layerscape: add patches-5.4

Add patches for linux-5.4. The patches are from NXP LSDK-20.04 release
which was tagged LSDK-20.04-V5.4.
https://source.codeaurora.org/external/qoriq/qoriq-components/linux/

For boards LS1021A-IOT, and Traverse-LS1043 which are not involved in
LSDK, port the dts patches from 4.14.

The patches are sorted into the following categories:
  301-arch-xxxx
  302-dts-xxxx
  303-core-xxxx
  701-net-xxxx
  801-audio-xxxx
  802-can-xxxx
  803-clock-xxxx
  804-crypto-xxxx
  805-display-xxxx
  806-dma-xxxx
  807-gpio-xxxx
  808-i2c-xxxx
  809-jailhouse-xxxx
  810-keys-xxxx
  811-kvm-xxxx
  812-pcie-xxxx
  813-pm-xxxx
  814-qe-xxxx
  815-sata-xxxx
  816-sdhc-xxxx
  817-spi-xxxx
  818-thermal-xxxx
  819-uart-xxxx
  820-usb-xxxx
  821-vfio-xxxx

Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>

1 files changed, 65 insertions, 0 deletions

diff --git a/target/linux/layerscape/patches-5.4/806-dma-0011-MLK-16482-dma-fsl-edma-v3-Fix-RCU-issue-while-playin.patch b/target/linux/layerscape/patches-5.4/806-dma-0011-MLK-16482-dma-fsl-edma-v3-Fix-RCU-issue-while-playin.patch
new file mode 100644
index 0000000000..de37310dd0
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/806-dma-0011-MLK-16482-dma-fsl-edma-v3-Fix-RCU-issue-while-playin.patch
@@ -0,0 +1,65 @@
+From 46c343673c6eae7909f644f9b67101ce14309670 Mon Sep 17 00:00:00 2001
+From: Robin Gong <yibin.gong@nxp.com>
+Date: Tue, 19 Sep 2017 11:36:58 +0800
+Subject: [PATCH] MLK-16482: dma: fsl-edma-v3: Fix RCU issue while playing
+ Audio
+
+That's caused by commit 593034f1b908 ("MLK-16437: dma: fsl-edma-v3:
+fix kernel crash while edma interrupt trigger after channel disabled").
+Because fsl_chan->vchan.lock will be hold always and trigger RCU report
+as below:
+
+1571.3  Playing WAVE '/mnt/nfs/vte_mx82/../test_stream/esai_stream/48k16bit-six.wav' : Signed 16 bit Little Endian, Rate 48000 Hz, Channels 6
+1571.5  [ 4642.698771] INFO: rcu_preempt detected stalls on CPUs/tasks:
+1571.6  [ 4642.704443] 0-...: (1 GPs behind) idle=2c5/140000000000000/0 softirq=155373/155374 fqs=2541
+1571.7  [ 4642.712967] (detected by 2, t=5252 jiffies, g=104259, c=104258, q=22)
+1571.8  [ 4642.719501] Task dump for CPU 0:
+1571.9  [ 4642.722724] aplay R running task 0 15723 15721 0x00000202
+1571.10  [ 4642.729786] Call trace:
+1571.11  [ 4642.732239] [<ffff0000080855e4>] __switch_to+0x8c/0xa0
+1571.12  [ 4642.737379] [<ffff0000084e3a48>] dma_chan_put+0x70/0xa0
+1571.13  [ 4642.742603] [<ffff0000084e3aac>] dma_release_channel+0x34/0xa0
+1571.14  [ 4642.748435] [<ffff000008972240>] fsl_asrc_dma_hw_free+0x38/0x50
+1571.15  [ 4642.754358] [<ffff000008960568>] soc_pcm_hw_free+0x110/0x1a8
+1571.16  [ 4642.760013] [<ffff000008963bcc>] dpcm_fe_dai_hw_free+0x6c/0xe0
+1571.17  [ 4642.765844] [<ffff000008948ae8>] snd_pcm_common_ioctl1+0xb40/0xce0
+1571.18  [ 4642.772028] [<ffff000008948e64>] snd_pcm_playback_ioctl1+0x1dc/0x310
+1571.19  [ 4642.778378] [<ffff000008948fc0>] snd_pcm_playback_ioctl+0x28/0x40
+1571.20  [ 4642.784470] [<ffff0000081ee0a4>] do_vfs_ioctl+0xa4/0x748
+1571.21  [ 4642.789784] [<ffff0000081ee7d4>] SyS_ioctl+0x8c/0xa0
+1571.22  [ 4642.794745] [<ffff000008082f4c>] __sys_trace_return+0x0/0x4
+1571.23  [ 4705.718740] INFO: rcu_preempt detected stalls on CPUs/tasks:
+1571.24  [ 4705.724420] 0-...: (1 GPs behind) idle=2c5/140000000000000/0 softirq=155373/155374 fqs=10407
+1571.25  [ 4705.733030] (detected by 1, t=21010 jiffies, g=104259, c=104258, q=119)
+
+Signed-off-by: Robin Gong <yibin.gong@nxp.com>
+Reported-by: Jason Liu <jason.hui.liu@nxp.com>
+Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
+Fixes: 593034f1b908 ("MLK-16437: dma: fsl-edma-v3: fix kernel crash
+while edma interrupt trigger after channel disabled").
+
+(cherry picked from commit e62e8707154f47e168fcfd148e97be4e2f991898)
+---
+ drivers/dma/fsl-edma-v3.c | 4 ++--
+ 1 file changed, 2 insertions(+), 2 deletions(-)
+
+--- a/drivers/dma/fsl-edma-v3.c
++++ b/drivers/dma/fsl-edma-v3.c
+@@ -692,7 +692,7 @@ static irqreturn_t fsl_edma3_tx_handler(
+ 
+ 	/* Ignore this interrupt since channel has been disabled already */
+ 	if (!fsl_chan->edesc)
+-		return IRQ_HANDLED;
++		goto irq_handled;
+ 
+ 	if (!fsl_chan->edesc->iscyclic) {
+ 		fsl_edma3_get_realcnt(fsl_chan);
+@@ -706,7 +706,7 @@ static irqreturn_t fsl_edma3_tx_handler(
+ 
+ 	if (!fsl_chan->edesc)
+ 		fsl_edma3_xfer_desc(fsl_chan);
+-
++irq_handled:
+ 	spin_unlock(&fsl_chan->vchan.lock);
+ 
+ 	return IRQ_HANDLED;