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From fa6d833fecd73b56de962f8538a2cd62bfca59ae Mon Sep 17 00:00:00 2001
From: Dom Cobley <popcornmix@gmail.com>
Date: Wed, 6 Jan 2021 18:16:10 +0000
Subject: [PATCH] bcm2835-dma: Avoid losing CS flags after interrupt
Signed-off-by: Dom Cobley <popcornmix@gmail.com>
---
drivers/dma/bcm2835-dma.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/dma/bcm2835-dma.c
+++ b/drivers/dma/bcm2835-dma.c
@@ -704,7 +704,7 @@ static irqreturn_t bcm2835_dma_callback(
* if this IRQ handler is threaded.) If the channel is finished, it
* will remain idle despite the ACTIVE flag being set.
*/
- writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE,
+ writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
c->chan_base + BCM2835_DMA_CS);
d = c->desc;
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