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| author | Otavio Salvador <otavio@ossystems.com.br> | 2019-03-28 10:47:24 -0300 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2019-03-28 10:47:24 -0300 |
| commit | 0a8ab17689e628c84a666195bfc6ab85d11cf057 (patch) | |
| tree | 01630dc4a6935df99bf7d11d34ff8d384fed86e2 /drivers/usb/class/cdc-acm.c | |
| parent | 1e71d8c630cbc0d1f5d762fd019690b5cdb880ae (diff) | |
| parent | 32aca03c2ce868d3412da0bb6ce6798c7bea357e (diff) | |
Merge pull request #46 from toradex/4.9-2.3.x-imx
4.9 2.3.x imx
Diffstat (limited to 'drivers/usb/class/cdc-acm.c')
| -rw-r--r-- | drivers/usb/class/cdc-acm.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/usb/class/cdc-acm.c b/drivers/usb/class/cdc-acm.c index cd4f96354fa8..8d4d46f3fd16 100644 --- a/drivers/usb/class/cdc-acm.c +++ b/drivers/usb/class/cdc-acm.c @@ -502,6 +502,13 @@ static int acm_tty_install(struct tty_driver *driver, struct tty_struct *tty) if (retval) goto error_init_termios; + /* + * Suppress initial echoing for some devices which might send data + * immediately after acm driver has been installed. + */ + if (acm->quirks & DISABLE_ECHO) + tty->termios.c_lflag &= ~ECHO; + tty->driver_data = acm; return 0; @@ -1620,6 +1627,9 @@ static const 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, 0x2000), /* MediaTek Inc Preloader */ + .driver_info = DISABLE_ECHO, /* DISABLE ECHO in termios flag */ + }, { USB_DEVICE(0x0e8d, 0x3329), /* MediaTek Inc GPS */ .driver_info = NO_UNION_NORMAL, /* has no union descriptor */ }, @@ -1818,6 +1828,13 @@ static const struct usb_device_id acm_ids[] = { .driver_info = IGNORE_DEVICE, }, + { USB_DEVICE(0x1bc7, 0x0021), /* Telit 3G ACM only composition */ + .driver_info = SEND_ZERO_PACKET, + }, + { USB_DEVICE(0x1bc7, 0x0023), /* Telit 3G ACM + ECM composition */ + .driver_info = SEND_ZERO_PACKET, + }, + /* control interfaces without any protocol set */ { USB_INTERFACE_INFO(USB_CLASS_COMM, USB_CDC_SUBCLASS_ACM, USB_CDC_PROTO_NONE) }, |