diff mbox

[02/19] drm/i915: use the correct force_wake function at the PC8 code

Message ID 1385582240-2213-1-git-send-email-przanoni@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Paulo Zanoni Nov. 27, 2013, 7:57 p.m. UTC
From: Paulo Zanoni <paulo.r.zanoni@intel.com>

When I submitted the first patch adding these force wake functions,
Chris Wilson observed that I was using the wrong functions, so I sent
a second version of the patch to correct this problem. The problem is
that v1 was merged instead of v2.

I was able to notice the problem when running the
debugfs-forcewake-user subtest of pm_pc8 from intel-gpu-tools.

V2: - Rebase on the FORCEWAKE_ALL change.

Cc: stable@vger.kernel.org
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
---
 drivers/gpu/drm/i915/intel_display.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Rodrigo Vivi Nov. 29, 2013, 11:14 a.m. UTC | #1
Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>

On Wed, Nov 27, 2013 at 05:57:20PM -0200, Paulo Zanoni wrote:
> From: Paulo Zanoni <paulo.r.zanoni@intel.com>
> 
> When I submitted the first patch adding these force wake functions,
> Chris Wilson observed that I was using the wrong functions, so I sent
> a second version of the patch to correct this problem. The problem is
> that v1 was merged instead of v2.
> 
> I was able to notice the problem when running the
> debugfs-forcewake-user subtest of pm_pc8 from intel-gpu-tools.
> 
> V2: - Rebase on the FORCEWAKE_ALL change.
> 
> Cc: stable@vger.kernel.org
> Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
> ---
>  drivers/gpu/drm/i915/intel_display.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index b0d4132..0eb7053 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -6583,7 +6583,7 @@ static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
>  
>  	/* Make sure we're not on PC8 state before disabling PC8, otherwise
>  	 * we'll hang the machine! */
> -	dev_priv->uncore.funcs.force_wake_get(dev_priv, FORCEWAKE_ALL);
> +	gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL);
>  
>  	if (val & LCPLL_POWER_DOWN_ALLOW) {
>  		val &= ~LCPLL_POWER_DOWN_ALLOW;
> @@ -6617,7 +6617,7 @@ static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
>  			DRM_ERROR("Switching back to LCPLL failed\n");
>  	}
>  
> -	dev_priv->uncore.funcs.force_wake_put(dev_priv, FORCEWAKE_ALL);
> +	gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
>  }
>  
>  void hsw_enable_pc8_work(struct work_struct *__work)
> -- 
> 1.8.3.1
> 
> _______________________________________________
> Intel-gfx mailing list
> Intel-gfx@lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/intel-gfx
Daniel Vetter Nov. 29, 2013, 1:23 p.m. UTC | #2
On Fri, Nov 29, 2013 at 09:14:41AM -0200, Rodrigo Vivi wrote:
> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@gmail.com>
> 
> On Wed, Nov 27, 2013 at 05:57:20PM -0200, Paulo Zanoni wrote:
> > From: Paulo Zanoni <paulo.r.zanoni@intel.com>
> > 
> > When I submitted the first patch adding these force wake functions,
> > Chris Wilson observed that I was using the wrong functions, so I sent
> > a second version of the patch to correct this problem. The problem is
> > that v1 was merged instead of v2.
> > 
> > I was able to notice the problem when running the
> > debugfs-forcewake-user subtest of pm_pc8 from intel-gpu-tools.
> > 
> > V2: - Rebase on the FORCEWAKE_ALL change.
> > 
> > Cc: stable@vger.kernel.org
> > Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>

Picked up for -fixes, thanks for the patch.
-Daniel
diff mbox

Patch

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index b0d4132..0eb7053 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -6583,7 +6583,7 @@  static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
 
 	/* Make sure we're not on PC8 state before disabling PC8, otherwise
 	 * we'll hang the machine! */
-	dev_priv->uncore.funcs.force_wake_get(dev_priv, FORCEWAKE_ALL);
+	gen6_gt_force_wake_get(dev_priv, FORCEWAKE_ALL);
 
 	if (val & LCPLL_POWER_DOWN_ALLOW) {
 		val &= ~LCPLL_POWER_DOWN_ALLOW;
@@ -6617,7 +6617,7 @@  static void hsw_restore_lcpll(struct drm_i915_private *dev_priv)
 			DRM_ERROR("Switching back to LCPLL failed\n");
 	}
 
-	dev_priv->uncore.funcs.force_wake_put(dev_priv, FORCEWAKE_ALL);
+	gen6_gt_force_wake_put(dev_priv, FORCEWAKE_ALL);
 }
 
 void hsw_enable_pc8_work(struct work_struct *__work)