add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/usb/core/sysfs.c
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@@ -889,11 +889,7 @@
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 	size_t srclen, n;
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 	int cfgno;
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 	void *src;
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-	int retval;
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-	retval = usb_lock_device_interruptible(udev);
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-	if (retval < 0)
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-		return -EINTR;
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 	/* The binary attribute begins with the device descriptor.
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 	 * Following that are the raw descriptor entries for all the
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 	 * configurations (config plus subsidiary descriptors).
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@@ -918,7 +914,6 @@
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 			off -= srclen;
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 		}
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 	}
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-	usb_unlock_device(udev);
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 	return count - nleft;
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 }
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