SdBusSubmitRequest Hangs

Hi,

I’m working on an SDIO functional driver on Windows XP SP 2.

I’m able to do all Get/Set property functions (SDRF_GET_PROPERTY), but when I try to read the CCCR or any other registers (even tuple information) using SDRF_DEVICE_COMMAND (Cmd52), the SdBusSubmitRequest API seems to hang. The API returns only when I plug out the card (with error code 0xC0000001)

When I check on the logic state analyzer, no commands are sent during SdBusSubmitRequest API for Cmd52.

I’ve already installed the hotfix for sdbus.sys, but still the behavior is the same.

Can you please provide some suggestions ?

Best Regards,
Naresh