From 65c475c6dd607226159a774d7c3d7ff4b6e00255 Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Tue, 2 Jan 2018 15:12:31 +0000 Subject: [PATCH] drm/i915: Hold rpm wakeref for modifying the global seqno MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit 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 Reviewed-by: Michał Winiarski Link: https://patchwork.freedesktop.org/patch/msgid/20180102151235.3949-15-chris@chris-wilson.co.uk --- drivers/gpu/drm/i915/i915_debugfs.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index d81cb25..2bb6307 100644 --- a/drivers/gpu/drm/i915/i915_debugfs.c +++ b/drivers/gpu/drm/i915/i915_debugfs.c @@ -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; -- 2.7.4