2 messages, 2 authors, 2003-05-09 · open the first message on its own page
From: Curtis, Allen <hidden>
Date: 2003-05-09 18:07:44
I noticed in pci.h that pci_unmap_single() is a null function. (essentially does nothing) Shouldn't is call consistent_sync() so that flush_dcache_range() is called? ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
From: Roland Dreier <hidden>
Date: 2003-05-09 18:28:12
Allen> I noticed in pci.h that pci_unmap_single() is a null
Allen> function. (essentially does nothing) Shouldn't is call
Allen> consistent_sync() so that flush_dcache_range() is called?
No, the cache invalidate or flush has to happen when pci_map_single()
is used. There's nothing to do after the DMA is done (which is when
pci_unmap_single() gets called).
- Roland
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/