linux-kernel - [PATCH v2 08/14] USB: ch341: add debug output for chip version

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Date:	Sat,  2 Apr 2016 19:07:17 +0200
From:	Grigori Goronzy <greg@...wn.ath.cx>
To:	Johan Hovold <johan@...nel.org>
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org,
	Grigori Goronzy <greg@...wn.ath.cx>
Subject: [PATCH v2 08/14] USB: ch341: add debug output for chip version

There are at least two hardware revisions, this may be helpful in
case compatibility issues need to be debugged.

Signed-off-by: Grigori Goronzy <greg@...wn.ath.cx>
---
 drivers/usb/serial/ch341.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/usb/serial/ch341.c b/drivers/usb/serial/ch341.c
index 4d66f0f..58309d1 100644
--- a/drivers/usb/serial/ch341.c
+++ b/drivers/usb/serial/ch341.c
@@ -211,6 +211,7 @@ static int ch341_configure(struct usb_device *dev, struct ch341_private *priv)
 	r = ch341_control_in(dev, CH341_VERSION, 0, 0, buffer, size);
 	if (r < 0)
 		goto out;
+	dev_dbg(&dev->dev, "chip version: %d\n", buffer[0]);
 
 	r = ch341_control_out(dev, CH341_SERIAL_INIT, 0, 0);
 	if (r < 0)
-- 
1.9.1