From 128fe7e9a0b99da1d7346528526bd424f705774b Mon Sep 17 00:00:00 2001 From: Jean-Francois Moine Date: Fri, 22 Apr 2016 08:14:33 +0200 Subject: [PATCH] dmaengine: sun6i: Fix the access of the IRQ register The IRQ register number is computed, but this number was not used and the register was the one indexed by the channel index instead. Then, only the first DMA channel was working. Acked-by: Maxime Ripard Signed-off-by: Jean-Francois Moine Signed-off-by: Vinod Koul --- drivers/dma/sun6i-dma.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/dma/sun6i-dma.c b/drivers/dma/sun6i-dma.c index 2db12e493c53..2ec320dc68b3 100644 --- a/drivers/dma/sun6i-dma.c +++ b/drivers/dma/sun6i-dma.c @@ -381,9 +381,9 @@ static int sun6i_dma_start_desc(struct sun6i_vchan *vchan) irq_reg = pchan->idx / DMA_IRQ_CHAN_NR; irq_offset = pchan->idx % DMA_IRQ_CHAN_NR; - irq_val = readl(sdev->base + DMA_IRQ_EN(irq_offset)); + irq_val = readl(sdev->base + DMA_IRQ_EN(irq_reg)); irq_val |= DMA_IRQ_QUEUE << (irq_offset * DMA_IRQ_CHAN_WIDTH); - writel(irq_val, sdev->base + DMA_IRQ_EN(irq_offset)); + writel(irq_val, sdev->base + DMA_IRQ_EN(irq_reg)); writel(pchan->desc->p_lli, pchan->base + DMA_CHAN_LLI_ADDR); writel(DMA_CHAN_ENABLE_START, pchan->base + DMA_CHAN_ENABLE); -- 2.34.1