From: Chris Wilson Date: Tue, 2 Jan 2018 15:12:31 +0000 (+0000) Subject: drm/i915: Hold rpm wakeref for modifying the global seqno X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=65c475c6dd607226159a774d7c3d7ff4b6e00255;p=openwrt%2Fstaging%2Fblogic.git 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 Reviewed-by: Michał Winiarski Link: https://patchwork.freedesktop.org/patch/msgid/20180102151235.3949-15-chris@chris-wilson.co.uk --- diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c index d81cb2513069..2bb63073d73f 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;