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drm/i915: Remove struct_mutex in i915_irq.c

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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.mello@estudante.ufscar.br>
Suggested-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://lore.kernel.org/r/20250908131518.36625-3-luiz.mello@estudante.ufscar.br
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Luiz Otavio Mello 2025-09-08 09:15:10 -04:00 committed by Rodrigo Vivi
parent 86a9fe82e9
commit 793d31671b
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GPG Key ID: FA625F640EEB13CA
1 changed files with 0 additions and 6 deletions
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6
drivers/gpu/drm/i915/i915_irq.c
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@ -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)