From: Aidan Thornton <makosoft@gmail.com>
Date: Sat, 22 Oct 2016 21:02:26 +0000 (+0100)
Subject: USB: serial: ch341: add debug output for chip version
X-Git-Tag: v4.10-rc1~150^2~21^2~5
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a98b69002a1656f1d50e24d6c189a66a5f55f783;p=karo-tx-linux.git

USB: serial: ch341: add debug output for chip version

Will probably be helpful if there are any more compatibility issues.

Signed-off-by: Aidan Thornton <makosoft@gmail.com>
Reviewed-by: Grigori Goronzy <greg@chown.ath.cx>
Signed-off-by: Johan Hovold <johan@kernel.org>
---

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index af9edbedfd28..2597b83a8ae2 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -212,6 +212,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
 	r = ch341_control_in(dev, CH341_REQ_READ_VERSION, 0, 0, buffer, size);
 	if (r < 0)
 		goto out;
+	dev_dbg(&dev->dev, "Chip version: 0x%02x\n", buffer[0]);
 
 	r = ch341_control_out(dev, CH341_REQ_SERIAL_INIT, 0, 0);
 	if (r < 0)