Thread (2 messages) 2 messages, 2 authors, 2019-12-11

[PATCH] dmaengine: dma-jz4780: Also break descriptor chains on JZ4725B

From: Paul Cercueil <paul@crapouillou.net>
Date: 2019-12-10 16:55:53
Also in: lkml, stable
Subsystem: dma generic offload engine subsystem, ingenic jz47xx socs, the rest · Maintainers: Vinod Koul, Paul Cercueil, Linus Torvalds

It turns out that the JZ4725B displays the same buggy behaviour as the
JZ4740 that was described in commit f4c255f1a747 ("dmaengine: dma-jz4780:
Break descriptor chains on JZ4740").

Work around it by using the same workaround previously used for the
JZ4740.

Fixes commit f4c255f1a747 ("dmaengine: dma-jz4780: Break descriptor
chains on JZ4740")

Cc: <redacted>
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
 drivers/dma/dma-jz4780.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index fa626acdc9b9..44af435628f8 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -999,7 +999,8 @@ static const struct jz4780_dma_soc_data jz4740_dma_soc_data = {
 static const struct jz4780_dma_soc_data jz4725b_dma_soc_data = {
 	.nb_channels = 6,
 	.transfer_ord_max = 5,
-	.flags = JZ_SOC_DATA_PER_CHAN_PM | JZ_SOC_DATA_NO_DCKES_DCKEC,
+	.flags = JZ_SOC_DATA_PER_CHAN_PM | JZ_SOC_DATA_NO_DCKES_DCKEC |
+		 JZ_SOC_DATA_BREAK_LINKS,
 };
 
 static const struct jz4780_dma_soc_data jz4770_dma_soc_data = {
-- 
2.24.0
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