Ralf Baechle wrote:
On Tue, Aug 07, 2007 at 11:01:57PM +0900, Atsushi Nemoto wrote:
On Tue, 7 Aug 2007 10:18:04 +0400, "Dajie Tan" <jiankemeng@xxxxxxxxx> wrote:
static inline unsigned long virt_to_phys(volatile const void *address)
{
- return (unsigned long)address - PAGE_OFFSET + PHYS_OFFSET;
+ return ((unsigned long)address & 0x1fffffff) + PHYS_OFFSET;
}
This makes virt_to_phys() a bit slower, and more importantly, breaks
64-bit kernel.
It's ALSA that is doing funny things here so there is no point in fixing
the arch code to work for ALSA.
Ralf
arm has made a dma_mmap_coherent, but I don't quite understand the code
and I am not sure the situation is the same.
Tian
