From: Sultan Alsawaf <sultan@kerneltoast.com>
To: unlisted-recipients:; (no To-header on input)
Cc: "Sultan Alsawaf" <sultan@kerneltoast.com>,
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>,
"Ville Syrjälä" <ville.syrjala@linux.intel.com>,
intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] drm/i915: Don't enable WaIncreaseLatencyIPCEnabled when IPC is disabled
Date: Thu, 30 Apr 2020 14:46:54 -0700 [thread overview]
Message-ID: <20200430214654.51314-1-sultan@kerneltoast.com> (raw)
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)) &&
dev_priv->ipc_enabled)
latency += 4;
--
2.26.2
next reply other threads:[~2020-04-30 21:47 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-30 21:46 Sultan Alsawaf [this message]
2020-05-04 16:12 ` [PATCH] drm/i915: Don't enable WaIncreaseLatencyIPCEnabled when IPC is disabled Ville Syrjälä
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20200430214654.51314-1-sultan@kerneltoast.com \
--to=sultan@kerneltoast.com \
--cc=airlied@linux.ie \
--cc=daniel@ffwll.ch \
--cc=dri-devel@lists.freedesktop.org \
--cc=intel-gfx@lists.freedesktop.org \
--cc=jani.nikula@linux.intel.com \
--cc=joonas.lahtinen@linux.intel.com \
--cc=linux-kernel@vger.kernel.org \
--cc=rodrigo.vivi@intel.com \
--cc=stable@vger.kernel.org \
--cc=ville.syrjala@linux.intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).