Re: patch to shift memory allocations to usb_alloc_urb()
David Brownell <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
On Saturday 30 June 2007, Oliver Neukum wrote: > Am Samstag, 30. Juni 2007 schrieb Alan Stern: > > Also, do you intend to set URB_FREE_BUFFER and allocate the transfer > > buffer if and only if max_length > 0? > > Without an explicit request? No. Good ... and don't encourage drivers to allocate a buffers like that, it'd bias everything to doing a memcpy() of the data rather than getting as close as possible to a zero-copy design. ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ [email protected] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel