tree 620a1fd9938abb10abfb0dde236a6e29026ab4ab
parent a1995a6599044076e2e13512ffbcecc49865e63e
author Max Dmitrichenko <dmitrmax@gmail.com> 1225611250 -0700
committer David S. Miller <davem@davemloft.net> 1225611250 -0700

sparc64: Fix PCI resource mapping on sparc64

There is a problem discovered in recent versions of ATI Mach64 driver
in X.org on sparc64 architecture. In short, the driver fails to mmap
MMIO aperture (PCI resource #2).

I've found that kernel's __pci_mmap_make_offset() returns EINVAL. It
checks whether user attempts to mmap more than the resource length,
which is 0x1000 bytes in our case. But PAGE_SIZE on SPARC64 is 0x2000
and this is what actually is being mmaped. So __pci_mmap_make_offset()
failed for this PCI resource.

Signed-off-by: Max Dmitrichenko <dmitrmax@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>