[Intel-gfx] [PATCH 23/27] drm/i915: Drop struct_mutex guard from debugfs/framebuffer_info

[Chris Wilson]

It protects nothing being accessed for the intel_framebuffer, so it's
own locking had better be sufficient.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_debugfs.c | 6 ------
 1 file changed, 6 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index d4a7cda60679..5e984ba27bef 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1445,11 +1445,6 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 	struct drm_device *dev = &dev_priv->drm;
 	struct intel_framebuffer *fbdev_fb = NULL;
 	struct drm_framebuffer *drm_fb;
-	int ret;
-
-	ret = mutex_lock_interruptible(&dev->struct_mutex);
-	if (ret)
-		return ret;
 
 #ifdef CONFIG_DRM_FBDEV_EMULATION
 	if (dev_priv->fbdev && dev_priv->fbdev->helper.fb) {
@@ -1484,7 +1479,6 @@ static int i915_gem_framebuffer_info(struct seq_file *m, void *data)
 		seq_putc(m, '\n');
 	}
 	mutex_unlock(&dev->mode_config.fb_lock);
-	mutex_unlock(&dev->struct_mutex);
 
 	return 0;
 }
-- 
2.23.0