Re: [PATCH] dmaengine: jz4780: Set max number of SGs per burst
From: Paul Cercueil <paul@crapouillou.net>
Date: 2021-08-30 09:49:07
Also in:
dmaengine, lkml
Hi, Le dim., août 29 2021 at 21:58:05 +0200, Artur Rojek [off-list ref] a écrit :
Total amount of SG list entries executed in a single burst is limited by the number of available DMA descriptors. This information is useful for device drivers utilizing this DMA engine. Signed-off-by: Artur Rojek <redacted>
Acked-by: Paul Cercueil <paul@crapouillou.net> Cheers, -Paul
quoted hunk ↗ jump to hunk
--- drivers/dma/dma-jz4780.c | 1 + 1 file changed, 1 insertion(+)diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c index ebee94dbd630..96701dedcac8 100644 --- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c@@ -915,6 +915,7 @@ static int jz4780_dma_probe(structplatform_device *pdev) dd->dst_addr_widths = JZ_DMA_BUSWIDTHS; dd->directions = BIT(DMA_DEV_TO_MEM) | BIT(DMA_MEM_TO_DEV); dd->residue_granularity = DMA_RESIDUE_GRANULARITY_BURST; + dd->max_sg_burst = JZ_DMA_MAX_DESC; /* * Enable DMA controller, mark all channels as not programmable. -- 2.33.0