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authorTony Lindgren <tony@atomide.com>2013-06-07 12:12:25 -0400
committerTony Lindgren <tony@atomide.com>2013-06-07 12:12:25 -0400
commitbea6412a994a8f49d81bc103907563ab9f94c371 (patch)
tree93afcafccce0f149d4221ec4bb6156dcdafdb0e5 /arch/powerpc/kernel/pci-common.c
parent82c5cde1c4b01a62c9a19c9118b4b434c333ce86 (diff)
parent49006bfd31f728a0dfdef6ef41635f0e6c546155 (diff)
Merge branch 'am33xx' into omap-for-v3.11/cleanup
Diffstat (limited to 'arch/powerpc/kernel/pci-common.c')
-rw-r--r--arch/powerpc/kernel/pci-common.c14
1 files changed, 1 insertions, 13 deletions
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index e9acf50dd5b2..7f2273cc3c7d 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -657,15 +657,6 @@ void pci_resource_to_user(const struct pci_dev *dev, int bar,
657 * ranges. However, some machines (thanks Apple !) tend to split their 657 * ranges. However, some machines (thanks Apple !) tend to split their
658 * space into lots of small contiguous ranges. So we have to coalesce. 658 * space into lots of small contiguous ranges. So we have to coalesce.
659 * 659 *
660 * - We can only cope with all memory ranges having the same offset
661 * between CPU addresses and PCI addresses. Unfortunately, some bridges
662 * are setup for a large 1:1 mapping along with a small "window" which
663 * maps PCI address 0 to some arbitrary high address of the CPU space in
664 * order to give access to the ISA memory hole.
665 * The way out of here that I've chosen for now is to always set the
666 * offset based on the first resource found, then override it if we
667 * have a different offset and the previous was set by an ISA hole.
668 *
669 * - Some busses have IO space not starting at 0, which causes trouble with 660 * - Some busses have IO space not starting at 0, which causes trouble with
670 * the way we do our IO resource renumbering. The code somewhat deals with 661 * the way we do our IO resource renumbering. The code somewhat deals with
671 * it for 64 bits but I would expect problems on 32 bits. 662 * it for 64 bits but I would expect problems on 32 bits.
@@ -680,10 +671,9 @@ void pci_process_bridge_OF_ranges(struct pci_controller *hose,
680 int rlen; 671 int rlen;
681 int pna = of_n_addr_cells(dev); 672 int pna = of_n_addr_cells(dev);
682 int np = pna + 5; 673 int np = pna + 5;
683 int memno = 0, isa_hole = -1; 674 int memno = 0;
684 u32 pci_space; 675 u32 pci_space;
685 unsigned long long pci_addr, cpu_addr, pci_next, cpu_next, size; 676 unsigned long long pci_addr, cpu_addr, pci_next, cpu_next, size;
686 unsigned long long isa_mb = 0;
687 struct resource *res; 677 struct resource *res;
688 678
689 printk(KERN_INFO "PCI host bridge %s %s ranges:\n", 679 printk(KERN_INFO "PCI host bridge %s %s ranges:\n",
@@ -777,8 +767,6 @@ void pci_process_bridge_OF_ranges(struct pci_controller *hose,
777 } 767 }
778 /* Handles ISA memory hole space here */ 768 /* Handles ISA memory hole space here */
779 if (pci_addr == 0) { 769 if (pci_addr == 0) {
780 isa_mb = cpu_addr;
781 isa_hole = memno;
782 if (primary || isa_mem_base == 0) 770 if (primary || isa_mem_base == 0)
783 isa_mem_base = cpu_addr; 771 isa_mem_base = cpu_addr;
784 hose->isa_mem_phys = cpu_addr; 772 hose->isa_mem_phys = cpu_addr;