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drm/i915: Drop struct_mutex guard from debugfs/framebuffer_info

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

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20191004134015.13204-17-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-10-04 14:40:11 +01:00
parent cb5eb07278
commit ba198a10bf
1 changed files with 0 additions and 6 deletions
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6
drivers/gpu/drm/i915/i915_debugfs.c
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@ -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;
}