The set of available structs is not protected by the spinlock, and for
the single read we can use READ_ONCE instead.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Reviewed-by: Joonas Lahtinen <joonas.lahtinen@xxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_debugfs.c | 9 +++------
1 file changed, 3 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_debugfs.c b/drivers/gpu/drm/i915/i915_debugfs.c
index fcac795d4396..f30591f44d3a 100644
--- a/drivers/gpu/drm/i915/i915_debugfs.c
+++ b/drivers/gpu/drm/i915/i915_debugfs.c
@@ -1459,17 +1459,14 @@ static int ironlake_drpc_info(struct seq_file *m)
static int i915_forcewake_domains(struct seq_file *m, void *data)
{
- struct drm_i915_private *dev_priv = node_to_i915(m->private);
+ struct drm_i915_private *i915 = node_to_i915(m->private);
struct intel_uncore_forcewake_domain *fw_domain;
unsigned int tmp;
- spin_lock_irq(&dev_priv->uncore.lock);
- for_each_fw_domain(fw_domain, dev_priv, tmp) {
+ for_each_fw_domain(fw_domain, i915, tmp)
seq_printf(m, "%s.wake_count = %u\n",
intel_uncore_forcewake_domain_to_str(fw_domain->id),
- fw_domain->wake_count);
- }
- spin_unlock_irq(&dev_priv->uncore.lock);
+ READ_ONCE(fw_domain->wake_count));
return 0;
}
--
2.11.0
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