linux-kernel - [ 35/62] USB: serial: cp210x: Fixed usb_control

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Date:	Tue, 24 Apr 2012 15:33:16 -0700
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Yuri Matylitski <ym@...insoft.com>,
	"Kirill A. Shutemov" <kirill@...temov.name>
Subject: [ 35/62] USB: serial: cp210x: Fixed usb_control_msg timeout values

3.3-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Yuri Matylitski <ym@...insoft.com>

commit 2d5733fcd33dd451022d197cb6b476e970519ca7 upstream.

Fixed too small hardcoded timeout values for usb_control_msg
in driver for SiliconLabs cp210x-based usb-to-serial adapters.
Replaced with USB_CTRL_GET_TIMEOUT/USB_CTRL_SET_TIMEOUT.

Signed-off-by: Yuri Matylitski <ym@...insoft.com>
Acked-by: Kirill A. Shutemov <kirill@...temov.name>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/usb/serial/cp210x.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -285,7 +285,8 @@ static int cp210x_get_config(struct usb_
 	/* Issue the request, attempting to read 'size' bytes */
 	result = usb_control_msg(serial->dev, usb_rcvctrlpipe(serial->dev, 0),
 				request, REQTYPE_DEVICE_TO_HOST, 0x0000,
-				port_priv->bInterfaceNumber, buf, size, 300);
+				port_priv->bInterfaceNumber, buf, size,
+				USB_CTRL_GET_TIMEOUT);
 
 	/* Convert data into an array of integers */
 	for (i = 0; i < length; i++)
@@ -338,12 +339,14 @@ static int cp210x_set_config(struct usb_
 		result = usb_control_msg(serial->dev,
 				usb_sndctrlpipe(serial->dev, 0),
 				request, REQTYPE_HOST_TO_DEVICE, 0x0000,
-				port_priv->bInterfaceNumber, buf, size, 300);
+				port_priv->bInterfaceNumber, buf, size,
+				USB_CTRL_SET_TIMEOUT);
 	} else {
 		result = usb_control_msg(serial->dev,
 				usb_sndctrlpipe(serial->dev, 0),
 				request, REQTYPE_HOST_TO_DEVICE, data[0],
-				port_priv->bInterfaceNumber, NULL, 0, 300);
+				port_priv->bInterfaceNumber, NULL, 0,
+				USB_CTRL_SET_TIMEOUT);
 	}
 
 	kfree(buf);


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