(I post this again because this isn't attached to the mail thread) UFSHCI specifies Data Byte Count (DBC) like this: A '0' based value that indicates the length, in bytes, of the data block. A maximum of length of 256KB may exist for any entry. Bits 1:0 of this field shall be 11b to indicate Dword granularity. A value of '3' indicates 4 bytes, '7' indicates 8 bytes, etc. That means the size value should be aligned with 4. And as I know it's 18. Yes, its buffer is enough but if a host doesn't access memory with four-byte alignment, it could cause problems. Thanks. Kiwoong Kim
