From: Michael Ulbricht <michael.ulbri...@systec-electronic.com>

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

===============

commit 895d240d1db0b2736d779200788e4c4aea28a0c6 upstream.

By specifying NO_UNION_NORMAL the ACM driver does only use the first two
USB interfaces (modem data & control). The AT Port, Diagnostic and NMEA
interfaces are left to the USB serial driver.

Signed-off-by: Michael Ulbricht <michael.ulbri...@systec-electronic.com>
Signed-off-by: Alexander Stein <alexander.st...@systec-electronic.com>
Signed-off-by: Oliver Neukum <oli...@neukum.org>
Signed-off-by: Jiri Slaby <jsl...@suse.cz>
---
 drivers/usb/class/cdc-acm.c | 28 +++++++++++++++++++++-------
 1 file changed, 21 insertions(+), 7 deletions(-)

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index e8404319ca68..0b5e381bcbe6 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -1560,13 +1560,27 @@ static const struct usb_device_id acm_ids[] = {
        },
        /* Motorola H24 HSPA module: */
        { USB_DEVICE(0x22b8, 0x2d91) }, /* modem                                
*/
-       { USB_DEVICE(0x22b8, 0x2d92) }, /* modem           + diagnostics        
*/
-       { USB_DEVICE(0x22b8, 0x2d93) }, /* modem + AT port                      
*/
-       { USB_DEVICE(0x22b8, 0x2d95) }, /* modem + AT port + diagnostics        
*/
-       { USB_DEVICE(0x22b8, 0x2d96) }, /* modem                         + NMEA 
*/
-       { USB_DEVICE(0x22b8, 0x2d97) }, /* modem           + diagnostics + NMEA 
*/
-       { USB_DEVICE(0x22b8, 0x2d99) }, /* modem + AT port               + NMEA 
*/
-       { USB_DEVICE(0x22b8, 0x2d9a) }, /* modem + AT port + diagnostics + NMEA 
*/
+       { USB_DEVICE(0x22b8, 0x2d92),   /* modem           + diagnostics        
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
+       { USB_DEVICE(0x22b8, 0x2d93),   /* modem + AT port                      
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
+       { USB_DEVICE(0x22b8, 0x2d95),   /* modem + AT port + diagnostics        
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
+       { USB_DEVICE(0x22b8, 0x2d96),   /* modem                         + NMEA 
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
+       { USB_DEVICE(0x22b8, 0x2d97),   /* modem           + diagnostics + NMEA 
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
+       { USB_DEVICE(0x22b8, 0x2d99),   /* modem + AT port               + NMEA 
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
+       { USB_DEVICE(0x22b8, 0x2d9a),   /* modem + AT port + diagnostics + NMEA 
*/
+       .driver_info = NO_UNION_NORMAL, /* handle only modem interface          
*/
+       },
 
        { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
        .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
-- 
1.9.3

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