Re: New USB stack on FreeBSD w/Linux emulation layer coming
Alan Stern <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Message-ID | <[email protected]> |
On Tue, 22 May 2007, Laurent Pinchart wrote: > The usb_buffer_alloc name is misleading. Many USB driver developers believe it > is a generic purpose buffer allocator. > > I'd like to change usb_buffer_alloc to make it a general purpose allocator. A > parameter would tell the function to just allocate memory (default behaviour) > or to allocate a DMA coherent mapping as well. We could even pass the URB > pointer to the function to set the URB_TRANSFER_NO_DMA_MAP automatically > (although usb_buffer_alloc can be used to allocate the setup buffer, so the > API might have to be a little different). It would be simpler and less objectionable to just change the name of the routine. If it were called usb_alloc_coherent_DMA_buffer() then people wouldn't be tempted to think it was a general-purpose allocator. Alan Stern ------------------------------------------------------------------------- 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