Hi all,<div><br></div><div>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:</div><div><br></div><div><div>        enum { MAX_BUFFER_SIZE = 256 };</div>
<div>        typedef Genode::Rpc_in_buffer&lt;MAX_BUFFER_SIZE&gt; Byte_array;</div></div><div><br></div><div><br></div><div><div>        virtual bool read(Genode::uint8_t address, Genode::uint8_t register,</div><div>                          Byte_array &amp;out) = 0;</div>
<div><br></div><div>        virtual bool write(Genode::uint8_t address, Genode::uint8_t register,</div><div>                           Byte_array const &amp;in) = 0;</div><div><br></div><div>        GENODE_RPC(Rpc_read, bool, read,<br>
</div><div>                   Genode::uint8_t, Genode::uint8_t, Byte_array &amp;);</div><div>        GENODE_RPC(Rpc_write, bool, write,</div><div>                   Genode::uint8_t, Genode::uint8_t, Byte_array const &amp;);</div>
</div><div><br></div><div>Write function transfer data to driver normally, but after read rpc call on client side the buffer content does not change. </div>