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drm/i915: get/put runtime PM at i915_semaphore_status

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Otherwise we will print some WARNs when we read registers and the
machine is suspended.

Testcase: igt/pm_rpm/debugfs-read
Cc: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Paulo Zanoni 2014-07-09 14:31:57 -03:00 committed by Daniel Vetter
parent 9ccd5aeb29
commit 03872064f7
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/i915/i915_debugfs.c
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@ -2314,6 +2314,7 @@ static int i915_semaphore_status(struct seq_file *m, void *unused)
ret = mutex_lock_interruptible(&dev->struct_mutex); ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret) if (ret)
return ret; return ret;
intel_runtime_pm_get(dev_priv);
if (IS_BROADWELL(dev)) { if (IS_BROADWELL(dev)) {
struct page *page; struct page *page;
@ -2363,6 +2364,7 @@ static int i915_semaphore_status(struct seq_file *m, void *unused)
} }
seq_putc(m, '\n'); seq_putc(m, '\n');
intel_runtime_pm_put(dev_priv);
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
return 0; return 0;
} }