Re: [PATCH] iuu_phoenix new driver proposal for review and comments
Pete Zaitcev <[email protected]>
| Newsgroups | gmane.linux.usb.devel |
|---|---|
| Organization | Red Hat, Inc. |
| Message-ID | <[email protected]> |
On Wed, 18 Jul 2007 20:58:45 +0200, Oliver Neukum <[email protected]> wrote: > Am Mittwoch 18 Juli 2007 schrieb eczema: > > +struct iuu_buffers { > > + u8 buf[256]; > > + u8 finalbuf[256]; > > + u8 dbgbuf[512]; > > + u8 len; > > +}; > > + > > Is that safe? Kmalloc will give out chunks of memory safe for DMA, but will > they be aligned? Yes, they are aligned for the longest integral type a system possesses, although there may be issues. They are NOT aligned for the next power of two though. It only happens as long as SLAB debugging is not enabled. If you want alignment to 256, either grab pages or realign by hand like ymfpci did. -- Pete ------------------------------------------------------------------------- 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