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drm/i915: Remove struct_mutex guard for debugfs/opregion 

Having a struct_mutex around the read of a BIOS blob serves no purpose.

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/20191004134015.13204-18-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2019-10-04 14:40:12 +01:00
parent ba198a10bf
commit 6c3828ab09
1 changed files with 1 additions and 11 deletions
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12
drivers/gpu/drm/i915/i915_debugfs.c
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@ -1500,21 +1500,11 @@ static int i915_ring_freq_table(struct seq_file *m, void *unused)
static int i915_opregion(struct seq_file *m, void *unused)
{
struct drm_i915_private *dev_priv = node_to_i915(m->private);
struct drm_device *dev = &dev_priv->drm;
struct intel_opregion *opregion = &dev_priv->opregion;
int ret;
ret = mutex_lock_interruptible(&dev->struct_mutex);
if (ret)
goto out;
struct intel_opregion *opregion = &node_to_i915(m->private)->opregion;
if (opregion->header)
seq_write(m, opregion->header, OPREGION_SIZE);
mutex_unlock(&dev->struct_mutex);
out:
return 0;
}