dmaengine: hsu: correct use of channel status register

[firefly-linux-kernel-4.4.55.git] / drivers / dma / hsu / hsu.c

diff --git a/drivers/dma/hsu/hsu.c b/drivers/dma/hsu/hsu.c
index 823ad728aecff9b0e2b9810a6aad297bb1bb7d54..efc02b98e6bafe6bc802a530c2e2d508f12dd86d 100644 (file)
--- a/drivers/dma/hsu/hsu.c
+++ b/drivers/dma/hsu/hsu.c
@@ -135,7 +135,7 @@ static u32 hsu_dma_chan_get_sr(struct hsu_dma_chan *hsuc)
        sr = hsu_chan_readl(hsuc, HSU_CH_SR);
        spin_unlock_irqrestore(&hsuc->vchan.lock, flags);
 
-       return sr;
+       return sr & ~(HSU_CH_SR_DESCE_ANY | HSU_CH_SR_CDESC_ANY);
 }
 
 irqreturn_t hsu_dma_irq(struct hsu_dma_chip *chip, unsigned short nr)