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drm/i915: Drop locking around fbdev-fb in debugfs 

All the date we print is invariant for the lifetime of the driver.
And none of it would be protected by the mode_config.mutex anyway.
So drop it.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter 2014-05-29 23:27:00 +02:00
parent f3d28878da
commit 75e2acf24a
1 changed files with 0 additions and 4 deletions
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4
drivers/gpu/drm/i915/i915_debugfs.c
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@ -1675,9 +1675,6 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
#ifdef CONFIG_DRM_I915_FBDEV
struct drm_i915_private *dev_priv = dev->dev_private;
int ret = mutex_lock_interruptible(&dev->mode_config.mutex);
if (ret)
return ret;
ifbdev = dev_priv->fbdev;
fb = to_intel_framebuffer(ifbdev->helper.fb);
@ -1690,7 +1687,6 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
atomic_read(&fb->base.refcount.refcount));
describe_obj(m, fb->obj);
seq_putc(m, '\n');
mutex_unlock(&dev->mode_config.mutex);
#endif
mutex_lock(&dev->mode_config.fb_lock);