lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[PATCH] PCI: fix-pci-mmap-on-ppc-and-ppc64.patch

Browse Source 
This is an updated version of Ben's fix-pci-mmap-on-ppc-and-ppc64.patch
which is in 2.6.12-rc4-mm1.

It fixes the patch to work on PPC iSeries, removes some debug printks
at Ben's request, and incorporates your
fix-pci-mmap-on-ppc-and-ppc64-fix.patch also.

Originally from Benjamin Herrenschmidt <benh@kernel.crashing.org>

This patch was discussed at length on linux-pci and so far, the last
iteration of it didn't raise any comment.  It's effect is a nop on
architecture that don't define the new pci_resource_to_user() callback
anyway.  It allows architecture like ppc who put weird things inside of
PCI resource structures to convert to some different value for user
visible ones.  It also fixes mmap'ing of IO space on those archs.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
This commit is contained in:
Michael Ellerman
2005-05-13 17:44:10 +10:00
committed by Greg Kroah-Hartman
parent a0d399a808
commit 2311b1f2bb
7 changed files with 97 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
include/linux/pci.h
View File

@ -1020,6 +1020,20 @@ static inline char *pci_name(struct pci_dev *pdev)
#define pci_pretty_name(dev) ""
#endif
/* Some archs don't want to expose struct resource to userland as-is
* in sysfs and /proc
*/
#ifndef HAVE_ARCH_PCI_RESOURCE_TO_USER
static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc, u64 *start, u64 *end)
{
*start = rsrc->start;
*end = rsrc->end;
}
#endif /* HAVE_ARCH_PCI_RESOURCE_TO_USER */
/*
* The world is not perfect and supplies us with broken PCI devices.
* For at least a part of these bugs we need a work-around, so both