On Sad, 2004-06-12 at 19:33, Margit Schubert-While wrote: > Now the curiousity; if we use a pointer to the data area as returned > from request_firmware, it doesn't work. If, however, we use the stack > (or a kmalloc'ed area) and copy over and pass the stack (or km'ed area) > address, then it works. > Only thing I could find is that request_firmware allocates the data area > using vmalloc. Why is this a problem ?
vmalloc is scatter gather virtual addressed data. It isnt DMAable. kmalloc space is linear and DMAable generally as (on some platforms only) is the stack. ------------------------------------------------------- This SF.Net email is sponsored by the new InstallShield X. >From Windows to Linux, servers to mobile, InstallShield X is the one installation-authoring solution that does it all. Learn more and evaluate today! http://www.installshield.com/Dev2Dev/0504 _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel
