Transfer data from server to client via Rpc_in_buf troubles

[Nikolay Golikov]

Hi all,

Now I working on i2c driver for i.mx53 platform. In i2c_session interface I
using Rpc_in_buf for transfer data between driver and client:

        enum { MAX_BUFFER_SIZE = 256 };
        typedef Genode::Rpc_in_buffer<MAX_BUFFER_SIZE> Byte_array;


        virtual bool read(Genode::uint8_t address, Genode::uint8_t register,
                          Byte_array &out) = 0;

        virtual bool write(Genode::uint8_t address, Genode::uint8_t
register,
                           Byte_array const &in) = 0;

        GENODE_RPC(Rpc_read, bool, read,
                   Genode::uint8_t, Genode::uint8_t, Byte_array &);
        GENODE_RPC(Rpc_write, bool, write,
                   Genode::uint8_t, Genode::uint8_t, Byte_array const &);

Write function transfer data to driver normally, but after read rpc call on
client side the buffer content does not change.
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