On 25/09/2019 11:01, Chris Wilson wrote:
struct_mutex provides no serialisation of the registers and data
structures being saved and restored across suspend/resume. It is
completely superfluous here.
Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/i915/i915_suspend.c | 8 --------
1 file changed, 8 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_suspend.c b/drivers/gpu/drm/i915/i915_suspend.c
index 8508a01ad8b9..1bbfd8fd5124 100644
--- a/drivers/gpu/drm/i915/i915_suspend.c
+++ b/drivers/gpu/drm/i915/i915_suspend.c
@@ -65,8 +65,6 @@ int i915_save_state(struct drm_i915_private *dev_priv)
struct pci_dev *pdev = dev_priv->drm.pdev;
int i;
- mutex_lock(&dev_priv->drm.struct_mutex);
-
i915_save_display(dev_priv);
if (IS_GEN(dev_priv, 4))
@@ -100,8 +98,6 @@ int i915_save_state(struct drm_i915_private *dev_priv)
dev_priv->regfile.saveSWF3[i] = I915_READ(SWF3(i));
}
- mutex_unlock(&dev_priv->drm.struct_mutex);
-
return 0;
}
@@ -110,8 +106,6 @@ int i915_restore_state(struct drm_i915_private *dev_priv)
struct pci_dev *pdev = dev_priv->drm.pdev;
int i;
- mutex_lock(&dev_priv->drm.struct_mutex);
-
if (IS_GEN(dev_priv, 4))
pci_write_config_word(pdev, GCDGMBUS,
dev_priv->regfile.saveGCDGMBUS);
@@ -145,8 +139,6 @@ int i915_restore_state(struct drm_i915_private *dev_priv)
I915_WRITE(SWF3(i), dev_priv->regfile.saveSWF3[i]);
}
- mutex_unlock(&dev_priv->drm.struct_mutex);
-
intel_gmbus_reset(dev_priv);
return 0;
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Regards,
Tvrtko
_______________________________________________
Intel-gfx mailing list
Intel-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/intel-gfx
