target/linux/bcm27xx/patches-5.15/950-0331-bcm2835-dma-Avoid-losing-CS-flags-after-interrupt.patch

   1 From fa6d833fecd73b56de962f8538a2cd62bfca59ae Mon Sep 17 00:00:00 2001
   2 From: Dom Cobley <popcornmix@gmail.com>
   3 Date: Wed, 6 Jan 2021 18:16:10 +0000
   4 Subject: [PATCH] bcm2835-dma: Avoid losing CS flags after interrupt
   5
   6 Signed-off-by: Dom Cobley <popcornmix@gmail.com>
   7 ---
   8  drivers/dma/bcm2835-dma.c | 2 +-
   9  1 file changed, 1 insertion(+), 1 deletion(-)
  10
  11 --- a/drivers/dma/bcm2835-dma.c
  12 +++ b/drivers/dma/bcm2835-dma.c
  13 @@ -704,7 +704,7 @@ static irqreturn_t bcm2835_dma_callback(
  14          * if this IRQ handler is threaded.) If the channel is finished, it
  15          * will remain idle despite the ACTIVE flag being set.
  16          */
  17 -       writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE,
  18 +       writel(BCM2835_DMA_INT | BCM2835_DMA_ACTIVE | BCM2835_DMA_CS_FLAGS(c->dreq),
  19                c->chan_base + BCM2835_DMA_CS);
  20
  21         d = c->desc;