修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/drivers/usb/musb/ux500_dma.c
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@@ -310,9 +310,9 @@
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 			dma_channel->max_len = SZ_16M;
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 			ux500_channel->dma_chan =
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-				dma_request_slave_channel(dev, chan_names[ch_num]);
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+				dma_request_chan(dev, chan_names[ch_num]);
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-			if (!ux500_channel->dma_chan)
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+			if (IS_ERR(ux500_channel->dma_chan))
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 				ux500_channel->dma_chan =
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 					dma_request_channel(mask,
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 							    data ?