eMMC partition switch status checking

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Dear mmc experts

I have a question about mmc partition switch. Emmc driver use cmd6 + R1B response to do partition switch,
after cmd is sent, it waits DATA_END interrupt if R1B is set and no data transfer in the cmd, after cmd is completed,
emmc driver still polls the busy status, why need this operation? As I know, emmc controller only receives DATA_END
interrupt after busy status is cleared.

Please help to explain the reason, thanks very much!


Thanks
Xiaoguang
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