Hello, I am trying to compare the isp1760 from linux mainline vs the pehci driver from STErricson one thing stands out right away in the init functions the isp1760's kmem_init_once creates two kmem chace for struct isp1760_qtd and struct isp1760_qh which seems to be a common structure created by other HCD drivers. the pehci driver however, creates three kmem_cache for qtd, qh, and qha, all sizeof(isp1761_qha) Can someone please enlighten me to the different approaches being used here? Thank you for your time. - Richard Retanubun -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html