modify sin led gpio

hc

2024-05-13 9d77db3c730780c8ef5ccd4b66403ff5675cfe4e

 kernel/drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c
..
..
@@ -551,6 +551,11 @@
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 	/* The bad descriptor currently is in the head of vc list */
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 	vd = vchan_next_desc(&chan->vc);
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+	if (!vd) {
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+		dev_err(chan2dev(chan), "BUG: %s, IRQ with no descriptors\n",
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+			axi_chan_name(chan));
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+		goto out;
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+	}
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 	/* Remove the completed descriptor from issued list */
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 	list_del(&vd->node);
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..
..
@@ -565,6 +570,7 @@
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 	/* Try to restart the controller */
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 	axi_chan_start_first_queued(chan);
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+out:
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 	spin_unlock_irqrestore(&chan->vc.lock, flags);
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 }
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