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 This email and any attachments thereto may contain private, confidential, and privileged material for the sole use of the intended recipient. Any review, copying, or distribution of this email (or any attachments thereto) by others is strictly prohibited. If you are not the intended recipient, please contact the sender immediately and permanently delete the original and any copies of this email and any attachments thereto. 此电子邮件及附件所包含内容具有机密性,且仅限于接收人使用。未经允许,禁止第三人阅读、复制或传播该电子邮件中的任何信息。如果您不属于以上电子邮件的目标接收者,请您立即通知发送人并删除原电子邮件及其相关的附件。