Remove struct_mutex from ivb_parity_work() function. The ivb_parity_work runs in a workqueue so it cannot race with itself.
Also, it is not protecting anything with the other remaining usage of struct_mutex. Signed-off-by: Luiz Otavio Mello <luiz.me...@estudante.ufscar.br> Suggested-by: Rodrigo Vivi <rodrigo.v...@intel.com> --- drivers/gpu/drm/i915/i915_irq.c | 6 ------ 1 file changed, 6 deletions(-) diff --git a/drivers/gpu/drm/i915/i915_irq.c b/drivers/gpu/drm/i915/i915_irq.c index cdfb09464134..83b08dacd194 100644 --- a/drivers/gpu/drm/i915/i915_irq.c +++ b/drivers/gpu/drm/i915/i915_irq.c @@ -163,11 +163,6 @@ static void ivb_parity_work(struct work_struct *work) u32 misccpctl; u8 slice = 0; - /* We must turn off DOP level clock gating to access the L3 registers. - * In order to prevent a get/put style interface, acquire struct mutex - * any time we access those registers. - */ - mutex_lock(&dev_priv->struct_mutex); /* If we've screwed up tracking, just let the interrupt fire again */ if (drm_WARN_ON(&dev_priv->drm, !dev_priv->l3_parity.which_slice)) @@ -225,7 +220,6 @@ static void ivb_parity_work(struct work_struct *work) gen5_gt_enable_irq(gt, GT_PARITY_ERROR(dev_priv)); spin_unlock_irq(gt->irq_lock); - mutex_unlock(&dev_priv->struct_mutex); } static irqreturn_t valleyview_irq_handler(int irq, void *arg) -- 2.50.1