USB: CP2101 Reduce Error Logging (97324955) · Commits · 戴 / test

drivers/usb/serial/cp2101.c

+7 −12

Original line number	Diff line number	Diff line
		@@ -11,10 +11,6 @@
		* thanks to Karl Hiramoto karl@hiramoto.org. RTSCTS hardware flow
		* control thanks to Munir Nassar nassarmu@real-time.com
		*
		* Outstanding Issues:
		* Buffers are not flushed when the port is opened.
		* Multiple calls to write() may fail with "Resource temporarily unavailable"
		*
		*/

		#include <linux/kernel.h>
		@@ -225,7 +221,7 @@ static int cp2101_get_config(struct usb_serial_port *port, u8 request,
		kfree(buf);

		if (result != size) {
		dev_err(&port->dev, "%s - Unable to send config request, "
		dbg("%s - Unable to send config request, "
		"request=0x%x size=%d result=%d\n",
		__func__, request, size, result);
		return -EPROTO;
		@@ -276,7 +272,7 @@ static int cp2101_set_config(struct usb_serial_port *port, u8 request,
		kfree(buf);

		if ((size > 2 && result != size) \|\| result < 0) {
		dev_err(&port->dev, "%s - Unable to send request, "
		dbg("%s - Unable to send request, "
		"request=0x%x size=%d result=%d\n",
		__func__, request, size, result);
		return -EPROTO;
		@@ -566,8 +562,7 @@ static void cp2101_set_termios(struct tty_struct *tty,
		baud);
		if (cp2101_set_config_single(port, CP2101_BAUDRATE,
		((BAUD_RATE_GEN_FREQ + baud/2) / baud))) {
		dev_err(&port->dev, "Baud rate requested not "
		"supported by device\n");
		dbg("Baud rate requested not supported by device\n");
		baud = tty_termios_baud_rate(old_termios);
		}
		}
		@@ -600,14 +595,14 @@ static void cp2101_set_termios(struct tty_struct *tty,
		dbg("%s - data bits = 9", __func__);
		break;*/
		default:
		dev_err(&port->dev, "cp2101 driver does not "
		dbg("cp2101 driver does not "
		"support the number of bits requested,"
		" using 8 bit mode\n");
		bits \|= BITS_DATA_8;
		break;
		}
		if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
		dev_err(&port->dev, "Number of data bits requested "
		dbg("Number of data bits requested "
		"not supported by device\n");
		}

		@@ -624,7 +619,7 @@ static void cp2101_set_termios(struct tty_struct *tty,
		}
		}
		if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
		dev_err(&port->dev, "Parity mode not supported "
		dbg("Parity mode not supported "
		"by device\n");
		}

		@@ -639,7 +634,7 @@ static void cp2101_set_termios(struct tty_struct *tty,
		dbg("%s - stop bits = 1", __func__);
		}
		if (cp2101_set_config(port, CP2101_BITS, &bits, 2))
		dev_err(&port->dev, "Number of stop bits requested "
		dbg("Number of stop bits requested "
		"not supported by device\n");
		}

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