From 79cd7c76a0274395ce5db44488fcea22dfeee6d3 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;
