i915: Hold rpm wakeref for modifying the global seqno



To modify the global seqno may require rewriting a few registers, which
requires us to hold the rpm wakeref. We must therefore take it around
the call to i915_gem_set_global_seqno() in debugfs, on behalf of the
user.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Michał Winiarski <michal.winiarski@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180102151235.3949-15-chris@chris-wilson.co.uk

parent f3c9d407

drivers/gpu/drm/i915/i915_debugfs.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -988,7 +988,10 @@ i915_next_seqno_set(void *data, u64 val)
		if (ret)
		return ret;

		intel_runtime_pm_get(dev_priv);
		ret = i915_gem_set_global_seqno(dev, val);
		intel_runtime_pm_put(dev_priv);

		mutex_unlock(&dev->struct_mutex);

		return ret;