[usb] how host deal with the non 4-byte boundery data packet?

["M Dennis" <mdennis97@hotmail.com>]

hi,all

Nominally,usb host read/write system memory in DWORD(4 byte)boundry.But the 
packets received from device are always not the multiple of 4 bytes.For a 
host controller,how to deal with this case.That's to say,if a device can 
only send a maximum packet size 201 bytes large,the host controller can 
write the former 200 bytes DWORD by DWORD,how to process the last byte?

Regards
Dennis





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