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

[<gregkh@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@vger.kernel.org> know about it.


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

From: Cezary Rojewski <cezary.rojewski@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@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/r/20200305145314.32579-7-cezary.rojewski@intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Cc: <stable@vger.kernel.org> # 5.4.x
Signed-off-by: Greg Kroah-Hartman <gregkh@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@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