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| author | Max Dmitrichenko <dmitrmax@gmail.com> | 2008-11-02 00:34:10 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2008-12-13 15:29:13 -0800 |
| commit | 867d011598fd1fec105752ecf09927fb444c5d9f (patch) | |
| tree | 374bec1db764e993a6b8ef5ba13f870ca35a7279 /include/linux/kernelcapi.h | |
| parent | 8067dfc2222e797ff8c6a3713d4ac5559d25ab1e (diff) | |
sparc64: Fix PCI resource mapping on sparc64
[ Upstream commit 145e1c0023585e0e8f6df22316308ec61c5066b2 ]
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'include/linux/kernelcapi.h')
0 files changed, 0 insertions, 0 deletions