commit 429a1d2e9ea6ae8e13c9706d67a6e5567f806bf1
author Linus Walleij <linus.walleij@linaro.org> Sat Apr 08 22:16:50 2017 +0200
committer Linus Walleij <linus.walleij@linaro.org> Mon May 22 23:12:24 2023 +0200
tree 18df6c42ed7bfc27982bcbfa3ba4be169e0b7c34
parent 29885e93592782f92b5d795b94a24cfd148a0598

tc hangup fix

drivers/dma/amba-pl08x.c

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index eea8bd3..cd9635e 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
@@ -2284,7 +2284,7 @@ static void pl08x_ensure_on(struct pl08x_driver_data *pl08x)
 static irqreturn_t pl08x_irq(int irq, void *dev)
 {
 	struct pl08x_driver_data *pl08x = dev;
-	u32 mask = 0, err, tc, i;
+	u32 mask = 0, err, tc, i, val;
 
 	/* check & clear - ERR & TC interrupts */
 	err = readl(pl08x->base + PL080_ERR_STATUS);
@@ -2296,6 +2296,11 @@ static irqreturn_t pl08x_irq(int irq, void *dev)
 	tc = readl(pl08x->base + PL080_TC_STATUS);
 	if (tc)
 		writel(tc, pl08x->base + PL080_TC_CLEAR);
+	val = readl(pl08x->base + PL080_TC_STATUS);
+	if (val) {
+		dev_err(&pl08x->adev->dev, "%s TC didn\'t clear 0x%08x\n",
+			__func__, val);
+	}
 
 	if (!err && !tc)
 		return IRQ_NONE;