linux-kernel - [108/114] USB: ftdi_sio: fix endianess of max packet size

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Message-Id: <20100824224510.685733969@clark.site>
Date:	Tue, 24 Aug 2010 15:45:53 -0700
From:	Greg KH <gregkh@...e.de>
To:	linux-kernel@...r.kernel.org, stable@...nel.org
Cc:	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	Michael Wileczka <mikewileczka@...oo.com>
Subject: [108/114] USB: ftdi_sio: fix endianess of max packet size

2.6.35-stable review patch.  If anyone has any objections, please let us know.

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

From: Michael Wileczka <mikewileczka@...oo.com>

commit d1ab903d2552b2362339b19203c7f01c797cb316 upstream.

The USB max packet size (always little-endian) was not being byte
swapped on big-endian systems.

Applicable since [USB: ftdi_sio: fix hi-speed device packet size calculation] approx 2.6.31

Signed-off-by: Michael Wileczka <mikewileczka@...oo.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>

---
 drivers/usb/serial/ftdi_sio.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -1376,7 +1376,7 @@ static void ftdi_set_max_packet_size(str
 	}
 
 	/* set max packet size based on descriptor */
-	priv->max_packet_size = ep_desc->wMaxPacketSize;
+	priv->max_packet_size = le16_to_cpu(ep_desc->wMaxPacketSize);
 
 	dev_info(&udev->dev, "Setting MaxPacketSize %d\n", priv->max_packet_size);
 }


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