diff mbox series

[12/31] drm/i915: Remove lingering pci_save_state

Message ID 20240924204222.246862-13-rodrigo.vivi@intel.com (mailing list archive)
State New, archived
Headers show
Series Reconcile i915's and xe's display power mgt sequences | expand

Commit Message

Rodrigo Vivi Sept. 24, 2024, 8:35 p.m. UTC
The pairing pci_restore_state was removed by commit
'b7e53aba2f0e ("drm/i915: remove restore in resume")'
to fix a hardware hang in resume.

Furthermore, it looks like PCI subsystem should be taking care
of the save and restore here.

Remove the lingering/stand-alone pci_save_state call.

Cc: Anshuman Gupta <anshuman.gupta@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
---
 drivers/gpu/drm/i915/i915_driver.c | 2 --
 1 file changed, 2 deletions(-)

Comments

Gupta, Anshuman Sept. 27, 2024, 8:45 a.m. UTC | #1
> -----Original Message-----
> From: Vivi, Rodrigo <rodrigo.vivi@intel.com>
> Sent: Wednesday, September 25, 2024 2:06 AM
> To: intel-gfx@lists.freedesktop.org; intel-xe@lists.freedesktop.org
> Cc: Deak, Imre <imre.deak@intel.com>; Vivi, Rodrigo <rodrigo.vivi@intel.com>;
> Gupta, Anshuman <anshuman.gupta@intel.com>; Ville Syrjälä
> <ville.syrjala@linux.intel.com>
> Subject: [PATCH 12/31] drm/i915: Remove lingering pci_save_state
> 
> The pairing pci_restore_state was removed by commit 'b7e53aba2f0e
> ("drm/i915: remove restore in resume")'
> to fix a hardware hang in resume.
> 
> Furthermore, it looks like PCI subsystem should be taking care of the save and
> restore here.
> 
> Remove the lingering/stand-alone pci_save_state call.
> 
> Cc: Anshuman Gupta <anshuman.gupta@intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_driver.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_driver.c
> b/drivers/gpu/drm/i915/i915_driver.c
> index ce2dd03136d3..4fc9d8bce1fd 100644
> --- a/drivers/gpu/drm/i915/i915_driver.c
> +++ b/drivers/gpu/drm/i915/i915_driver.c
> @@ -1008,8 +1008,6 @@ static int i915_drm_suspend(struct drm_device *dev)
>  		intel_display_driver_disable_user_access(dev_priv);
>  	}
> 
> -	pci_save_state(pdev);
Looks good to me!
Reviewed-by: Anshuman Gupta <anshuman.gupta@intel.com>

> -
>  	intel_display_driver_suspend(dev_priv);
> 
>  	intel_irq_suspend(dev_priv);
> --
> 2.46.0
Cavitt, Jonathan Oct. 7, 2024, 9:10 p.m. UTC | #2
-----Original Message-----
From: Intel-gfx <intel-gfx-bounces@lists.freedesktop.org> On Behalf Of Rodrigo Vivi
Sent: Tuesday, September 24, 2024 1:36 PM
To: intel-gfx@lists.freedesktop.org; intel-xe@lists.freedesktop.org
Cc: Deak, Imre <imre.deak@intel.com>; Vivi, Rodrigo <rodrigo.vivi@intel.com>; Gupta, Anshuman <anshuman.gupta@intel.com>; Ville Syrjälä <ville.syrjala@linux.intel.com>
Subject: [PATCH 12/31] drm/i915: Remove lingering pci_save_state
> 
> The pairing pci_restore_state was removed by commit
> 'b7e53aba2f0e ("drm/i915: remove restore in resume")'
> to fix a hardware hang in resume.
> 
> Furthermore, it looks like PCI subsystem should be taking care
> of the save and restore here.
> 
> Remove the lingering/stand-alone pci_save_state call.
> 
> Cc: Anshuman Gupta <anshuman.gupta@intel.com>
> Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
> Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>

LGTM.  Though the wording of the commit message may
initially confuse some people (me) into thinking
pci_save_state is now unused and can have its definition
removed, which is not the case.  I can't think of any
better alternatives, though, so I won't block on it.

Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
-Jonathan Cavitt

Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
> ---
>  drivers/gpu/drm/i915/i915_driver.c | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
> index ce2dd03136d3..4fc9d8bce1fd 100644
> --- a/drivers/gpu/drm/i915/i915_driver.c
> +++ b/drivers/gpu/drm/i915/i915_driver.c
> @@ -1008,8 +1008,6 @@ static int i915_drm_suspend(struct drm_device *dev)
>  		intel_display_driver_disable_user_access(dev_priv);
>  	}
>  
> -	pci_save_state(pdev);
> -
>  	intel_display_driver_suspend(dev_priv);
>  
>  	intel_irq_suspend(dev_priv);
> -- 
> 2.46.0
> 
>
diff mbox series

Patch

diff --git a/drivers/gpu/drm/i915/i915_driver.c b/drivers/gpu/drm/i915/i915_driver.c
index ce2dd03136d3..4fc9d8bce1fd 100644
--- a/drivers/gpu/drm/i915/i915_driver.c
+++ b/drivers/gpu/drm/i915/i915_driver.c
@@ -1008,8 +1008,6 @@  static int i915_drm_suspend(struct drm_device *dev)
 		intel_display_driver_disable_user_access(dev_priv);
 	}
 
-	pci_save_state(pdev);
-
 	intel_display_driver_suspend(dev_priv);
 
 	intel_irq_suspend(dev_priv);