drm/i915: Drop struct_mutex guard from debugfs/framebuffer_info (ba198a10) · Commits · 戴 / test

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

drivers/gpu/drm/i915/i915_debugfs.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -1534,11 +1534,6 @@ 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) {
		@@ -1573,7 +1568,6 @@ 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;
		}