add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/bluetooth/hci_nokia.c
..
..
@@ -734,7 +734,11 @@
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 		return err;
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 	}
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-	clk_prepare_enable(sysclk);
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+	err = clk_prepare_enable(sysclk);
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+	if (err) {
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+		dev_err(dev, "could not enable sysclk: %d", err);
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+		return err;
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+	}
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 	btdev->sysclk_speed = clk_get_rate(sysclk);
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 	clk_disable_unprepare(sysclk);
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