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| author | Max Dmitrichenko <dmitrmax@gmail.com> | 2008-11-02 00:34:10 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2008-11-02 00:34:10 -0700 |
| commit | 5769907ade8dda7002b304c03ef9e4ee5c1e0821 (patch) | |
| tree | 620a1fd9938abb10abfb0dde236a6e29026ab4ab /Documentation/sgi-visws.txt | |
| parent | a1995a6599044076e2e13512ffbcecc49865e63e (diff) | |
| download | linux-3.10-5769907ade8dda7002b304c03ef9e4ee5c1e0821.tar.gz linux-3.10-5769907ade8dda7002b304c03ef9e4ee5c1e0821.tar.bz2 linux-3.10-5769907ade8dda7002b304c03ef9e4ee5c1e0821.zip | |
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>
Diffstat (limited to 'Documentation/sgi-visws.txt')
0 files changed, 0 insertions, 0 deletions