drm/i915: Drop locking around fbdev-fb in debugfs
authorDaniel Vetter <daniel.vetter@ffwll.ch>
Thu, 29 May 2014 21:27:00 +0000 (23:27 +0200)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Wed, 11 Jun 2014 14:57:35 +0000 (16:57 +0200)
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>
drivers/gpu/drm/i915/i915_debugfs.c

index c2e211a7a508dabbf7001db1d7a9b402674a54cd..7e884eaa02f1c12f55d68b82fee1e365d0157927 100644 (file)
@@ -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);