diff options
| -rw-r--r-- | drivers/atmodem/gprs-context.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/drivers/atmodem/gprs-context.c b/drivers/atmodem/gprs-context.c index c5dabf24..cf80d5bf 100644 --- a/drivers/atmodem/gprs-context.c +++ b/drivers/atmodem/gprs-context.c @@ -241,6 +241,27 @@ static void at_gprs_activate_primary(struct ofono_gprs_context *gc, gcd->state = STATE_ENABLING; + if (gcd->vendor == OFONO_VENDOR_ZTE) { + GAtChat *chat = g_at_chat_get_slave(gcd->chat); + + /* + * The modem port of ZTE devices with certain firmware + * versions ends up getting suspended. It will no longer + * signal POLLOUT and becomes pretty unresponsive. + * + * To wake up the modem port, the only reliable method + * found so far is AT+ZOPRT power mode command. It is + * enough to ask for the current mode and the modem + * port wakes up and accepts commands again. + * + * And since the modem port is suspended, this command + * needs to be send on the control port of course. + * + */ + g_at_chat_send(chat, "AT+ZOPRT?", none_prefix, + NULL, NULL, NULL); + } + len = snprintf(buf, sizeof(buf), "AT+CGDCONT=%u,\"IP\"", ctx->cid); if (ctx->apn) |