Hi All,
what is the relation between mmc_request , mmc_data and mmc_command .
(I am new SD driver development, and I am working on 2.6.22.1)
when mmc core layer calls Host controllers request function (member
of struct mmc_host_ops), it passes mmc_request structure to
driver's request function.
1)mmc_request has three members
mmc_command * cmd
mmc_data * data
mmc_command * stop
2) mmc_data has
mmc_command * stop
mmc_request * mrq
3) mmc_command has
mmc_data *data
mmc_request *mrq
Does mmc_requeest->stop is equal to mmc_request->data->stop ?
Does mmc_request is equal to mmc_request->data->mrq ?
Does mmc_request->data is equal to mmc_request->cmd->data ?
Does mmc_request is equal to mmc_request->cmd->mrq ?
I think Stop command which is part of mmc_request is used for sending
stop command after Multi Block write. is this correct. If stop command
fails(CRC fail, timeout), does this mean card write failed.
Thanks In Advance for your help
--
Thanks
raki
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