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Rev 4400 Rev 4401
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    com_area = mmap(NULL, com_size, PROTO_READ | PROTO_WRITE,
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    com_area = mmap(NULL, com_size, PROTO_READ | PROTO_WRITE,
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        MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
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        MAP_ANONYMOUS | MAP_PRIVATE, 0, 0);
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    if (!com_area) {
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    if (!com_area) {
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        return ENOMEM;
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        return ENOMEM;
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    }
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    }
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    dev_phone = ipc_connect_me_to_blocking(PHONE_NS, SERVICE_DEVMAP,
 - 
 
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        DEVMAP_CONNECT_TO_DEVICE, dev_handle);
 - 
 
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- 
 
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    dev_phone = devmap_device_connect(dev_handle, IPC_FLAG_BLOCKING);
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    if (dev_phone < 0) {
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    if (dev_phone < 0) {
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        munmap(com_area, com_size);
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        munmap(com_area, com_size);
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        return dev_phone;
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        return dev_phone;
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    }
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    }
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