linux-kernel - [PATCH AUTOSEL for 4.9 134/281] ASoC: Intel: Skylake: Disable clock gating during firmware and library download

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20180319155742.13731-134-alexander.levin@microsoft.com>
Date:   Mon, 19 Mar 2018 16:00:32 +0000
From:   Sasha Levin <Alexander.Levin@...rosoft.com>
To:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "stable@...r.kernel.org" <stable@...r.kernel.org>
CC:     Pardha Saradhi K <pardha.saradhi.kesapragada@...el.com>,
        Sanyog Kale <sanyog.r.kale@...el.com>,
        Guneshwor Singh <guneshwor.o.singh@...el.com>,
        Mark Brown <broonie@...nel.org>,
        Sasha Levin <Alexander.Levin@...rosoft.com>
Subject: [PATCH AUTOSEL for 4.9 134/281] ASoC: Intel: Skylake: Disable clock
 gating during firmware and library download

From: Pardha Saradhi K <pardha.saradhi.kesapragada@...el.com>

[ Upstream commit d5cc0a1fcbb5ddbef9fdd4c4a978da3254ddbf37 ]

During firmware and library download, sometimes it is observed that
firmware and library download is timed-out resulting into probe failure.

This patch disables dynamic clock gating while firmware and library
download.

Signed-off-by: Pardha Saradhi K <pardha.saradhi.kesapragada@...el.com>
Signed-off-by: Sanyog Kale <sanyog.r.kale@...el.com>
Signed-off-by: Guneshwor Singh <guneshwor.o.singh@...el.com>
Acked-By: Vinod Koul <vinod.koul@...el.com>
Signed-off-by: Mark Brown <broonie@...nel.org>
Signed-off-by: Sasha Levin <alexander.levin@...rosoft.com>
---
 sound/soc/intel/skylake/skl-messages.c | 4 ++++
 sound/soc/intel/skylake/skl-pcm.c      | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/sound/soc/intel/skylake/skl-messages.c b/sound/soc/intel/skylake/skl-messages.c
index 805b7f2173f3..78472c908ae9 100644
--- a/sound/soc/intel/skylake/skl-messages.c
+++ b/sound/soc/intel/skylake/skl-messages.c
@@ -331,7 +331,11 @@ int skl_resume_dsp(struct skl *skl)
 	if (skl->skl_sst->is_first_boot == true)
 		return 0;
 
+	/* disable dynamic clock gating during fw and lib download */
+	ctx->enable_miscbdcge(ctx->dev, false);
+
 	ret = skl_dsp_wake(ctx->dsp);
+	ctx->enable_miscbdcge(ctx->dev, true);
 	if (ret < 0)
 		return ret;
 
diff --git a/sound/soc/intel/skylake/skl-pcm.c b/sound/soc/intel/skylake/skl-pcm.c
index 58c728662600..2fd213cd9a40 100644
--- a/sound/soc/intel/skylake/skl-pcm.c
+++ b/sound/soc/intel/skylake/skl-pcm.c
@@ -1191,7 +1191,11 @@ static int skl_platform_soc_probe(struct snd_soc_platform *platform)
 			return -EIO;
 		}
 
+		/* disable dynamic clock gating during fw and lib download */
+		skl->skl_sst->enable_miscbdcge(platform->dev, false);
+
 		ret = ops->init_fw(platform->dev, skl->skl_sst);
+		skl->skl_sst->enable_miscbdcge(platform->dev, true);
 		if (ret < 0) {
 			dev_err(platform->dev, "Failed to boot first fw: %d\n", ret);
 			return ret;
-- 
2.14.1