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Rev 4581 Rev 4718
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    }
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    }
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    return phone;
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    return phone;
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}
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}
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int devmap_null_create(void)
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{
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    int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
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    if (phone < 0)
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        return -1;
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    ipcarg_t null_id;
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    int retval = async_req_0_1(phone, DEVMAP_DEVICE_NULL_CREATE, &null_id);
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    if (retval != EOK)
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        return -1;
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    return (int) null_id;
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}
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void devmap_null_destroy(int null_id)
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{
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    int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
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    if (phone < 0)
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        return;
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    async_req_1_0(phone, DEVMAP_DEVICE_NULL_DESTROY, (ipcarg_t) null_id);
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}
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ipcarg_t devmap_device_get_count(void)
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ipcarg_t devmap_device_get_count(void)
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{
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{
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    int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
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    int phone = devmap_get_phone(DEVMAP_CLIENT, IPC_FLAG_BLOCKING);
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    if (phone < 0)
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    if (phone < 0)