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From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Sultan Alsawaf <sultan@kerneltoast.com>
Cc: dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
	intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org, Rodrigo Vivi <rodrigo.vivi@intel.com>
Subject: Re: [PATCH] drm/i915: Don't enable WaIncreaseLatencyIPCEnabled when IPC is disabled
Date: Mon, 4 May 2020 19:12:13 +0300	[thread overview]
Message-ID: <20200504161213.GD6112@intel.com> (raw)
In-Reply-To: <20200430214654.51314-1-sultan@kerneltoast.com>

On Thu, Apr 30, 2020 at 02:46:54PM -0700, Sultan Alsawaf wrote:
> From: Sultan Alsawaf <sultan@kerneltoast.com>
> 
> In commit 5a7d202b1574, a logical AND was erroneously changed to an OR,
> causing WaIncreaseLatencyIPCEnabled to be enabled unconditionally for
> kabylake and coffeelake, even when IPC is disabled. Fix the logic so
> that WaIncreaseLatencyIPCEnabled is only used when IPC is enabled.
> 
> Fixes: 5a7d202b1574 ("drm/i915: Drop WaIncreaseLatencyIPCEnabled/1140 for cnl")
> Cc: stable@vger.kernel.org # 5.3.x+
> Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 8375054ba27d..a52986a9e7a6 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4992,7 +4992,7 @@ static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
>  	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
>  	 * Display WA #1141: kbl,cfl
>  	 */
> -	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) ||
> +	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) &&

Whoops. Thanks for the fix. Pushed.

>  	    dev_priv->ipc_enabled)
>  		latency += 4;
>  
> -- 
> 2.26.2

-- 
Ville Syrjälä
Intel
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

WARNING: multiple messages have this Message-ID (diff)
From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Sultan Alsawaf <sultan@kerneltoast.com>
Cc: dri-devel@lists.freedesktop.org, David Airlie <airlied@linux.ie>,
	intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org,
	stable@vger.kernel.org
Subject: Re: [Intel-gfx] [PATCH] drm/i915: Don't enable WaIncreaseLatencyIPCEnabled when IPC is disabled
Date: Mon, 4 May 2020 19:12:13 +0300	[thread overview]
Message-ID: <20200504161213.GD6112@intel.com> (raw)
In-Reply-To: <20200430214654.51314-1-sultan@kerneltoast.com>

On Thu, Apr 30, 2020 at 02:46:54PM -0700, Sultan Alsawaf wrote:
> From: Sultan Alsawaf <sultan@kerneltoast.com>
> 
> In commit 5a7d202b1574, a logical AND was erroneously changed to an OR,
> causing WaIncreaseLatencyIPCEnabled to be enabled unconditionally for
> kabylake and coffeelake, even when IPC is disabled. Fix the logic so
> that WaIncreaseLatencyIPCEnabled is only used when IPC is enabled.
> 
> Fixes: 5a7d202b1574 ("drm/i915: Drop WaIncreaseLatencyIPCEnabled/1140 for cnl")
> Cc: stable@vger.kernel.org # 5.3.x+
> Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 8375054ba27d..a52986a9e7a6 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4992,7 +4992,7 @@ static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
>  	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
>  	 * Display WA #1141: kbl,cfl
>  	 */
> -	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) ||
> +	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) &&

Whoops. Thanks for the fix. Pushed.

>  	    dev_priv->ipc_enabled)
>  		latency += 4;
>  
> -- 
> 2.26.2

-- 
Ville Syrjälä
Intel
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/intel-gfx

WARNING: multiple messages have this Message-ID (diff)
From: "Ville Syrjälä" <ville.syrjala@linux.intel.com>
To: Sultan Alsawaf <sultan@kerneltoast.com>
Cc: stable@vger.kernel.org, Jani Nikula <jani.nikula@linux.intel.com>,
	Joonas Lahtinen <joonas.lahtinen@linux.intel.com>,
	Rodrigo Vivi <rodrigo.vivi@intel.com>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
	linux-kernel@vger.kernel.org
Subject: Re: [PATCH] drm/i915: Don't enable WaIncreaseLatencyIPCEnabled when IPC is disabled
Date: Mon, 4 May 2020 19:12:13 +0300	[thread overview]
Message-ID: <20200504161213.GD6112@intel.com> (raw)
In-Reply-To: <20200430214654.51314-1-sultan@kerneltoast.com>

On Thu, Apr 30, 2020 at 02:46:54PM -0700, Sultan Alsawaf wrote:
> From: Sultan Alsawaf <sultan@kerneltoast.com>
> 
> In commit 5a7d202b1574, a logical AND was erroneously changed to an OR,
> causing WaIncreaseLatencyIPCEnabled to be enabled unconditionally for
> kabylake and coffeelake, even when IPC is disabled. Fix the logic so
> that WaIncreaseLatencyIPCEnabled is only used when IPC is enabled.
> 
> Fixes: 5a7d202b1574 ("drm/i915: Drop WaIncreaseLatencyIPCEnabled/1140 for cnl")
> Cc: stable@vger.kernel.org # 5.3.x+
> Signed-off-by: Sultan Alsawaf <sultan@kerneltoast.com>
> ---
>  drivers/gpu/drm/i915/intel_pm.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 8375054ba27d..a52986a9e7a6 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -4992,7 +4992,7 @@ static void skl_compute_plane_wm(const struct intel_crtc_state *crtc_state,
>  	 * WaIncreaseLatencyIPCEnabled: kbl,cfl
>  	 * Display WA #1141: kbl,cfl
>  	 */
> -	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) ||
> +	if ((IS_KABYLAKE(dev_priv) || IS_COFFEELAKE(dev_priv)) &&

Whoops. Thanks for the fix. Pushed.

>  	    dev_priv->ipc_enabled)
>  		latency += 4;
>  
> -- 
> 2.26.2

-- 
Ville Syrjälä
Intel

  parent reply	other threads:[~2020-05-04 16:12 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-30 21:46 [Intel-gfx] [PATCH] drm/i915: Don't enable WaIncreaseLatencyIPCEnabled when IPC is disabled Sultan Alsawaf
2020-04-30 21:46 ` Sultan Alsawaf
2020-05-04  7:28 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for " Patchwork
2020-05-04  7:51 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2020-05-04 15:27 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
2020-05-04 16:12 ` Ville Syrjälä [this message]
2020-05-04 16:12   ` [PATCH] " Ville Syrjälä
2020-05-04 16:12   ` [Intel-gfx] " Ville Syrjälä

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