1 files changed, 19 insertions, 5 deletions

diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c
index 00b47ea24f86..0a69c0977e3f 100644
--- a/drivers/usb/class/cdc-acm.c
+++ b/drivers/usb/class/cdc-acm.c
@@ -546,10 +546,6 @@ static int acm_tty_open(struct tty_struct *tty, struct file *filp)
         tty->driver_data = acm;
         acm->tty = tty;
 
-        /* force low_latency on so that our tty_push actually forces the data through,
-           otherwise it is scheduled, and with high data rates data can get lost. */
-        tty->low_latency = 1;
-
         if (usb_autopm_get_interface(acm->control) < 0)
                 goto early_bail;
         else
@@ -1349,12 +1345,18 @@ static struct usb_device_id acm_ids[] = {
         { USB_DEVICE(0x0e8d, 0x0003), /* FIREFLY, MediaTek Inc; andrey.arapov@gmail.com */
         .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
         },
+        { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */
+        .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
+        },
         { USB_DEVICE(0x0482, 0x0203), /* KYOCERA AH-K3001V */
         .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
         },
         { USB_DEVICE(0x079b, 0x000f), /* BT On-Air USB MODEM */
         .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
         },
+        { USB_DEVICE(0x0ace, 0x1602), /* ZyDAS 56K USB MODEM */
+        .driver_info = SINGLE_RX_URB,
+        },
         { USB_DEVICE(0x0ace, 0x1608), /* ZyDAS 56K USB MODEM */
         .driver_info = SINGLE_RX_URB, /* firmware bug */
         },
@@ -1370,6 +1372,18 @@ static struct usb_device_id acm_ids[] = {
         { USB_DEVICE(0x0572, 0x1321), /* Conexant USB MODEM CX93010 */
         .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
         },
+        { USB_DEVICE(0x0572, 0x1324), /* Conexant USB MODEM RD02-D400 */
+        .driver_info = NO_UNION_NORMAL, /* has no union descriptor */
+        },
+        { USB_DEVICE(0x22b8, 0x6425), /* Motorola MOTOMAGX phones */
+        },
+        { USB_DEVICE(0x0572, 0x1329), /* Hummingbird huc56s (Conexant) */
+        .driver_info = NO_UNION_NORMAL, /* union descriptor misplaced on
+                                           data interface instead of
+                                           communications interface.
+                                           Maybe we should define a new
+                                           quirk for this. */
+        },
 
         /* control interfaces with various AT-command sets */
         { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM,
@@ -1478,4 +1492,4 @@ module_exit(acm_exit);
 MODULE_AUTHOR( DRIVER_AUTHOR );
 MODULE_DESCRIPTION( DRIVER_DESC );
 MODULE_LICENSE("GPL");
-
+MODULE_ALIAS_CHARDEV_MAJOR(ACM_TTY_MAJOR);