bcm27xx: add linux 5.4 support

Tested on bcm2710 (Raspberry Pi 3B).

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.4/950-0024-sound-Demote-deferral-errors-to-INFO-level.patch b/target/linux/bcm27xx/patches-5.4/950-0024-sound-Demote-deferral-errors-to-INFO-level.patch
new file mode 100644
index 0000000000..b6cf45fdc8
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.4/950-0024-sound-Demote-deferral-errors-to-INFO-level.patch
@@ -0,0 +1,35 @@
+From afabe0abad549625f731baa088c21965a970ffa7 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 9 Feb 2017 14:36:44 +0000
+Subject: [PATCH] sound: Demote deferral errors to INFO level
+
+At present there is no mechanism to specify driver load order,
+which can lead to deferrals and repeated retries until successful.
+Since this situation is expected, reduce the dmesg level to
+INFO and mention that the operation will be retried.
+
+Signed-off-by: Phil Elwell <phil@raspberrypi.org>
+---
+ sound/soc/soc-core.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/sound/soc/soc-core.c
++++ b/sound/soc/soc-core.c
+@@ -898,7 +898,7 @@ static int soc_bind_dai_link(struct snd_
+ 	/* FIXME: we need multi CPU support in the future */
+ 	rtd->cpu_dai = snd_soc_find_dai(dai_link->cpus);
+ 	if (!rtd->cpu_dai) {
+-		dev_info(card->dev, "ASoC: CPU DAI %s not registered\n",
++		dev_info(card->dev, "ASoC: CPU DAI %s not registered - will retry\n",
+ 			 dai_link->cpus->dai_name);
+ 		goto _err_defer;
+ 	}
+@@ -909,7 +909,7 @@ static int soc_bind_dai_link(struct snd_
+ 	for_each_link_codecs(dai_link, i, codec) {
+ 		rtd->codec_dais[i] = snd_soc_find_dai(codec);
+ 		if (!rtd->codec_dais[i]) {
+-			dev_info(card->dev, "ASoC: CODEC DAI %s not registered\n",
++			dev_info(card->dev, "ASoC: CODEC DAI %s not registered - will retry\n",
+ 				 codec->dai_name);
+ 			goto _err_defer;
+ 		}