Hi, Alan Stern wrote: > On Tue, 11 Apr 2006, Andre' Draszik wrote: > > (1) You shouldn't need to change a class-based device driver such as > usb-storage to work with your special host controller. Besides, > if you need to change one then you need to change them all, and > that hardly seems practical. Better to change your driver to > make it work with all the existing code.
Changing usb-storage was easy and worked because buffers are always a multiple of 4 as I now found out. Other drivers provide other buffers and thus I can't just swab32() bytes, I have to make sure buffersizes are a multiple of 4, first which means to kmalloc()/kfree() memory to compensate this, which seems impractical, too :( This seems to be the reason why my patch was not working as expected. > (2) The data structures that usb_fill_control_urb and > usb_fill_bulk_urb create are pre-defined and well documented. > In particular, the byte order is fixed and should not be > changed. Yes, but this controller is really swab32()ing _all_ incoming and outgoing data (in hardware), so this is unfortunately neccessary I fear. Thanks, Andre' ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ linux-usb-devel@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
