Patch "ASoC: Intel: Allow for ROM init retry on CNL platforms" has been added to the 5.4-stable tree

[gregkh at linuxfoundation.org]

This is a note to let you know that I've just added the patch titled

    ASoC: Intel: Allow for ROM init retry on CNL platforms

to the 5.4-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     asoc-intel-allow-for-rom-init-retry-on-cnl-platforms.patch
and it can be found in the queue-5.4 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable at vger.kernel.org> know about it.


>From foo at baz Tue Dec  1 09:41:56 AM CET 2020
From: Cezary Rojewski <cezary.rojewski at intel.com>
Date: Sun, 29 Nov 2020 12:41:45 +0100
Subject: ASoC: Intel: Allow for ROM init retry on CNL platforms
To: stable at vger.kernel.org, linux-kernel at vger.kernel.org
Cc: alsa-devel at alsa-project.org, broonie at kernel.org, tiwai at suse.com, pierre-louis.bossart at linux.intel.com, mateusz.gorski at linux.intel.com, Cezary Rojewski <cezary.rojewski at intel.com>
Message-ID: <20201129114148.13772-6-cezary.rojewski at intel.com>

From: Cezary Rojewski <cezary.rojewski at intel.com>

commit 024aa45f55ccd40704cfdef61b2a8b6d0de9cdd1 upstream.

Due to unconditional initial timeouts, firmware may fail to load during
its initialization. This issue cannot be resolved on driver side as it
is caused by external sources such as CSME but has to be accounted for
nonetheless.

Fixes: cb6a55284629 ("ASoC: Intel: cnl: Add sst library functions for cnl platform")
Signed-off-by: Cezary Rojewski <cezary.rojewski at intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart at linux.intel.com>
Link: https://lore.kernel.org/r/20200305145314.32579-7-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie at kernel.org>
Cc: <stable at vger.kernel.org> # 5.4.x
Signed-off-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
---
 sound/soc/intel/skylake/bxt-sst.c     |    2 --
 sound/soc/intel/skylake/cnl-sst.c     |   15 ++++++++++-----
 sound/soc/intel/skylake/skl-sst-dsp.h |    1 +
 3 files changed, 11 insertions(+), 7 deletions(-)

--- a/sound/soc/intel/skylake/bxt-sst.c
+++ b/sound/soc/intel/skylake/bxt-sst.c
@@ -38,8 +38,6 @@
 /* Delay before scheduling D0i3 entry */
 #define BXT_D0I3_DELAY 5000
 
-#define BXT_FW_ROM_INIT_RETRY 3
-
 static unsigned int bxt_get_errorcode(struct sst_dsp *ctx)
 {
 	 return sst_dsp_shim_read(ctx, BXT_ADSP_ERROR_CODE);
--- a/sound/soc/intel/skylake/cnl-sst.c
+++ b/sound/soc/intel/skylake/cnl-sst.c
@@ -109,7 +109,7 @@ static int cnl_load_base_firmware(struct
 {
 	struct firmware stripped_fw;
 	struct skl_dev *cnl = ctx->thread_context;
-	int ret;
+	int ret, i;
 
 	if (!ctx->fw) {
 		ret = request_firmware(&ctx->fw, ctx->fw_name, ctx->dev);
@@ -131,12 +131,16 @@ static int cnl_load_base_firmware(struct
 	stripped_fw.size = ctx->fw->size;
 	skl_dsp_strip_extended_manifest(&stripped_fw);
 
-	ret = cnl_prepare_fw(ctx, stripped_fw.data, stripped_fw.size);
-	if (ret < 0) {
-		dev_err(ctx->dev, "prepare firmware failed: %d\n", ret);
-		goto cnl_load_base_firmware_failed;
+	for (i = 0; i < BXT_FW_ROM_INIT_RETRY; i++) {
+		ret = cnl_prepare_fw(ctx, stripped_fw.data, stripped_fw.size);
+		if (!ret)
+			break;
+		dev_dbg(ctx->dev, "prepare firmware failed: %d\n", ret);
 	}
 
+	if (ret < 0)
+		goto cnl_load_base_firmware_failed;
+
 	ret = sst_transfer_fw_host_dma(ctx);
 	if (ret < 0) {
 		dev_err(ctx->dev, "transfer firmware failed: %d\n", ret);
@@ -158,6 +162,7 @@ static int cnl_load_base_firmware(struct
 	return 0;
 
 cnl_load_base_firmware_failed:
+	dev_err(ctx->dev, "firmware load failed: %d\n", ret);
 	release_firmware(ctx->fw);
 	ctx->fw = NULL;
 
--- a/sound/soc/intel/skylake/skl-sst-dsp.h
+++ b/sound/soc/intel/skylake/skl-sst-dsp.h
@@ -67,6 +67,7 @@ struct skl_dev;
 
 #define SKL_FW_INIT			0x1
 #define SKL_FW_RFW_START		0xf
+#define BXT_FW_ROM_INIT_RETRY		3
 
 #define SKL_ADSPIC_IPC			1
 #define SKL_ADSPIS_IPC			1


Patches currently in stable-queue which might be from cezary.rojewski at intel.com are

queue-5.4/asoc-intel-skylake-select-hda-configuration-permissively.patch
queue-5.4/asoc-intel-skylake-enable-codec-wakeup-during-chip-init.patch
queue-5.4/asoc-intel-allow-for-rom-init-retry-on-cnl-platforms.patch
queue-5.4/asoc-intel-skylake-await-purge-request-ack-on-cnl.patch
queue-5.4/asoc-intel-skylake-remove-superfluous-chip-initialization.patch
queue-5.4/asoc-intel-skylake-shield-against-no-nhlt-configurations.patch
queue-5.4/asoc-intel-multiple-i-o-pcm-format-support-for-pipe.patch
queue-5.4/asoc-intel-skylake-automatic-dmic-format-configuration-according-to-information-from-nhlt.patch