This is a note to let you know that I've just added the patch titled ASoC: rsnd: fixup DMAEngine API to the 5.15-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-rsnd-fixup-dmaengine-api.patch and it can be found in the queue-5.15 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 2ce1b21cb3326e12af3c72c47e1d294b19d73947 Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> Date: Mon, 8 Nov 2021 13:22:55 +0900 Subject: ASoC: rsnd: fixup DMAEngine API From: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> commit 2ce1b21cb3326e12af3c72c47e1d294b19d73947 upstream. commit d5bb69dc54ec1 ("ASoC: sh: rcar: dma: : use proper DMAENGINE API for termination") updated DMAEngine API _all() to _sync(), but it should be _async(). _all() and _async() are almost same, the difference is only return error code. _sync() will call dmaengine_synchronize() and will be kernel panic. This patch is needed for v5.15 or later. [ 27.293264] BUG: scheduling while atomic: irq/130-ec70000/131/0x00000003 [ 27.300084] 2 locks held by irq/130-ec70000/131: [ 27.304743] #0: ffff0004c274d908 (&group->lock){....}-{2:2}, at: _snd_pcm_stream_lock_irqsave+0x48/0x54 [ 27.314344] #1: ffff0004c1788c60 (&priv->lock#2){....}-{2:2}, at: rsnd_soc_dai_trigger+0x70/0x7bc [ 27.323409] irq event stamp: 206 [ 27.326664] hardirqs last enabled at (205): [<ffff80001082de50>] _raw_spin_unlock_irq+0x50/0xa0 [ 27.335529] hardirqs last disabled at (206): [<ffff80001082d9e4>] _raw_spin_lock_irqsave+0xc4/0xd0 [ 27.344564] softirqs last enabled at (0): [<ffff800010037324>] copy_process+0x644/0x1b10 [ 27.352819] softirqs last disabled at (0): [<0000000000000000>] 0x0 [ 27.359142] CPU: 0 PID: 131 Comm: irq/130-ec70000 Not tainted 5.14.0-rc1+ #918 [ 27.366429] Hardware name: Renesas H3ULCB Kingfisher board based on r8a77950 (DT) [ 27.373975] Call trace: [ 27.376442] dump_backtrace+0x0/0x1b4 [ 27.380141] show_stack+0x24/0x30 [ 27.383488] dump_stack_lvl+0x8c/0xb8 [ 27.387184] dump_stack+0x18/0x34 [ 27.390528] __schedule_bug+0x8c/0x9c [ 27.394224] __schedule+0x790/0x8dc [ 27.397746] schedule+0x7c/0x110 [ 27.401003] synchronize_irq+0x94/0xd0 [ 27.404786] rcar_dmac_device_synchronize+0x20/0x2c [ 27.409710] rsnd_dmaen_stop+0x50/0x64 [ 27.413495] rsnd_soc_dai_trigger+0x554/0x7bc [ 27.417890] snd_soc_pcm_dai_trigger+0xe8/0x264 Cc: <stable@xxxxxxxxxx> Fixes: commit d5bb69dc54ec1 ("ASoC: sh: rcar: dma: : use proper DMAENGINE API for termination") Link: https://lore.kernel.org/r/TY2PR01MB3692889E1A7476C4322CC296D8AE9@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx Reported-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Acked-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@xxxxxxxxxxx> Link: https://lore.kernel.org/r/87mtmfz36o.wl-kuninori.morimoto.gx@xxxxxxxxxxx Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- sound/soc/sh/rcar/dma.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/sound/soc/sh/rcar/dma.c +++ b/sound/soc/sh/rcar/dma.c @@ -102,7 +102,7 @@ static int rsnd_dmaen_stop(struct rsnd_m struct rsnd_dmaen *dmaen = rsnd_dma_to_dmaen(dma); if (dmaen->chan) - dmaengine_terminate_sync(dmaen->chan); + dmaengine_terminate_async(dmaen->chan); return 0; } Patches currently in stable-queue which might be from kuninori.morimoto.gx@xxxxxxxxxxx are queue-5.15/asoc-rsnd-fixup-dmaengine-api.patch