This is a note to let you know that I've just added the patch titled

    NET: cdc-phonet, handle empty phonet header

to the 2.6.38-stable tree which can be found at:
    
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     net-cdc-phonet-handle-empty-phonet-header.patch
and it can be found in the queue-2.6.38 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.


From 468c3f924f043cad7a04f4f4d5224a2c9bc886c1 Mon Sep 17 00:00:00 2001
From: Jiri Slaby <[email protected]>
Date: Sun, 13 Mar 2011 06:54:31 +0000
Subject: NET: cdc-phonet, handle empty phonet header
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

From: Jiri Slaby <[email protected]>

commit 468c3f924f043cad7a04f4f4d5224a2c9bc886c1 upstream.

Currently, for N 5800 XM I get:
cdc_phonet: probe of 1-6:1.10 failed with error -22

It's because phonet_header is empty. Extra altsetting looks like
there:
E 05 24 00 01 10 03 24 ab 05 24 06 0a 0b 04 24 fd  .$....$..$....$.
E 00                                               .

I don't see the header used anywhere so just check if the phonet
descriptor is there, not the structure itself.

Signed-off-by: Jiri Slaby <[email protected]>
Cc: Rémi Denis-Courmont <[email protected]>
Cc: David S. Miller <[email protected]>
Acked-by: Rémi Denis-Courmont <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>

---
 drivers/net/usb/cdc-phonet.c |    9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

--- a/drivers/net/usb/cdc-phonet.c
+++ b/drivers/net/usb/cdc-phonet.c
@@ -328,13 +328,13 @@ int usbpn_probe(struct usb_interface *in
 {
        static const char ifname[] = "usbpn%d";
        const struct usb_cdc_union_desc *union_header = NULL;
-       const struct usb_cdc_header_desc *phonet_header = NULL;
        const struct usb_host_interface *data_desc;
        struct usb_interface *data_intf;
        struct usb_device *usbdev = interface_to_usbdev(intf);
        struct net_device *dev;
        struct usbpn_dev *pnd;
        u8 *data;
+       int phonet = 0;
        int len, err;
 
        data = intf->altsetting->extra;
@@ -355,10 +355,7 @@ int usbpn_probe(struct usb_interface *in
                                        (struct usb_cdc_union_desc *)data;
                                break;
                        case 0xAB:
-                               if (phonet_header || dlen < 5)
-                                       break;
-                               phonet_header =
-                                       (struct usb_cdc_header_desc *)data;
+                               phonet = 1;
                                break;
                        }
                }
@@ -366,7 +363,7 @@ int usbpn_probe(struct usb_interface *in
                len -= dlen;
        }
 
-       if (!union_header || !phonet_header)
+       if (!union_header || !phonet)
                return -EINVAL;
 
        data_intf = usb_ifnum_to_if(usbdev, union_header->bSlaveInterface0);


Patches currently in stable-queue which might be from [email protected] are

queue-2.6.38/net-cdc-phonet-handle-empty-phonet-header.patch

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